Patent Abstract:
A device comprising an arm, with a hollow portion, a hub having a stator portion, and an elongated portion disposed into the arm; a rotor with an elongated portion for housing part of a spring. Wherein the spring has a first end disposed in the arm and a second end disposed in the elongated portion of the rotor, and a moveable arm, with a substantially hollow portion operable to receive the elongated portion of the rotor. Certain embodiments may include more than one moveable arm.

Full Description:
PRIORITY 
     This application claims the benefit of co-pending provisional patent application 61/794,591 filed Mar. 15, 2013 entitled “System To Allocate Luminance” by the same inventors which is incorporated by reference as if fully set forth herein. 
    
    
     BACKGROUND 
     The present invention relates generally to a luminaire and with more particularly to a modular lighting system, which comprises a plurality of lighting system components, which can be designed in a variety of different ways. With even more particularity to a device for attaching a lighting system to a support structure and for adjusting a luminaire position. Lighting fixtures are one of the basic lighting devices used in homes, offices and a variety of industrial settings. A typical lighting fixture may be mounted on a wall, at a position above a desk, in a corridor, a door entrance, or a garage door such that the lighting fixture can illuminate the area. There are many factors that control the market for luminaires and lighting systems. A few important factors are the ability to create a well-lit hospitable environment, cost efficiency such as operating cost and other associated costs, code compliance, and more particularly aesthetics. One task lighting designers have is finding adjustable illumination in accordance with an architectural design. Traditional luminaires when mounted expose a bulky base to support the luminaire. This creates an aesthetics issue. To make the environment more aesthetically pleasing, the base of the luminaire should be clean and sleek. Additionally lighting designers have the task of positioning luminaires at the correct angle to better illuminate the environment. As such there is a need for an easy to install, affordable means for attaching a lighting system to a wall or other support structure such that no escutcheon or canopy is required, and for adjusting the positioning of the luminaire. 
     SUMMARY 
     Disclosed herein is a device comprising an arm, said arm having a hollow portion, a hub, said hub having a stator portion, said hub having an elongated portion disposed into the arm; a rotor, said rotor including an elongated portion for housing part of a spring, said spring having a first end disposed in the arm and a second end disposed in the elongated portion of the rotor, and a moveable arm, said movable arm including a substantially hollow portion operable to receive the elongated portion of the rotor. Certain embodiments may include more than one moveable arm. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  illustrates a luminaire  110  mounted in a lighting fixture. 
         FIG. 2  shows an alternative embodiment according to the present disclosure. 
         FIG. 3  shows an embodiment for operation with multiple light rails. 
         FIG. 4  shows details of one embodiment of a spring-loaded pivot hub. 
     
    
    
     DESCRIPTION 
     Specific examples of components and arrangements are described below to simplify the present disclosure. These are, of course, merely examples and are not intended to be limiting. In addition, the present disclosure may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. 
     Read this application with the following terms and phrases in their most general form. The general meaning of each of these terms or phrases is illustrative, not in any way limiting. 
     Lexicography 
     The term “luminaire” generally refers to a lighting unit consisting of a lamp or lamps together with the parts designed to distribute the light, to position and protect the lamps and to connect the lamps to the power supply. 
     The term “luminance” generally refers to the brightness of a light source or an object that has been illuminated by a source. 
     DETAILED DESCRIPTION 
       FIG. 1  illustrates a luminaire  110  mounted in a lighting fixture  100 . The lighting fixture  100  has a first arm  112  and a second arm  114 . The first and second arm  112  and  114  are coupled via a knuckle  116 . The knuckle is spring loaded (not shown) for tensioning the lighting fixture  100  when the first arm is pivoted. A power switch  118  is disposed into the second arm  114  for controlling the luminaire  110 . The second arm  114  swivels about a base plate  120 , which in operation would be disposed above the mounting surface (not shown). The base plate  120  is coupled atop a base  122 . The base  122  may be partially threaded to allow for coupling to a hex nut, clip or other threaded fastener (not shown). The hex nut may be used to hold in place a separator  124  such as a washer and the like. Together the hex nut and separator  124  form a part of a means for fastening the base  122  to a surface. A portion of the base has boreholes (not shown) for receiving screws and the like. When the second arm  114  is positioned into an opening in the base plate  120  and into the base  122 , the screws are used to secure the second arm  114  in place. A covering  126 , with compartment (not shown), is affixed to the bottom of the fixture support opposite side of the base plate  120 . 
     In operation, electrical power is supplied through an opening in the covering  126  into the base  122  into the second arm  114 , through the knuckle  116 , into the first arm  112  and to the luminaire  110 . The electrical power is wired through the power switch  118  before being coupled to the luminaire  110 . A user controls the luminaire  110  by operating the power switch  118 . One having skill in the art will appreciate that other control devices such as occupancy sensors may be employed in lieu of, or along with, the power switch  118 , thus effectuating control of the luminaire using more advanced means. The user can adjust the position of the luminaire  110  by pivoting the first arm  112  at the knuckle  116 . In addition, power for other devices besides the luminaire may be routed through the fixture support. 
     References in the specification to “one embodiment”, “an embodiment”, “an example embodiment”, etc., indicate that the embodiment described may include a particular feature, structure or characteristic, but every embodiment may not necessarily include the particular feature, structure or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one of ordinary skill in the art to effect such feature, structure or characteristic in connection with other embodiments whether or not explicitly described. Parts of the description are presented using terminology commonly employed by those of ordinary skill in the art to convey the substance of their work to others of ordinary skill in the art. 
       FIG. 2  shows an alternative embodiment according to the present disclosure. In  FIG. 2  an arm  210  includes a hollow center area  212  and an end cap  214  which includes support for mounting the arm  210 . A movable arm  216  includes a spring-loaded pivot hub  218 . The pivot hub  218  includes two tabs  220  formed to fit snugly into the hollow center  212  of the arm  210 . Spring tension may be set to accommodate the weight of the movable arm  216  and a light rail  222  attached at the end of the movable arm  216 . 
     The light rail  22  may include controls for operating a light source such as one or more light emitting diodes (LEDs) or lamps. These controls may include switches, or in some embodiments an operating switch may be placed on either the movable arm  216  or the arm  210 . In operation the tabs  220  are inserted into the hollow  212  and the light rail  222  is held upright. 
       FIG. 3  shows an embodiment for operation with multiple light rails. In  FIG. 3  an arm  310  includes a hollow center area  312  and an end cap  314  which includes support for mounting the arm  310 . Movable arms  316  include a spring-loaded pivot hub  318  which provides for dual operation. The pivot hub  318  includes two tabs  320  formed to fit snugly into the hollow center  312  of the arm  310 . Spring tension may be set to accommodate the weight of the movable arms  316  and the light rails  322  attached at the end of the movable arm  316 . 
       FIG. 4  shows details of one embodiment of a spring-loaded pivot hub. An arm  410  includes a stator portion of the hub  412 . The stator portion of the hub  412  may include one or more extended members or tabs (not shown) which are inserted into a hollow in arm  410 . The stator portion of the hub  412  may be substantially circular and includes a threaded receptor for receiving a pin  420 . A coiled spring  414  having extended ends is installed with one end positioned into the arm  410  and the other end in a housing  416 . The housing  416  has a circular rotor portion and an elongated portion, and the spring end is inserted into the elongated portion of the housing  416 . The elongated portion of the housing  416  is also formed to hold a movable arm  422  which slips over the elongated portion. The pin  420  is positioned through the rotor portion of the housing  416  and may be set in place using one or more slip washers or bearings  418 . The end of the pin  420  is positioned into the center of the stator portion of the hub  412  and operates to hold the spring-loaded moveable arm  422  together through the pivot action. 
     When assembled, the coiled portion of the spring  414  is enclosed between the static circular housing and the rotor circular housing. The pin  420  secures the parts together and allows for pivoting about the pin  420 . With the pin  420  may be screwed into the stator portion of the hub  412 , but still allow for movement because the pin  420  is not threaded the whole length. Also, the o-ring  418  and other o-rings which may be employed may be manufactured from TEFLON or other low friction material to allow for moving the moveable arm  422  about the hub. 
     The torsion strength of spring  414  may be selected based on the weight of a luminaire which may be attached to the moveable arm  422 . This provides for a spring loaded knuckle which may be positioned by the user. Some embodiments may allow pin  420  to be tightened having the affect of locking the moveable arm  422  in place. 
     The above illustration provides many different embodiments or embodiments for implementing different features of the invention. Specific embodiments of components and processes are described to help clarify the invention. These are, of course, merely embodiments and are not intended to limit the invention from that described in the claims. 
     Certain aspects and embodiments of the current disclosure are included in the attached appendix which is incorporated by reference as if fully set forth herein. 
     Although the invention is illustrated and described herein as embodied in one or more specific examples, it is nevertheless not intended to be limited to the details shown, since various modifications and structural changes may be made therein without departing from the spirit of the invention and within the scope and range of equivalents of the claims. Accordingly, it is appropriate that the appended claims be construed broadly and in a manner consistent with the scope of the invention, as set forth in the following claims.

Technology Classification (CPC): 5