Patent Document

CROSS REFERENCE TO RELATED APPLICATION 
     This application is a continuation-in-part application of U.S. patent application Ser. No. 12/476,952 filed on Jun. 2, 2009 and entitled “A Field Emission System and Method”, which is a continuation-in-part application of U.S. patent application Ser. No. 12/322,561 filed on Feb. 4, 2009 and entitled “A System and Method for Producing an Electric Pulse”, which is a continuation-in-part application of U.S. patent application Ser. No. 12/358,423 filed on Jan. 23, 2009 and entitled “A Field Emission System and Method”, which is a continuation-in-part of U.S. patent application Ser. No. 12/123,718 filed on May 20, 2008 and entitled “A Field Emission System and Method”. The contents of these four documents are hereby incorporated herein by reference. 
    
    
     TECHNICAL FIELD 
     The present invention is related to a light that uses correlated magnets that enable a person to easily secure and remove a sealed portion of the light permitting access to the interior of the light. Some examples of such a light include scuba lights and other under water lights, work lights, stage lights, shop lights, flashlights and other types of lights where it is desirable to seal and isolate the interior of the light from the surrounding environment or to permit access to the interior of the light such as for changing the light element, light assembly and power source. The present invention is demonstrated using underwater or scuba lights. 
     DESCRIPTION OF RELATED ART 
     Lights are utilized in numerous applications by a multitude of personnel. One specific application is underwater use where the interior of the light needs to be secured and sealed to prevent water from entering the interior of the light. Whether integrated into a recovery diver&#39;s helmet or as a standalone unit, recreational, professional and military divers utilize underwater lights. Underwater lights are designed to be waterproof and to provide access to the interior of the light, such as by having at least one end that is releasably secured and sealable to the main portion of the light in order to provide a user access to the interior of the light to facilitate the changing of the power source, such as batteries, and the light element. 
     During use, underwater lights are subjected to harsh environments that include extreme pressures, temperatures and other types of physical abuse. It is imperative that the mechanism facilitating the seal on the releasably secured portion be able to endure the environmental challenges and maintain the seal in order to prevent water from propagating into the light. Current technologies for releasably securing and sealing an end or access lid of the light utilize mating threads so the user can screw and unscrew the cap onto the body of the light. One problem with threaded ends occurs if the cap is not screwed on tight enough. This can prevent the creation of the proper watertight seal. Additionally, users can easily cross-thread the cap also resulting in an improper seal and thereby permitting leaking to occur which often renders the light inoperable. The threads have also been shown to loosen when exposed to different temperatures and physical abuse during underwater use. 
     Because the caps are screwed on, many lights are configured such that a spring is integrated into the releasably secured end. The spring functions to provide the electrical connection between the batteries and the light bulb and further to keep the batteries from moving within the body of the light. The spring&#39;s compression factor has been shown to create problems. First, if the spring&#39;s compression factor is too much it can create difficulties in properly sealing and securing the end of the light resulting in a poor seal or cross-threaded connection. Second, utilizing threaded connections to secure an end or access lid of the light, over time, can reduce the spring&#39;s compression, which can result in the loss of the necessary electrical connection between the battery and the light bulb. 
     Accordingly, there has been a need for a new device and method for releasably securing and sealing an end or access lid to a light which addresses the aforementioned shortcomings and other shortcomings associated with lights, lights, more specifically but not by way of limitation, underwater lights. 
     SUMMARY 
     In one aspect, the present invention provides a light, more specifically but not by way of limitation an underwater light, that includes at least a first portion that is designed to be releasably sealed and secured to a second portion. The first portion having integrated therein a first field emission structure and the second portion having a second field emission structure, where the first field emission structure interacts with the second field emission structure, wherein each of the first and second field emission structures comprise an array of field emission sources each having positions and polarities relating to a desired spatial force function that corresponds to a relative alignment of the first and second field emission structures within a field domain. The releasable portion of the light can be releasably secured and sealed to the second portion of the light when the first and second field emission structures are adjacent one another and have a certain alignment with respect to one another. The releasable portion of the light can be released from the second portion when the first and second field emission structures are manipulated out of alignment with respect to one another. This is possible because each field emission source of each array of field emission sources has a corresponding field emission amplitude and vector direction determined in accordance with the desired spatial force function, wherein a separation distance between the first and second field emission structures and the relative alignment of the first and second field emission structures creates a spatial force in accordance the desired spatial force function. And, the field domain corresponds to first field emissions from the array of first field emission sources of the first field emission structure interacting with second field emissions from the array of second field emission sources of the second field emission structure. 
     In another aspect, the present invention provides a method for using an underwater light that includes at least the steps of: (a) releasing an end or lid of the light from the body of the light where the end or lid has integrally secured thereon a first field emission structure and wherein the body of the light has integrally mounted thereon a corresponding second field emission structure, the end or lid of the light is released by rotating the first field emission structure and the second field emission structure with respect to one another; and (b) accessing at least a portion of an internal cavity of the light for the purpose maintenance or replacement of a part disposed therein and (c) securing and sealing the end or lid of the light to the body, such that the first field emission structure integrally mounted on the end or lid is adjacent to a second field emission structure integrally mounted on the body of the light, where the end or lid is releasably secured to the body when the first and second field emission structures are located adjacent one another and have a certain alignment with respect to one another, and where each of the first and second field emission structures comprise an array of field emission sources each having positions and polarities relating to a desired spatial force function that corresponds to a relative alignment of the first and second field emission structures within a field domain. 
     Additional aspects of the invention will be set forth, in part, in the detailed description, figures and any claims which follow, and in part will be derived from the detailed description, or can be learned by practice of the invention. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as disclosed. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       A more complete understanding of the present invention may be obtained by reference to the following detailed description when taken in conjunction with the accompanying drawings wherein: 
         FIGS. 1-9  are various diagrams used to help explain different concepts about correlated magnetic technology, which can be utilized in an embodiment of the present invention; 
         FIG. 10A  is a side view of an embodiment of the present invention;  FIG. 10B  is side exploded view of an embodiment of the present invention as similarly shown in  FIG. 10A ; 
         FIG. 11  is a side exploded view of an alternative embodiment of the present invention as similarly shown in  FIGS. 10A and 10B ; 
         FIGS. 12A and 12B  are perspective views of other embodiments of the present invention; 
         FIGS. 13A and 13B  are perspective views of still other embodiments of the present invention; 
         FIGS. 14A and 14B  are partially exploded perspective views of other embodiments of the present invention; 
         FIGS. 15A-15I  are several diagrams that illustrate a portion of the light which are used to show how an exemplary first magnetic field emission structure integrally secured to an end or lid of the light and its mirror image second magnetic field emission structure (integrally secured to the body of the light) can be aligned or misaligned relative to each other to enable one to secure or remove the end or lid from the body of the light in accordance with an embodiment of the present invention; and 
         FIGS. 16A-16C  illustrated several diagrams of an exemplary release mechanism that can be incorporated within the lights in accordance with the embodiments of the present invention. 
     
    
    
     DETAILED DESCRIPTION 
     The present invention includes a light which utilizes correlated magnetic technology in place of traditional mechanical fasteners to releasably secure and seal an end or an access lid to allow a user to access at least a portion of the interior of the light to perform maintenance such as but not limited to replacing a light bulb or changing a power source. It is further contemplated within the scope of the present invention that the light also utilizes correlated magnetic technology to be releasably secured to a variety of objects such as but not limited to a scuba dive harness, scuba belt, a storage wall, or rack. The light utilizes correlated magnetic technology and is a significant improvement over a conventional light which employ threads, clamps, rings or other known fastening devices to enable the connection and sealing of an end or lid to the body of the light or enables a light to be releasably secured to an object (e.g., scuba dive harness, storage rack). This significant improvement over the state-of-art is attributable, in part, to the use of an emerging, revolutionary technology that is called correlated magnetics. 
     Correlated magnetics was first fully described and enabled in the co-assigned U.S. patent application Ser. No. 12/123,718 filed on May 20, 2008 and entitled “A Field Emission System and Method”. The contents of this document are hereby incorporated herein by reference. A second generation of a correlated magnetic technology is described and enabled in the co-assigned U.S. patent application Ser. No. 12/358,423 filed on Jan. 23, 2009 and entitled “A Field Emission System and Method”. The contents of this document are hereby incorporated herein by reference. A third generation of a correlated magnetic technology is described and enabled in the co-assigned U.S. patent application Ser. No. 12/476,952 tiled on Jun. 2, 2009 and entitled “A Field Emission System and Method”. The contents of this document are hereby incorporated herein by reference. Correlated inductance technology, which is related to correlated magnetics technology, is described and enabled in the co-assigned U.S. patent application Ser. No. 12/322,561 filed on Feb. 4, 2009 and entitled “A System and Method for Producing and Electric Pulse”. The contents of this document are hereby incorporated by reference. A brief discussion about correlated magnetics is provided first before a detailed discussion is provided about the correlated magnetic light of the present invention. 
     Correlated Magnetics Technology 
     This section is provided to introduce the reader to correlated magnetic technology. This section includes subsections relating to basic magnets, correlated magnets, and correlated electromagnetics. It should be understood that this section is provided to assist the reader with understanding the present invention, and should not be used to limit the scope of the present invention. 
     A. Magnets 
     A magnet is a material or object that produces a magnetic field which is a vector field that has a direction and a magnitude (also called strength). Referring to  FIG. 1 , there is illustrated an exemplary magnet  100  which has a South pole  102  and a North pole  104  and magnetic field vectors  106  that represent the direction and magnitude of the magnet&#39;s moment. The magnet&#39;s moment is a vector that characterizes the overall magnetic properties of the magnet  100 . For a bar magnet, the direction of the magnetic moment points from the South pole  102  to the North pole  104 . The North and South poles  104  and  102  are also referred to herein as positive (+) and negative (−) poles, respectively. 
     Referring to  FIG. 2A , there is a diagram that depicts two magnets  100   a  and  100   b  aligned such that their polarities are opposite in direction resulting in a repelling spatial force  200  which causes the two magnets  100   a  and  100   b  to repel each other. In contrast,  FIG. 2B  is a diagram that depicts two magnets  100   a  and  100   b  aligned such that their polarities are in the same direction resulting in an attracting spatial force  202  which causes the two magnets  100   a  and  100   b  to attract each other. In  FIG. 2B , the magnets  100   a  and  100   b  are shown as being aligned with one another but they can also be partially aligned with one another where they could still “stick” to each other and maintain their positions relative to each other.  FIG. 2C  is a diagram that illustrates how magnets  100   a ,  100   b  and  100   c  will naturally stack on one another such that their poles alternate. 
     B. Correlated Magnets 
     Correlated magnets can be created in a wide variety of ways depending on the particular application as described in the aforementioned U.S. patent application Ser. Nos. 12/123,718, 12/358,432, and 12/476,952 by using a unique combination of magnet arrays (referred to herein as magnetic field emission sources), correlation theory (commonly associated with probability theory and statistics) and coding theory (commonly associated with communication systems). A brief discussion is provided next to explain how these widely diverse technologies are used in a unique and novel way to create correlated magnets. 
     Basically, correlated magnets are made from a combination of magnetic (or electric) field emission sources which have been configured in accordance with a pre-selected code having desirable correlation properties. Thus, when a magnetic field emission structure is brought into alignment with a complementary, or mirror image, magnetic field emission structure the various magnetic field emission sources will all align causing a peak spatial attraction force to be produced, while the misalignment of the magnetic field emission structures cause the various magnetic field emission sources to substantially cancel each other out in a manner that is a function of the particular code used to design the two magnetic field emission structures. In contrast, when a magnetic field emission structure is brought into alignment with a duplicate magnetic field emission structure then the various magnetic field emission sources all align causing a peak spatial repelling force to be produced, while the misalignment of the magnetic field emission structures causes the various magnetic field emission sources to substantially cancel each other out in a manner that is a function of the particular code used to design the two magnetic field emission structures. 
     The aforementioned spatial forces (attraction, repelling) have a magnitude that is a function of the relative alignment of two magnetic field emission structures and their corresponding spatial force (or correlation) function, the spacing (or distance) between the two magnetic field emission structures, and the magnetic field strengths and polarities of the various sources making up the two magnetic field emission structures. The spatial force functions can be used to achieve precision alignment and precision positioning not possible with basic magnets. Moreover, the spatial force functions can enable the precise control of magnetic fields and associated spatial forces thereby enabling new forms of attachment devices for attaching objects with precise alignment and new systems and methods for controlling precision movement of objects. An additional unique characteristic associated with correlated magnets relates to the situation where the various magnetic field sources making-up two magnetic field emission structures can effectively cancel out each other when they are brought out of alignment which is described herein as a release force. This release force is a direct result of the particular correlation coding used to configure the magnetic field emission structures. 
     A person skilled in the art of coding theory will recognize that there are many different types of codes that have different correlation properties which have been used in communications for channelization purposes, energy spreading, modulation, and other purposes. Many of the basic characteristics of such codes make them applicable for use in producing the magnetic field emission structures described herein. For example, Barker codes are known for their autocorrelation properties and can be used to help configure correlated magnets. Although, a Barker code is used in an example below with respect to  FIGS. 3A-3B , other forms of codes which may or may not be well known in the art are also applicable to correlated magnets because of their autocorrelation, cross-correlation, or other properties including, for example, Gold codes, Kasami sequences, hyperbolic congruential codes, quadratic congruential codes, linear congruential codes, Welch-Costas array codes, Golomb-Costas array codes, pseudorandom codes, chaotic codes, Optimal Golomb Ruler codes, deterministic codes, designed codes, one dimensional codes, two dimensional codes, three dimensional codes, or four dimensional codes, combinations thereof, and so forth. 
     Referring to  FIG. 3A , there are diagrams used to explain how a Barker length 7 code  300  can be used to determine polarities and positions of magnets  302   a ,  302   b  . . .  302   g  making up a first magnetic field emission structure  304 . Each magnet  302   a ,  302   b  . . .  302   g  has the same or substantially the same magnetic field strength (or amplitude), which for the sake of this example is provided as a unit of 1 (where A=Attract, R=Repel, A=−R, A=1, R=−1). A second magnetic field emission structure  306  (including magnets  308   a ,  308   b  . . .  308   g ) that is identical to the first magnetic field emission structure  304  is shown in 13 different alignments  310 - 1  through  310 - 13  relative to the first magnetic field emission structure  304 . For each relative alignment, the number of magnets that repel plus the number of magnets that attract is calculated, where each alignment has a spatial force in accordance with a spatial force function based upon the correlation function and magnetic field strengths of the magnets  302   a ,  302   b  . . .  302   g  and  308   a ,  308   b  . . .  308   g . With the specific Barker code used, the spatial force varies from −1 to 7, where the peak occurs when the two magnetic field emission structures  304  and  306  are aligned which occurs when their respective codes are aligned. The off peak spatial force, referred to as a side lobe force, varies from 0 to −1. As such, the spatial force function causes the magnetic field emission structures  304  and  306  to generally repel each other unless they are aligned such that each of their magnets are correlated with a complementary magnet (i.e., a magnet&#39;s South pole aligns with another magnet&#39;s North pole, or vice versa). In other words, the two magnetic field emission structures  304  and  306  substantially correlate with one another when they are aligned to substantially mirror each other. 
     In  FIG. 3B , there is a plot that depicts the spatial force function of the two magnetic field emission structures  304  and  306  which results from the binary autocorrelation function of the Barker length 7 code  300 , where the values at each alignment position  1  through  13  correspond to the spatial force values that were calculated for the thirteen alignment positions  310 - 1  through  310 - 13  between the two magnetic field emission structures  304  and  306  depicted in  FIG. 3A . As the true autocorrelation function for correlated magnet field structures is repulsive, and most of the uses envisioned will have attractive correlation peaks, the usage of the term ‘autocorrelation’ herein will refer to complementary correlation unless otherwise stated. That is, the interacting faces of two such correlated magnetic field emission structures  304  and  306  will be complementary to (i.e., mirror images of) each other. This complementary autocorrelation relationship can be seen in  FIG. 3A  where the bottom face of the first magnetic field emission structure  304  having the pattern ‘S S S N N S N’ is shown interacting with the top face of the second magnetic field emission structure  306  having the pattern ‘N N N S S N S’, which is the minor image (pattern) of the bottom face of the first magnetic field emission structure  304 . 
     Referring to  FIG. 4A , there is a diagram of an array of 19 magnets  400  positioned in accordance with an exemplary code to produce an exemplary magnetic field emission structure  402  and another array of 19 magnets  404  which is used to produce a mirror image magnetic field emission structure  406 . In this example, the exemplary code was intended to produce the first magnetic field emission structure  402  to have a first stronger lock when aligned with its mirror image magnetic field emission structure  406  and a second weaker lock when it is rotated 90° relative to its mirror image magnetic field emission structure  406 .  FIG. 4B  depicts a spatial force function  408  of the magnetic field emission structure  402  interacting with its mirror image magnetic field emission structure  406  to produce the first stronger lock. As can be seen, the spatial force function  408  has a peak which occurs when the two magnetic field emission structures  402  and  406  are substantially aligned.  FIG. 4C  depicts a spatial force function  410  of the magnetic field emission structure  402  interacting with its minor magnetic field emission structure  406  after being rotated 90°. As can be seen, the spatial force function  410  has a smaller peak which occurs when the two magnetic field emission structures  402  and  406  are substantially aligned but one structure is rotated 90°. If the two magnetic field emission structures  402  and  406  are in other positions then they could be easily separated. 
     Referring to  FIG. 5 , there is a diagram depicting a correlating magnet structure  502  being wrapped back on itself on a cylinder  504  (or disc  504 , wheel  504 ) and a conveyor belt/tracked structure  506  having located thereon a mirror image correlating magnet structure  508 . In this case, the cylinder  504  can be turned clockwise or counter-clockwise by some force so as to roll along the conveyor belt/tracked structure  506 . The fixed magnetic field emission structures  502  and  508  provide a traction and gripping (i.e., holding) force as the cylinder  504  is turned by some other mechanism (e.g., a motor). The gripping force would remain substantially constant as the cylinder  504  moved down the conveyor belt/tracked structure  506  independent of friction or gravity and could therefore be used to move an object about a track that moved up a wall, across a ceiling, or in any other desired direction within the limits of the gravitational force (as a function of the weight of the object) overcoming the spatial force of the aligning magnetic field emission structures  502  and  508 . If desired, this cylinder  504  (or other rotary devices) can also be operated against other rotary correlating structures to provide a gear-like operation. Since the hold-down force equals the traction force, these gears can be loosely connected and still give positive, non-slipping rotational accuracy. Plus, the magnetic field emission structures  502  and  508  can have surfaces which are perfectly smooth and still provide positive, non-slip traction. In contrast to legacy friction-based wheels, the traction force provided by the magnetic field emission structures  502  and  508  is largely independent of the friction forces between the traction wheel and the traction surface and can be employed with low friction surfaces. Devices moving about based on magnetic traction can be operated independently of gravity for example in weightless conditions including space, underwater, vertical surfaces and even upside down. 
     Referring to  FIG. 6 , there is a diagram depicting an exemplary cylinder  602  having wrapped thereon a first magnetic field emission structure  604  with a code pattern  606  that is repeated six times around the outside of the cylinder  602 . Beneath the cylinder  602  is an object  608  having a curved surface with a slightly larger curvature than the cylinder  602  and having a second magnetic field emission structure  610  that is also coded using the code pattern  606 . Assume, the cylinder  602  is turned at a rotational rate of 1 rotation per second by shaft  612 . Thus, as the cylinder  602  turns, six times a second the first magnetic field emission structure  604  on the cylinder  602  aligns with the second magnetic field emission structure  610  on the object  608  causing the object  608  to be repelled (i.e., moved downward) by the peak spatial force function of the two magnetic field emission structures  604  and  610 . Similarly, had the second magnetic field emission structure  610  been coded using a code pattern that mirrored axle pattern  606 , then 6 times a second the first magnetic field emission structure  604  of the cylinder  602  would align with the second magnetic field emission structure  610  of the object  608  causing the object  608  to be attracted (i.e., moved upward) by the peak spatial force function of the two magnetic field emission structures  604  and  610 . Thus, the movement of the cylinder  602  and the corresponding first magnetic field emission structure  604  can be used to control the movement of the object  608  having its corresponding second magnetic field emission structure  610 . One skilled in the an will recognize that the cylinder  602  may be connected to a shaft  612  which may be turned as a result of wind turning a windmill, a water wheel or turbine, ocean wave movement, and other methods whereby movement of the object  608  can result from some source of energy scavenging. As such, correlated magnets enables the spatial forces between objects to be precisely controlled in accordance with their movement and also enables the movement of objects to be precisely controlled in accordance with such spatial forces. 
     In the above examples, the correlated magnets  304 ,  306 ,  402 ,  406 ,  502 ,  508 ,  604  and  610  overcome the normal ‘magnet orientation’ behavior with the aid of a holding mechanism such as an adhesive, a screw, a bolt &amp; nut, etc. . . . In other cases, magnets of the same magnetic field emission structure could be sparsely separated from other magnets (e.g., in a sparse array) such that the magnetic forces of the individual magnets do not substantially interact, in which case the polarity of individual magnets can be varied in accordance with a code without requiring a holding mechanism to prevent magnetic forces from ‘flipping’ a magnet. However, magnets are typically close enough to one another such that their magnetic forces would substantially interact to cause at least one of them to ‘flip’ so that their moment vectors align but these magnets can be made to remain in a desired orientation by use of a holding mechanism such as an adhesive, a screw, a bolt &amp; nut, etc. . . . As such, correlated magnets often utilize some sort of holding mechanism to form different magnetic field emission structures which can be used in a wide-variety of applications like, for example, a turning mechanism, a tool insertion slot, alignment marks, a latch mechanism, a pivot mechanism, a swivel mechanism, a lever, a drill head assembly, a hole cutting tool assembly, a machine press tool, a gripping apparatus, a slip ring mechanism, and a structural assembly. 
     C. Correlated Electromagnetics 
     Correlated magnets can entail the use of electromagnets which is a type of magnet in which the magnetic field is produced by the flow of an electric current. The polarity of the magnetic field is determined by the direction of the electric current and the magnetic field disappears when the current ceases. Following are a couple of examples in which arrays of electromagnets are used to produce a first magnetic field emission structure that is moved over time relative to a second magnetic field emission structure which is associated with an object thereby causing the object to move. 
     Referring to  FIG. 7 , there are several diagrams used to explain a 2-D correlated electromagnetics example in which there is a table  700  having a two-dimensional electromagnetic array  702  (first magnetic field emission structure  702 ) beneath its surface and a movement platform  704  having at least one table contact member  706 . In this example, the movement platform  704  is shown having four table contact members  706  each having a magnetic field emission structure  708  (second magnetic field emission structures  708 ) that would be attracted by the electromagnetic array  702 . Computerized control of the states of individual electromagnets of the electromagnet array  702  determines whether they are on or off and determines their polarity. A first example  710  depicts states of the electromagnetic array  702  configured to cause one of the table contact members  706  to attract to a subset  712   a  of the electromagnets within the magnetic field emission structure  702 . A second example  712  depicts different states of the electromagnetic array  702  configured to cause the one table contact member  706  to be attracted (i.e., move) to a different subset  712   b  of the electromagnets within the field emission structure  702 . Per the two examples, one skilled in the art can recognize that the table contact member(s)  706  can be moved about table  700  by varying the states of the electromagnets of the electromagnetic array  702 . 
     Referring to  FIG. 8 , there are several diagrams used to explain a 3-D correlated electromagnetics example where there is a first cylinder  802  which is slightly larger than a second cylinder  804  that is contained inside the first cylinder  802 . A magnetic field emission structure  806  is placed around the first cylinder  802  (or optionally around the second cylinder  804 ). An array of electromagnets (not shown) is associated with the second cylinder  804  (or optionally the first cylinder  802 ) and their states are controlled to create a moving minor image magnetic field emission structure to which the magnetic field emission structure  806  is attracted so as to cause the first cylinder  802  (or optionally the second cylinder  804 ) to rotate relative to the second cylinder  804  (or optionally the first cylinder  802 ). The magnetic field emission structures  808 ,  810 , and  812  produced by the electromagnetic array on the second cylinder  804  at time t=n, t=n−1, and t=n−2, show a pattern mirroring that of the magnetic field emission structure  806  around the first cylinder  802 . The pattern is shown moving downward in time so as to cause the first cylinder  802  to rotate counterclockwise. As such, the speed and direction of movement of the first cylinder  802  (or the second cylinder  804 ) can be controlled via state changes of the electromagnets making up the electromagnetic array. Also depicted in  FIG. 8  there is an electromagnetic array  814  that corresponds to a track that can be placed on a surface such that a moving mirror image magnetic field emission structure can be used to move the first cylinder  802  backward or forward on the track using the same code shift approach shown with magnetic field emission structures  808 ,  810 , and  812  (compare to  FIG. 5 ). 
     Referring to  FIG. 9 , there is illustrated an exemplary valve mechanism  900  based upon a sphere  902  (having a magnetic field emission structure  904  wrapped thereon) which is located in a cylinder  906  (having an electromagnetic field emission structure  908  located thereon). In this example, the electromagnetic field emission structure  908  can be varied to move the sphere  902  upward or downward in the cylinder  906  which has a first opening  910  with a circumference less than or equal to that of the sphere  902  and a second opening  912  having a circumference greater than the sphere  902 . This configuration is desirable since one can control the movement of the sphere  902  within the cylinder  906  to control the flow rate of a gas or liquid through the valve mechanism  900 . Similarly, the valve mechanism  900  can be used as a pressure control valve. Furthermore, the ability to move an object within another object having a decreasing size enables various types of sealing mechanisms that can be used for the sealing of windows, refrigerators, freezers, food storage containers, boat hatches, submarine hatches, etc., where the amount of sealing force can be precisely controlled. One skilled in the art will recognize that many different types of seal mechanisms that include gaskets, o-rings, and the like can be employed with the use of the correlated magnets. Plus, one skilled in the art will recognize that the magnetic field emission structures can have an array of sources including, for example, a permanent magnet, an electromagnet, an electret, a magnetized ferromagnetic material, a portion of a magnetized ferromagnetic material, a soft magnetic material, or a superconductive magnetic material, some combination thereof, and so forth. 
     Correlated Magnetic Light 
     Referring to  FIGS. 10A-14B , there are disclosed exemplary lights  1000 ,  1200 ,  1300  and  1400  and methods for using the four exemplary lights in accordance with the present invention. Although the exemplary embodiments are described as being configured as underwater or scuba lights, it should be understood that a similar correlated magnetic light can be configured for a wide-variety of applications including, for example, flashlights, studio lights, stage lights, headlight and taillight assemblies, swimming pool lights, outdoor lighting, flood lights, and any type of light that is manufactured to have an interior portion sealed from the surrounding environment, or manufactured with a removable portion for providing access to an interior portion of the light. Accordingly, the embodiments of correlated magnetic lights disclosed herein should not be construed in a limited manner. 
     Referring in particular to  FIGS. 10A and 10B  is illustrated a light  1000 . The light  1000  is a conventional style flashlight that comprises a body  1010  that is generally cylindrical in shape and is constructed from a suitable durable material. The body  1010  further includes a lens cap  1020  and a battery cap  1030 . When the light  1000  is assembled, the lens cap  1020  houses at least a portion of the light assembly  1054  and generally has a lens covering the end, while the battery cap  1030  provides quick access to the interior of the body  1010  for the insertion and removal of batteries from the light  1000 . 
     The lens cap  1020  and the battery cap  1030  are configured to be releasably secured and sealed to the body  1010  to allow a user to access at least a portion of the interior of the body  1010 . The lens cap  1020  and the battery cap  1030  are configured to overlap a corresponding adjacent portion of the body  1010  when assembled. The light  1000  is illustrated having the lens cap  1020  and the battery cap  1030  that are configured to be releasably secured to the body  1010 , however, it is contemplated to be within the scope of the present invention that the light  1000  could be made to have only one end that is configured to be releasably secured and sealed to the body  1010 . 
     Additionally, the light  1000  could have integrated thereon an access lid releasably secured to facilitate access to at least a portion of the interior of the light  1000  in place of and/or in conjunction with a releasably secured end. Those skilled in the art should also recognize that the body  1010  while illustrated herein as being generally cylindrical in shape could be manufactured in a variety of different shapes and sizes. 
     Integrally mounted around the perimeter of the lens cap  1020  and the battery cap  1030  are first magnetic field emission structures  1040 . Integrally mounted around the perimeter of the body  1010  at either end are second magnetic field emission structures  1050 . Each of the first magnetic field emission structures  1040  include an array of field emission sources  1045  and each of the second magnetic field emission structures  1050  include an array of field emission sources  1055 . The first and second magnetic field emissions structures  1040  and  1050  both positions and polarities in accordance with the same code but are a mirror image of one another (see  FIGS. 4A-4C  AND  15 A- 15 I), such that when first and second magnetic field emission structures  1040  and  1050  are located in certain proximity and have a certain alignment with respect to one another, the securing and sealing of the lens cap  1020  to the body  1010  and the battery cap  1030  to the body  1010  is accomplished. Depending on materials used, manufacturing reasons, or other reasons, first and second magnetic field emission structures  1040  and  1050  may be integrally mounted on an inside surface, an outside surface, and/or within a material(s) used to produce the light. Therefore, such structures may not actually be visible to the user of the light as illustrated herein. 
     The removal of the lens cap  1020  or the battery cap  1030  from the body  1010  is accomplished by separating the attached first and second magnetic field emission structures  1040  and  1050 . In particular, the lens cap  1020  and the battery cap  1030  can be released from the body  1010  when the lens cap  1020  and the battery cap  1030  are rotated in relation to body  1010  which will in turn, misalign the corresponding first and second magnetic field emission structures  1040  and  1050 . If desired, a release mechanism  1620  can be used to turn the first magnetic field emission structure  1040  with respect to the second magnetic field emission structure  1050  so as to release the lens cap  1020  and the battery cap  1030  from the body  1010  (see  FIGS. 15A-15I  and  16 A- 16 C). Alternatively, the first and second magnetic field structures  1040  and  1050  can be designed such that the lens cap  1020  and the battery cap  1030  can be detached from the body  1010  by pulling them apart without rotation. However, it is preferable that a torque force produced when rotating the lens cap  1020  and the battery cap  1030  be required to overcome the attractive force of the attached magnetic field structures, where the attractive force is sufficiently strong to make it difficult to merely pull the lens cap  1020  and the battery cap  1030  to remove them. Basically, use of cylindrical shapes allows for their rotation thereby allowing for stronger sealing forces due to the ability to take advantage of the release characteristics described in relation to  FIGS. 15A-15I . But, cylindrical shapes and/or rotation are not required to practice the invention. 
     The attachment and de-attachment of the first and second magnetic field emission structures  1040  and  1050  is possible because of the array of field emission sources  1045  and  1055  respectively. Field emission sources  1045  and  1055  each have positions and polarities relating to a desired spatial force function that corresponds to a relative alignment of the first and second magnetic field emission structures  1040  and  1050  within a filed domain (see discussion about correlated magnet technology). 
     Generally, the magnetic field emission structures  1040 ,  1050  could be coded utilizing the field emission sources  1045  and  1055  such that they would only attach when a user places the lens cap  1020  and the battery cap  1030  in desired positions. Such Coding of the magnetic field emission structures  1040  and  1050  would therefore ensure the proper assembly of light  1000 . 
     It is contemplated to be within the scope of the present invention that the number and size of the first and second magnetic field emission structures  1040  and  1050  could vary depending on the intended use and design of light  1000   
     Still referring to  FIGS. 10A and 10B , the light  1000  further includes a light assembly  1054  comprising a light source  1070  and a spring  1060 . Subsequent the securing of the first end  1020  to the body  1010 , the spring compresses and functions to provide the operable electrical connection between a power source that is disposed within the body  1010  and the light source  1070 . It is further contemplated within the scope of the present invention that a spring  1060  could be replaced with any method suitable to provide an operable electrical connection between a power source disposed within the body  1010  and the light source  1070 . More specifically but not by way of limitation, the light  1000  could be manufactured such that the compression force created when utilizing the corresponding first and second magnetic field emission structures  1040  and  1050  would result in the operable electrical connection between the power source and the light source  1070 . Those skilled in the art should recognize that the light assembly  1054  could be manufactured from numerous different materials and formed in numerous different shapes to accomplish this objective. It is further contemplated within the scope of the present invention that the light source  1070  could be manufactured from numerous suitable known types of materials. More specifically but not by way of limitation, the light source  1070  could be an LED light or a halogen, xenon, fluorescent or an incandescent bulb. 
     Although this and the other embodiments are disclosed herein as having a single light source, it is contemplated that variable light sources, multiple light sources and different types of light sources could also be utilized. For example, the light source could include 3 LED lights, where the lights could be operated all together or in variable combinations to adjust the amount of light that is produced. It is further contemplated that the magnetic field emission structures could be integrated with the electrical operation of the light source, such that the particular mating or combination of the magnetic field emission structures would operate and control the light source. 
     Referring now to  FIG. 11 , there is illustrated an alternative embodiment of light  1000  as similarly illustrated in  FIGS. 10A and 10B . It is noted that the elements of light  1000  illustrated in  FIG. 11  that are the same as illustrated in  FIGS. 10A and 10B  are depicted with identical references numerals and are as described above. As depicted in  FIG. 11 , two-dimensional first magnetic field emission structures  1040   a  are integrally mounted around the inside perimeter of the lens cap  1020  and around the inside perimeter of the battery cap  1030 . Integrally mounted around the outside perimeter of the body  1010  at either end are the second magnetic field emission structures  1050   a , which are also two-dimensional structures. Each of the first magnetic field emission structures  1040   a  include an array of field emission sources  1045  and each of the second magnetic field emission structures  1050   a  include an array of field emission sources  1055  that are complementary to the array of field emission sources  1045  of the first magnetic field emission structure  1040   a . If desired, the first magnetic field structures  1040   a  could instead be mounted on the outside perimeter of the lens cap  1020  and around the outside perimeter of the battery cap  1030  and the second magnetic field emission structures  1050   a  could be mounted on the inside perimeter of the body  1010  at either end, or some other combination could be employed. Moreover, one dimensional magnetic field emission structures could be used and/or structures could be used that do not extend fully around a given perimeter (e.g., multiple structures could be used that are spaced about a given perimeter). Generally, one skilled in the art will recognize that many different combinations and configurations of first and magnetic field structures could be used to achieve desired attachment and release characteristics. 
     In the preferred embodiment depicted in  FIG. 11 , each of the first magnetic field emission structures  1040   a  and corresponding second field emission structures  1050   a  can both be coded in one singular encoded structure or in repeated coded sections, with first emission structures  1040   a  and second field emission structures  1050   a  being encoded with mirror images of one another. The coding is such that when the first and second magnetic field emission structures  1040   a  and  1050   a  are located in certain proximity and have a certain alignment with respect to one another, the securing and sealing of the lens cap  1020  to the body  1010  and the battery cap  1030  to the body  1010  is accomplished. Thus, if N repeated coded sections are employed than the securing and sealing of the lens cap  1020  to the body  1010  and the battery cap  1030  to the body  1010  can be accomplished at any of N different alignments. If N were 12, then securing and sealing of the lens cap  1020  or battery cap  1030  could correspond to twelve different 30 degree rotations around the body  1010  (much like a clock). 
     Subsequent the coupling of the lens cap  1020  to the body  1010  and the coupling of the battery cap  1030  to the body  1010 , each can be rotated with respect to the body  1010  to a position (or one of N positions) such that a peak spatial attraction force exists between the first magnetic field emission structure  1040   a  and the second magnetic field emission structure  1050   a  thereby securing each of the lens cap  1020  and the battery cap  1030  to the body  1010 . 
     Still referring to  FIG. 11 , the removal of the lens cap  1020  or the battery cap  1030  from the body  1010  is accomplished by rotating the lens cap  1020  with respect to the body  1010  or by rotating the battery cap  1030  with respect to the body  1010 . The rotation misaligns the corresponding first and second magnetic field emission structures  1040   a  and  1050   a  removing each from a position of peak spatial attraction force, thereby permitting the removal each of the lens cap  1020  and the battery cap  1030  from the body  1010 . 
     Referring now to  FIGS. 10A ,  10 B and  11 , it is contemplated that the light  1000  could be constructed such that an environmental seal exists between the lens cap  1020  and the body  1010 , as well as between the battery cap  1030  and the body  1010 , and thus isolating the interior of the light  1000  from its external environment. More specifically but not by way of limitation, the light  1000  could include an o-ring or gasket to provide a seal substantially resistant to external environments such as but not limited to water, acidic fog, smoke and numerous other environments that at least partially contain materials and matter that could be damaging to the internal components of the light  1000 . 
     Referring now to  FIG. 12A , an alternative embodiment of the present invention is shown that represents another configuration of an exemplary underwater light  1200  utilized by divers. The underwater light  1200  has one end  1240  that is releasably secured to the body  1270  and provides a watertight seal there between. The end  1240  overlaps the adjacent portion of the body  1270  when coupled thereto. Extending in a generally downward direction from the body  1270  and integrally mounted thereto is a handle  1260 . Mounted on the handle  1260  proximate the body  1270  is a switch  1230  for activating and deactivating the light  1200 . 
     The light  1200  includes first magnetic field emission structures  1210  integrally mounted about the perimeter of the end  1240  and corresponding second magnetic field emissions structures  1212  integrally mounted to the body  1270  as similarly described in reference to the light  1000  of  FIGS. 10A ,  10 B and  11 . As with the light  1000 , the first magnetic field emission structures  1210  and the corresponding second magnetic field emissions structures  1212  facilitate the securing of the end  1240  to the body  1270 . The two corresponding magnetic field emission structures each include an array of field emission sources such as field emission sources  1220  with each having positions and polarities relating to a desired spatial force function that corresponds to a relative alignment of the first magnetic field emission structure with the corresponding second magnetic field emission structure. The first and second magnetic field emissions structures both have the same code but are a mirror image of one another, such that when corresponding first magnetic field emission structures  1210  are located in certain proximity to the second magnetic field emission structures  1212  and have a certain alignment with respect to one another, the securing and sealing of the end  1240  to the body  1270  is accomplished. 
     The removal of the end  1240  from the body  1270  is accomplished by separating the attached first and second magnetic field emission structures. In particular, the end  1240  can be released from the body  1270  when the end  1240  is rotated in relation to the body  1270  which will in turn, misalign corresponding first and second magnetic field emission structures  1210  and  1212 . A release mechanism, such as release mechanism  1620 , could also be used to turn the first magnetic field emission structure  1210  with respect to the second magnetic field emission structure  1212  so as to release the end  1210  from the body  1270  (see  FIG. 16 ). 
     Generally, the first and second magnetic field emission structures could be coded utilizing the field emission sources such that a user can only place the end  1240  in select predetermined positions. Coding of the magnetic field emission structures in such a manner would therefore ensure the proper assembly of the light  1200 . 
     It is contemplated to be within the scope of the present invention that the number, size, and type of the first magnetic field emission structures and second magnetic field emission structures could be varied depending on the intended use and design of the light  1200 . 
     A third first magnetic field emission structure  1215  is integrally mounted on the body  1270 . The third first magnetic field emission structure  1215  functions to secure the light  1200  to an external object having a corresponding magnetic field emission structure. More specifically but not by way of limitation, the third magnetic field emission structure  1215  could be coded to be releasably secured to an object containing a fourth corresponding magnetic field emission structure such as but not limited to a storage shelf or rack, a side of a boat or car, a belt or a scuba harness. 
     Referring now to  FIG. 12B , there is illustrated an alternative embodiment of light  1200  as similarly illustrated in  FIG. 12A . It is noted that the elements of the light  1200  illustrated in  FIG. 12B  that are the same as illustrated in  FIG. 12A  are depicted with identical references numerals and are as described above. As depicted in  FIG. 12B , the light  1200  includes first magnetic field emission structures  1210   a  integrally mounted about the inside perimeter of end  1240  and corresponding second magnetic field emission structures  1212   a  integrally mounted about the outside perimeter of body  1270  (as similarly described in  FIG. 11 , elements  1040  and  1050 ). The first magnetic field emission structure  1210   a  and the corresponding second magnetic field emission structures  1212   a  each include an array of field emission sources. The first magnetic field emission structure  1210   a  and the corresponding second magnetic field emission structure  1212   a  can each be coded in one singular encoded structure or in coded sections, with the first field emission structure  1210   a  and the corresponding second magnetic field emission structure  1212   a  being encoded to be mirror images of one another. The coding is such that when the first magnetic field emission structure  1210   a  is located in certain proximity to the corresponding second magnetic field emission structure  1212   a  with certain alignment with respect to one another, the securing and sealing of the end  1240  to the body  1270  is accomplished. One skilled in the art will recognize that many different variations and combinations of complementary magnetic field emission structures can be employed to achieve desired attachment and release characteristics to include but not limited to those described in relation to  FIG. 11 . 
     Subsequent to the coupling of the end  1240  to the body  1270 , the end  1240  can be rotated with respect to the body  1270  to a position such that a peak spatial attraction force exists between the first magnetic field emission structure  1210   a  and the second magnetic field emission structure  1212   a , thereby securing the end  1240  to the body  1270 . 
     Still referring to  FIG. 12B , the removal of the end  1240  from the body  1270  is accomplished by rotating end  1240  with respect to body  1270 . The rotation misaligns the corresponding first magnetic field emission structure  1210   a  from the second magnetic field emission structure  1212   a  removing each from a position of peak spatial attraction force, thereby permitting the removal of the end  1240  from the body  1270 . 
     Referring now to  FIG. 13A , another embodiment of the present invention is shown that represents a configuration of an ecgonomically hand shaped light  1300  that is configured to mate with a glove  1370  worn by a diver. The light  1300  includes a body  1360  and a light element end  1350 , with the body  1360  configured to receive therein a power source, such as batteries, to power the light contained in the light element end  1350  when assembled. The light element end  1350  includes first magnetic field emission structures  1310  and  1320  which can be aligned to be coupled with second magnetic field emission structures  1312  and  1322  when the light  1300  is assembled. 
     The body  1360  includes a third magnetic field emission structure  1330  which is configured to be aligned and releasably connected to a corresponding magnetic field emission structure  1335  that is integrated with the diver glove  1370  thereby enabling a user wearing the glove  1370  to releasably secure the light  1300  thereto. Those skilled in the art should recognize that the third magnetic field emission structure  1330  could be used to releasably secure the light  1300  to a variety of additional objects having a corresponding magnetic field emission structure such as but not limited to a wall, shelf, rack, boat, car, belt or harness. It is contemplated within the scope of the present invention that the exemplary embodiment depicted in  FIG. 13A  could utilize numerous different amounts of magnetic field emission structures to facilitate the securing of the light element end  1350  to the body  1360 . Furthermore, it is contemplated within the scope of the present invention that the exemplary embodiment depicted in  FIG. 13A  could utilize correlated magnetic surfaces mounted on proximate edges  1361 ,  1362  to facilitate the securing of the end  1350  to the body  1360 . It is also contemplated that the exemplary embodiment depicted in  FIG. 13A  could have a different shape to include at least a portion of the light element end  1350  and the body  1360  having a cylindrical shape thereby allowing for rotation. 
     In this embodiment, the light  1300  is constructed such that an environmental seal exists between end  1350  and body  1360  thus isolating the interior of light  1300  from the external environment. More specifically but not by way of limitation, light  1300  could include an o-ring or gasket to provide a seal substantially resistant to external environments such as but not limited to water, acidic fog, smoke and numerous other environments that at least partially contain materials and matter that could be damaging to the internal components of light  1300 . 
     Referring now to  FIG. 13B , there is illustrated an alternative embodiment of light  1300  as similarly illustrated in  FIG. 13A . It is noted that the elements of light  1300  illustrated in  FIG. 13B  that are the same as illustrated in  FIG. 13A  are depicted with identical references numerals and are as described above. As depicted in  FIG. 13B , the end  1350  of the light  1300  includes a generally cylindrical female connector portion with a first magnetic field emission structure  1310   a  integrally mounted about the inner perimeter therein. The body  1360  includes a corresponding male connector portion with a second magnetic field emission structure  1322   a  integrally mounted about the outer perimeter thereof. The first magnetic field emission structure  1310   a  and the second magnetic field emission structures  1322   a  each include an array of field emission sources as similarly described herein. Each of the first magnetic field emission structure  1310   a  and the corresponding second magnetic field emission structure  1322   a  can be coded in one singular encoded structure on in coded sections, with the first magnetic field emission structure  1310   a  and the second magnetic field emission structure  1322   a  encoded to be mirror images of one another. The coding is such that when the first magnetic field emission structure  1310   a  is located in certain proximity to the second magnetic field emission structure  1322   a  with certain alignment with respect to one another, the securing and sealing of the end  1350  to the body  1360  is accomplished. 
     With the proper coupling of the end  1350  to the body  1360 , a peak spatial attraction force exists between the first magnetic field emission structure  1310   a  and the second magnetic field emission structure  1322   a , thereby securing the end  1350  to the body  1360 . 
     Still referring to  FIG. 13B , the removal of the end  1350  from the body  1360  is accomplished by rotating the end  1350  with respect to the body  1360 . The rotation misaligns the corresponding first magnetic field emission structure  1310   a  from the second magnetic field emission structure  1322   a  removing each from a position of peak spatial attraction force, thereby permitting the removal of the end  1350  from the body  1360 . 
     Referring now to  FIG. 14A , another embodiment of the present invention is shown that represents a configuration of an exemplary light  1400 . The light  1400  includes a body  1410  and a lens cap  1420 . The light  1400  is constructed such that the body  1410  and the lens cap  1420  include matching generally planar flange portions  1412  and  1422  respectively for securing the body  1410  and the lens cap  1420  together. The flange portion  1412  of the body  1410  includes multiple first magnetic field emission structures  1430  and the flange portion  1422  of the lens cap  1420  includes multiple second magnetic field emission structures  1440 . The complementary magnetic field emission structures  1430  and  1440  are configured and aligned to releasably secure the lens cap  1420  to the body  1410  when the lens cap  1420  is placed proximate to the body  1410 . 
     Each of the first magnetic field emission structures  1430  include an array of field emission sources  1435  and each of the second magnetic field emission structures  1440  include an array of field emission sources  1445 . The first and second magnetic field emissions structures  1430  and  1440  both have source having polarities in accordance with the same code but are configured to be mirror images of one another (see  FIGS. 4A-4C  AND  15 A- 15 I), such that when corresponding first magnetic filed emission structures  1430  are located in certain proximity to the second magnetic field emission structures  1440  and have a certain alignment with respect to one another, the securing and sealing of the lens cap  1420  to the body  1410  is accomplished. 
     The removal of the lens cap  1420  from the body  1410  is accomplished by separating the attached first and second magnetic field emission structures  1430  and  1440 . In particular, the lens cap  1420  can be released from the body  1410  when the lens cap  1420  is rotated in relation to the body  1410  which will in turn, misalign the corresponding first and second magnetic field emission structures  1430  and  1440  (see  FIGS. 15A-15I ). If desired, a release mechanism  1620  can be used to turn the second magnetic field emission structure  1440  with respect to the first magnetic field emission structure  1430  so as to release the lens cap  1420  from the body  1410  (see  FIGS. 16A-16C ). 
     The attachment and de-attachment of the first and second magnetic field emission structures  1430  and  1440  is possible because of the array of field emission sources  1435  and  1445  respectively. The field emission sources  1435  and  1445  each have positions and polarities relating to a desired spatial force function that corresponds to a relative alignment of the first and second magnetic field emission structures  1430  and  1440  within a field domain (see discussion about correlated magnet technology). 
     Generally, the magnetic field emission structures  1430  and  1440  could each be coded utilizing the field emission sources  1435  and  1445  such that a user could only place and attach the lens cap  1420  in a predetermined position(s) thereby ensuring the proper assembly of the light  1400 . 
     It is contemplated to be within the scope of the present invention that the number and size of the first and second magnetic field emission structures  1430  and  1440  could be varied depending upon the intended use and design of the light  1400 . 
     Referring now to  FIG. 14B , there is illustrated an alternative embodiment of the light  1400  as similarly illustrated in  FIG. 14A . It is noted that the elements of the light  1400  illustrated in  FIG. 14B  that are the same as illustrated in  FIG. 14A  are depicted with identical references numerals and are as described above. As depicted in  FIG. 14B , the body  1410  of the light  1400  includes a flange portion  1412  with a first magnetic field emission structure  1430   a  integrally mounted about the outer perimeter thereon. The lens cap  1420  includes a generally circular lip with a second magnetic field emission structure  1440   a  integrally mounted about the inner perimeter thereof. The first magnetic field emission structure  1430   a  and the second magnetic field emission structure  1440   a  each include an array of field emission sources  1435  as similarly described herein. Each of the first magnetic field emission structure  1430   a  and the corresponding second magnetic field emission structure  1440   a  can be coded in one singular encoded structure or in coded sections, with the first magnetic field emission structure  1430   a  and the second magnetic field emission structure  1440   a  encoded to be mirror images of one another. The coding is such that when the first magnetic field emission structure  1430   a  is located in certain proximity to the second magnetic field emission structure  1440   a  with certain alignment with respect to one another, the securing and sealing of the end lens cap  1420  to the body  1410  is accomplished. 
     Subsequent to the coupling of the lens cap  1420  to the body  1410 , the lens cap  1420  can be rotated with respect to the body  1410  to a position such that a peak spatial attraction force exists between the first magnetic field emission structure  1430   a  and the second magnetic field emission structure  1440   a , thereby pulling the lens cap  1420  to the body  1410  with the second magnetic field emission structures  1440   a  positioned about and contiguous with the first magnetic field emission structure  1430   a.    
     Still referring to  FIG. 14B , the removal of the lens cap  1420  from the body  1410  is accomplished by rotating the lens cap  1420  with respect to the body  1410 . The rotation misaligns the corresponding first magnetic field emission structure  1430   a  from the second magnetic field emission structure  1440   a  removing each from a position of peak spatial attraction force, thereby permitting the removal of the lens cap  1420  from the body  1410 . 
     Referring to  FIGS. 15A-15I , there is depicted an exemplary first magnetic field emission structures and exemplary second magnetic field emission structures embodied in the present invention as described herein above in the various embodiments. In particular, an exemplary first magnetic field emission structure  1506  (attached to the light embodiments of the present invention as illustrated in  FIGS. 10A-14B ) and its mirror image second magnetic field emission structure  1508  (attached to a portion of the light embodiments of the present invention as illustrated in  FIGS. 10A-14B ) and the resulting spatial forces produced in accordance with their various alignments as they are twisted relative to each other which enables one to secure or remove the ends  1020 ,  1030  ( FIGS. 10A ,  10 B and  11 ),  1240  ( FIGS. 12A and 12B ),  1350  ( FIGS. 13A and 13B ), or lens cap  1420  ( FIGS. 14A and 14 ) from the embodiments of the present invention. 
     In  FIG. 15A , the first magnetic field emission structure  1506  and the mirror image second magnetic field emission structure  1508  are aligned producing a peak spatial force. 
     In  FIG. 15B  the mirror image second magnetic field emission structure  1508  is rotated clockwise slightly relative to the first magnetic field emission structure  1506  and the attractive force reduces significantly. In  FIG. 15C , the mirror image second magnetic field emission structure  1508  is further rotated and the attractive force continues to decrease. In  FIG. 15D , the mirror image second magnetic field emission structure  1508  is still further rotated until the attractive force becomes very small, such that the two magnetic field emission structures  1506  and  1508  are easily separated as shown in  FIG. 15E . Given the two magnetic field emission structures  1506  and  1508  held somewhat apart as in  FIG. 15E , the two magnetic field emission structures  1506  and  1508  can be moved closer and rotated towards alignment producing a small spatial force as in  FIG. 15F . The spatial force increases as the two magnetic field emission structures  1506  and  1508  become more and more aligned in  FIGS. 15G and 15H  and a peak spatial force is achieved when aligned as in  FIG. 15I . It should be noted that the direction of rotation was arbitrarily chosen and may be varied depending on the code employed. Additionally, the minor image second magnetic field emission structure  1508  is the mirror of the first magnetic field emission structure  1506  resulting in an attractive peak spatial force (see also  FIGS. 3-4 ). This way of securing and removing the ends  1020 ,  1030  ( FIGS. 10A ,  10 B and  11 ),  1240  ( FIGS. 12A and 12B ),  1350  ( FIGS. 13A and 13B ), or the lens cap  1420  ( FIGS. 14A and 14B ) from the embodiments of the present invention illustrated is a marked-improvement over the existing technology in which conventional threads or friction are utilized having the problems associated therewith as previously described herein. 
     The embodiments of the present invention illustrated herein can include a release mechanism  1620  that is used to turn one magnetic field emission structure relative to a second corresponding magnetic field emission structure so as to attach or release the ends such as with  1020 ,  1030  ( FIGS. 10A ,  10 B and  11 ),  1240  ( FIGS. 12A and 12B ),  1350  ( FIGS. 13A and 13B ), or lens cap  1420  ( FIGS. 14A and 14B ) from the embodiments of the present invention illustrated herein. Alternatively, the embodiments of the present invention illustrated herein can include another type of release mechanism (not shown) that includes two field emission structures which are used to turn the second magnetic field emission structure relative to the first magnetic field emission structure so as to attach or release the ends  1020 ,  1030  ( FIGS. 10A. 10B  and  11 ),  1240  ( FIGS. 12A and 12B ),  1350  ( FIGS. 13A and 13B ), or lens cap  1420  ( FIGS. 14A and 14B ) from the exemplary embodiments of the present invention. 
     Referring to  FIGS. 16A-16C , there are illustrated several diagrams used to explain the exemplary release mechanism  1620  in accordance with an embodiment of the present invention. In  FIG. 16A , the one end  1610  has the magnetic field emission structure  1612  with a first code and the other end  1614  has the mirror image magnetic field emission structure  1616  also based on the first code. The magnetic field emission structure  1612  is physically secured to the release mechanism&#39;s magnetic field emission structure  1622  which has a second code. A separation layer  1624  made from a high permeability material may be placed between the two magnetic field emission structures  1612  and  1622  to keep their magnetic fields from interacting with one another. The two magnetic field emission structures  1612  and  1622  are configured so that they can turn about axis  1626  allowing them to be moved so as to allow attachment to and detachment from the magnetic field emission structure  1616  which enables the two ends  1610  and  1614  to be connected to and separated from one another. The release mechanism  1620  can also include at least one tab  1628  which is positioned to stop the movement of the two magnetic field emission structures  1612  and  1622 . In addition, the release mechanism  1620  can include a key mechanism  1630  which has a magnetic field emission structure  1632  which is coded using the second code such that it corresponds to the mirror image of the magnetic emission field structure  1622 . The key mechanism  1630  also includes a gripping mechanism  1634  that would typically be turned by hand. As shown, the key mechanism  1630  can be attached to the end  1610  by substantially aligning the two magnetic field structures  1622  and  1632 . The gripping mechanism  1634  can then be turned about axis  1626  so as to align or misalign the two magnetic field emission structures  1612  and  1616 , thereby attaching or detaching the two ends  1610  and  1614 . 
     In  FIG. 16B , there is depicted a general concept of using the tab  1628  so as to limit the movement of the two magnetic field emission structures  1612  and  1622  between two travel hunters  1636   a  and  1636   b . The two magnetic field emission structures  1612  and  1622  are shown having a hole  1638  through their middle that enables them to turn about the axis  1626 . The two travel limiters  1636   a  and  1636   b  might be any fixed object placed at desired locations that limit the turning radius of the two magnetic field emission structures  1612  and  1622 . 
       FIG. 16C  depicts an alternative approach where end  1610  includes a travel channel  1640  that is configured to enable the two magnetic field emission structures  1612  and  1622  to turn about the axis  1626  using hole  1638  and has travel limiters  1640   a  and  1640   b  that limit the turning radius. One skilled in the art would recognize that the tab  1628  and at least one travel limiter  1636   a ,  1636   b ,  1640   a  and  1640   b  are provided to simplify the detachment of key mechanism  1630  from the end  1610 . 
     It is contemplated within the scope of the present invention that the embodiments illustrated herein could have more than one light source. Additionally the light sources could function to provide a light of variable intensity for example but not by way of limitation, a light of different intensities, consistent light, or a blinking light pattern. It is further contemplated that the light might provide one or more colors, provide one or more patterys (or symbols), and/or provide one or more beam sizes to include a variable beam size. 
     In the preceding detailed description, reference has been made to the accompanying drawings that form a part hereof, and in which are shown by way of illustration specific embodiments in which the invention may be practiced. These embodiments, and certain variants thereof, have been described in sufficient detail to enable those skilled in the art to practice the invention. It is to be understood that other suitable embodiments may be utilized and that logical changes may be made without departing from the spirit or scope of the invention. The description may omit certain information known to those skilled in the art. The preceding detailed description is, therefore, not intended to be limited to the specific forms set forth herein, but on the contrary, it is intended to cover such alternatives, modifications, and equivalents, as can be reasonably included within the spirit and scope of the appended claims.

Technology Category: 3