Patent Publication Number: US-7594876-B2

Title: Method of hand exercising and massaging

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
   This application is a Divisional application of the patent application Ser. No. 11/805,619 filed May 23, 2007 now U.S. Pat. No. 7,448,985 which is a Divisional application of the patent application Ser. No. 10/637,435 filed Aug. 8, 2003 (currently U.S. Pat. No. 7,223,207 B1) which claims the benefit under 35 U.S.C. 119 (e) of U.S. Provisional Application No. 60/410,194 filed by Simon Basyuk on Sep. 13, 2002. 

   BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   This invention relates to exercise and therapeutic devices and more particularly, it relates to the devices for stress relief and developing of muscles associated with hands, fingers, etc. 
   2. Description of the Related Art 
   Persons afflicted with many infirm conditions often lack the considerable hand and finger strength required to perform often basic functions associated with everyday living. For example, weak finger muscles, as well as other physical conditions, may be resulted in the difficulty grasping, manipulating objects and generating a pincer grip by elderly or infirm. For example, people suffering from deteriorating tissue or muscles of the fingers or palm may be unable to grasp and manipulate many basic implements without incurring debilitating pain. These medical conditions may also adversely affect a person&#39;s ability to perform rotational and similar functions. This is particularly troublesome to a person whose hands have been disabled by arthritis, multiple sclerosis, muscular dystrophy, and other disabilities. Furthermore, many elderly individuals also have limited hand dexterity further contributing to the difficulty in holding and/or grasping objects. Such limited hand dexterity also leads to reduced ability of such individuals to pick up, manipulate and exert force on various implements and objects. 
   It is well known that physical exercise can improve the condition of such individuals through the developing of the muscles of fingers and hands, so as to improve the ability to hold, grasp and manipulate the implements and objects and to enhance the pincer grip. 
   Today, many physical therapy facilities, fitness centers, etc. are provided with exercising machines adapted to improve general physical condition of a human body. Despite the wide range of equipment and programs, exercise devices for development of the hands, fingers and palms have been largely neglected. It is notable that, despite the many expensive exercise devices, it is difficult to find equipment for increasing the strength and flexibility of the hands, fingers, etc. This is especially related to those devices which are light in weight and efficient for use by many individuals including elderly and infirm. This is in spite of the fact that such equipment is important for maintaining the essential living functions by many individuals. Even when available, however, the development and implementation of exercise devices for the hands and fingers has lagged in comparison to other exercise devices. 
   The hand exercising devices of the prior art generally suffer from one or more drawbacks and limitations that oftentimes render them undesirable or unsuitable for use by elderly or infirm or by others in hand muscle exercises. Generally, these drawbacks and limitations stem from the device structure. By way of example, U.S. Pat. No. 5,299,991 to Sato discloses a finger training device incorporating a relatively complex mechanical structure. U.S. Pat. No. 6,007,460 to Yunk provides a hand exercise device adapted for use by athletes in which a substantial force exerted by four fingers of one hand is required in order to overcome a substantial force generated by the resilient element. In many instances this device is not completely suitable for use in therapeutic purposes. U.S. Pat. No. 5,533,949 provides a hand-muscle developing device with music producing means which is clearly complicated, expensive in manufacturing and not always suitable for use by the elderly or infirm. Even more sophisticated devices including the inventors&#39; own hand exercise device disclosed by U.S. Pat. No. 6,241,637 provide a hand exercise device adaptable for use by athletes or others requiring development of hand or finger strength as a part of physical exercise and not necessarily adapted for use by individuals afflicted by infirm conditions. 
   Thus, it has been long felt and unsolved need to provide a light, simple and reliable hand exercise device having uniform application and adaptable for use by elderly, infirm as well as by other individuals requiring development of hand and finger muscles and joints. 
   SUMMARY OF THE INVENTION 
   One aspect of the invention provides an exercise device having a housing with at least a wall portion, at least two apertures extending through the wall portion and spaced from each other and at least one elongate rod having a center section. The center section being adapted for slidable movement through the apertures. A friction generating arrangement provides frictional engagement of the at least one rod with the apertures to thereby resist slidable movement of the rod through these apertures. 
   As to another aspect of the invention, the housing is formed having a substantially hollow configuration, wherein at least one elongate rod comprises at least two elongate rods, at least two apertures comprise at least two pairs of apertures and each elongate rod being slidably received within the respective apertures. The wall portion, two pairs of apertures and two elongate rods are arranged in such a manner that the elongate rods apply pressure on each other resulted in frictional engagement of the elongate rods with each other and with the apertures, so as to resist sliding movement of the rods within the apertures. The elongate rods can be positioned at an angle to a plane perpendicular to a longitudinal axis of the housing. 
   As to a further aspect of the invention, the wall portion is formed of a resilient material and an outer periphery of at least one aperture is deformed so as to provide resistance to the slidable movement of a rod. The rod can be positioned at an angle to an axis passing through a plane of the aperture prior to insertion of the rod therethrough. 
   As to another aspect of the invention, the friction generating arrangement includes a biasing member extending longitudinally within the housing, so as to exert pressure on the elongate rod. The friction generating arrangement can be in the form of a resilient member interposed between a bottom portion of a housing and at least one elongate rod. 
   As to a still further aspect of the invention, the friction generating arrangement can be formed as an elongated, resilient friction generating member longitudinally extending within the housing, so as to engage and exert pressure on the rod and to provide resistance to slidable movement of the rod within the respective apertures. 
   In yet another embodiment of the invention, an insert is provided operationally associated with the housing and adapted to provide resistance to slidable motion of the rod. The insert is formed with at least one pair of openings corresponding to the respective pair of apertures. Each opening can be formed with a frictional member extending toward a central area thereof, so as to provide additional resistance to the slidable motion of the rod. A plurality of slots can be provided extending between each opening and one of top or bottom regions of the insert. 

   
     BRIEF DESCRIPTION OF DRAWINGS 
     The preferred embodiments of the invention will hereinafter be described in conjunction with the appended drawings provided to illustrate and not to limit the invention, where like designations denote like elements, and in which: 
       FIG. 1  is a perspective view of the device according to one embodiment of the invention; 
       FIG. 2  is a top plan view of the device shown in  FIG. 1 ; 
       FIG. 3  shows a wall element of the device shown in  FIG. 1  in flat condition; 
       FIG. 4  illustrates positioning of the device in the hand of a user; 
       FIG. 5  illustrates an embodiment of the device utilizing seven rods; 
       FIG. 6  is a side elevational view of the device having housing formed as a truncated spheroid; 
       FIG. 7  schematically shows a wall element of the device depicted in  FIG. 6  in flat condition; 
       FIG. 8  is a cross-sectional view showing another embodiment of the rod; 
       FIG. 9  is a top plan view of the device having curved rods; 
       FIG. 10  illustrates one embodiment of the friction-generating arrangement; 
       FIG. 11  is a cross-sectional view taken along line  11 - 11  of  FIG. 10   
       FIG. 12  is a cross-sectional view taken along section line  12 - 12  of  FIG. 2   
       FIG. 13  is a cross-sectional view showing a wall element and a rod according to another embodiment of the friction-generating arrangement; 
       FIG. 14  is a cross-sectional view of a wall element and a rod before being positioned as illustrated in  FIG. 13 ; 
       FIGS. 15 ,  16  and  17  illustrate a further embodiment of the friction-generating arrangement; 
       FIG. 18  is a top plan view of the device showing an embodiment of the friction-generating arrangement utilizing a resilient member; 
       FIG. 19  is a cross-sectional view of the device showing a further embodiment of the friction-generating arrangement with a resilient member; 
       FIG. 20  is a cross-sectional view of the device using the friction-generating arrangement with a biasing element; 
       FIG. 21  is a top plan view showing a wall element of an S-shaped cross section; 
       FIG. 22  is a cross-sectional view taken along section line  22 - 22  of  FIG. 21 , without the rod being positioned in the apertures. 
       FIG. 23  is a schematic diagram of forces applied to the rods of  FIG. 21 ; 
       FIGS. 24 and 25  illustrate therapeutic application of the invention to a palm of a user; 
       FIGS. 26 ,  27  and  28  are front, left-hand end and top plan views of the invention, respectively, with two rods in the extracted position; 
       FIGS. 29 ,  30  and  31  are front, left-hand end and top plan views of the invention, respectively, with two rods in the contracted position; 
       FIG. 32  is a top view schematically illustrating intermediate positions of tips of two rods shown in  FIGS. 24 and 25 ; 
       FIG. 33  is a perspective view of the massaging device of the invention; and 
       FIG. 34  is a partial cross-sectional view of the device shown in  FIG. 33 . 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
   Referring now to the drawings, and to  FIGS. 1 and 2  in particular, a hand exercise device  10  according to a first embodiment of the invention comprises a housing  12 , a plurality of exercise rods  14  adapted for slidable motion within the respective operational apertures  16  formed in the housing  12 . The housing is preferably molded into a cylinder having a substantially hollow interior and is sized to fit comfortably in the hand of a user. A plurality of operational apertures  16  are formed with a wall  20  of the housing so as to extend between an outer surface  17  and an inner surface  19  of the wall. The housing may be constructed of a plastic material that is capable of retaining its original shape and resistant to deformation from forces applied by a user&#39;s hand. It is to be understood, of course, that the housing may be formed of any suitable material that is capable of retaining its shape, and may be formed into any desired configuration. Number and location of the apertures will be described further. 
   Each exercise rod  14  includes an elongate center section  22  that is preferably formed having a substantially cylindrical configuration and extends between two end sections  24  and  26 . In the preferred embodiment of the invention each rod  14  is slidably supported by a pair of operational apertures  16 . Preferably, the center section and end sections have the same cross-section. In another embodiment of the rod illustrated in  FIG. 8 , the end sections  24  and  26  are formed with enlargements having greater diameter than the diameter of the respective operational apertures  16 , so as to prevent separation of the rods from the housing. In another embodiment of the rod the enlargement can be located in the middle part of rod. Moreover, although the substantially cylindrical center section of the rod has been described hereinabove, the center section may be of any suitable cross-section, for example oval, as long as it facilitates slidable motion thereof with the operational apertures. Yet another embodiment showing curved-shaped rods  85  is illustrated in  FIG. 9 . 
   Although any reasonable number of apertures may be formed at different locations of the wall element  20 , in the embodiment of  FIGS. 1 ,  2  and  3  the housing is formed with ten operational apertures provided in the substantially cylindrical wall element. The apertures are typically located at two levels of the wall element, so as to be separated by the predetermined intervals DI. In this manner, apertures  21 ,  23 ,  25 ,  27  and  29  are provided at the upper level UL and apertures  21 ′,  23 ′,  25 ′,  27 ′, and  29 ′ are formed at the lower level LL (see  FIGS. 2 and 3 ). Each of five rods is slidably supported by a pair of apertures, wherein one aperture of each pair is located at the upper level and other at the lower level. These pairs of apertures are selected in a consequential order. By way of example, a first rod extends through apertures  25  and  21 ′, a second rod through apertures  23  and  29 ′, a third rod through apertures  21  and  27 ′, a fourth rod through apertures  29  and  25 ′, and a fifth rod through apertures  27  and  23 ′. In this manner each rod has the same inclination relatively to the plane perpendicular to the axis of cylindrical wall element. For a pair of adjacent rods, one rode is not parallel to another. On a top plan view, the combination of rods resembles a star with five rays, as illustrated in  FIG. 2 . 
     FIG. 5  illustrates the device of the invention formed with substantially cylindrical wall element  20  provided with fourteen operational apertures adapted to slidably receive seven rods  14 . As illustrated in this figure, the combination of the rods of this embodiment in the top plan view of the device resembles a seven-ray star. 
   The previous embodiments has been described with the housing having a substantially cylindrical wall element. However, it is to be understood that any configuration of the housing capable of being conveniently handled by a hand of the user is within the scope of the invention. In this respect,  FIG. 6  illustrates a housing  30  configured as a truncated substantially hollow spheroid. As illustrated in  FIGS. 6 and 7 , the housing is provided with twenty operational apertures  31  located at four levels A, B, C and D, with five apertures arranged at each level. This housing is capable of accommodating ten rods extending through the following ten pairs of apertures: A 5 -D 3 , A 1 -D 4 , A 2 -D 5 , A 3 -D 1 , A 4 -D 2  and B 5 -C 2 , B 1 -C 3 , B 2 -C 4 , B 3 -C 5  and B 4 -C 1 . A housing with twenty apertures located at corners of imaginary dodecahedron encircled into hollow spherical housing is also contemplated. In  FIGS. 10 and 11  the housing  32  is shaped as truncated cone. 
   Significantly, the exercising and stress relief capabilities of the device can be achieved by providing a resistance to the slidable motion of rods within the respective operational apertures. To achieve this function the device of the invention is provided with a friction-generating arrangement. A preferred embodiment of such arrangement is illustrated in  FIGS. 10 and 11 . Four apertures  44 ,  46 ,  48  and  49  are formed in the substantially hollow housing  32  with two identical cylindrical rods  34  and  36  being adapted for slidable motion through the apertures. The apertures are substantially circular in shape and their diameter is slightly greater than diameter of the rods. In this arrangement correlation between relative location of the apertures and diameters of the rods is such that in the assembled condition there is a light interference and/or engagement between the adjacent rods resulted in the pressure exerted by the rods on each other. Such pressure illustrated by the vector  38  causes reactive forces illustrated by the vectors  40  and  42  in areas of contact between the rod  36  and the apertures  44 ,  48 . Upon slidable motion of the rod  36  within the apertures  44 ,  48 , friction occurs between the rod and the respective edges of apertures resulted from the forces  40  and  42 . Additionally to that friction, there is also friction between the rods  34  and  36  themselves resulted from force  38 . The frictional forces produce required resistance to the slidable movement of the rods within the operational apertures. It is to be understood that the housing for this embodiment can be of any reasonable shape. 
   In the embodiments having multiple pairs of rods illustrated in  FIGS. 1 ,  2 ,  5  and  6 , the friction-generating arrangement is similar to that described with respect to  FIGS. 10 and 11 . In these embodiments the rods are also formed having substantially cylindrical configuration adapted for slidable cooperation with substantially circular operational apertures. Relative location of all apertures and diameter of the rods are such that there is light interference and/or engagement between the adjacent rods resulted in the pressure exerted by the rods on each other. As illustrated in  FIG. 12 , the rod  14  is slidably supported by the apertures  21  and  27 ′ and is positioned at an angle to a plane passing through a longitudinal axis A-A of the housing  12  and/or the device  10 . Two other adjacent rods exert pressure on the rod  14 , where one of such rods is supported by the apertures  23  and  29 ′ and another rod is supported by the apertures  29  and  25 ′ (see  FIG. 2 ). These two adjacent rods are also inclined with respect to the plane perpendicular to a longitudinal axis of the housing and/or device. The forces resulted from the pressure applied by the rods on each other are illustrated by the vectors  33  and  35 . These forces generate reactive forces illustrated by the vectors  37  and  39  which occur in areas of contact of the rod  14  with apertures  21  and  27 ′ causing in turn friction between the rods and edges of apertures which support the rods. In the same manner, each of the rods of the star-like rod arrangement is subjected to pressure from two adjacent rods. As in the previously described embodiment, resistance to the slidable movement of the rods within the operational apertures is resulted from friction between rods and edges of the respective apertures and also from the engagement between rods themselves. It is to be understood that the number of the rods and apertures, location of apertures and shape of the housing can vary. 
   Turning now to  FIGS. 13 and 14 , which illustrate another embodiment of the friction generating arrangement. An exercise device  50  employs an elongate rod  14  and wall element  20 , for clarity only one elongate rod  14  and a pair of apertures  52  and  54  adapted to slidably receive the rod  14  will be described in conjunction with the wall element  20 . It is to be understood, however, that plurality of exercise rods  14  and the corresponding number of apertures are typically associated with this embodiment. 
   In this embodiment the resistance to the movements of the rods and frictional forces associated therewith are resulted from the resiliency of the wall element and interaction between the resilient material of the wall of the housing and the rods. An essential feature of this embodiment (which is clearly illustrated in  FIG. 14 ) is that the planes passing through the operational apertures  52  and  54  are tangential to the cylindrical outer surface  17  of the wall  20  of the housing. In this manner the longitudinal axis  56  which passes through the apertures  52  and  54  is positioned at an angle “A” to the vector  58  which is substantially perpendicular to the plane of the respective aperture. The apertures  52  and  54  are substantially circular and their diameter is slightly greater than diameter of the respective rod. In this condition, as illustrated in  FIG. 13 , the insertion of the rod  14  into both respective apertures causes deformation of the wall material.  FIG. 14  illustrates a non-deformed state of the apertures  52  and  54 , prior to the insertion of the rod  14  therein. During the assembly one end of the rod  14  is inserted initially into aperture  52  substantially perpendicularly to its plane. Then the rod is tilted or pivotably moved in the direction identified by the arrows “a” and “b” until its orientation along the axis  56  is achieved and the other end is inserted into the aperture  54 . In this manner the rod  14  deforms the resilient material of the edges of both apertures. Such deformation is resulted in a pressure on the rod causing a friction when the rod slides through the apertures. The deformed resilient edges of the operational apertures  52  and  54  operate as a spring applying a pressure on the rod  14 . The forces generated by the deformed resilient edges of the operational apertures on the rod  14  are illustrated by the arrows  51  and  53  as well as  55  and  57 . 
   Turning now to  FIGS. 15 ,  16  and  17  illustrating a further embodiment which utilizes conceptual principles of the invention similar to that discussed hereinabove. As in the previously described embodiments, the exercise device consists of a substantially hollow, cylindrically-shaped housing  12  formed with a plurality of operational apertures  16  adapted to slidably receive the respective elongated rods  14 . An insert  62  configured to closely confirm the shape of the housing is also provided. Although, the insert can be positioned either inside or outside of the housing, the preferred version of this embodiment of the invention will be described with the insert  62  adapted to be positioned within an interior area of the housing. For the purposes of illustration,  FIG. 15  depicts the insert  62  situated outside of the housing  12  prior to its insertion into the substantially hollow interior area thereof. The insert  62  is typically formed from a soft deformable plastic and consists of a substantially hollow cylindrical body  64  extending between top  61  and bottom  63  regions thereof. A plurality of openings  66  is provided within the wall of the insert  62  in the locations corresponding to the respective operational apertures  16  of the housing. To facilitate assembly of the device, each opening  66  is connected to either top  61  or bottom  63  region of the insert by a corresponding slot  68 . Each opening  66  is formed with a frictional member or tongue  69  which extends inwardly from an outer periphery thereof. As illustrated in  FIG. 16 , during the manufacturing process the insert initially can be made in the form of a substantially flat strip  65  provided with the respective openings  66  and slots  68 . During the installation, the insert  62  is moved within the interior of the housing as illustrated by an arrow “B” in  FIG. 15 . Location and shape of the openings  66  and slots  68  facilitate positioning of the insert  62  within the housing  12  after the rods  14  have been positioned in the corresponding operational apertures  16 . The insert  62  is moved into its position within the interior of the housing  12  until each rod  14  is received within the respective slot  68  and then received within opening  66 . In this manner, the respective tongues  69  are deformed, providing a resistance to the slidable movement of the rod  14  within the operational apertures  16  of the housing and the respective openings  66  of the insert. As clearly illustrated in the cross-sectional view of  FIG. 17 , the interlocking relationship between the respective operational apertures  16  and the openings  66  having the tongues  69  provide a resistance to the slidable motion of the rods upon use of the exercising device by an individual. It should be also noted that the rods  14  can be inserted into the device after the insert  62  is fixedly located within the housing  12 . 
   Turning now to  FIGS. 18 and 19  illustrating a further embodiment of the invention utilizing another friction generating arrangement. As depicted in  FIG. 18 , an elongated resilient member  72  is adapted for insertion within the central portion of the substantially cylindrical housing  12 , so as to extend along the longitudinal axis thereof. Upon being positioned within the housing, the resilient member  72  exerts radially directed pressure on the rods  14 , the forces of pressure are illustrated by the arrows  74 . During slidable motion of the rods  14  within the respective operational apertures  16 , the pressure is resulted in the frictional forces, providing resistance to the slidable movement of the rods within the respective operational apertures. The friction occurs in areas of contact of the resilient member  72  with the rods and also in areas of contact of the rods with respective apertures. It should be noted that the forces  74  cause reactive forces at edges of the apertures. Although the centrally located cylindrically-shaped resilient member  72  is illustrated in  FIG. 18 , it is to be understood that the resilient member of a different configuration can be positioned within a different region of the substantially hollow inner area of the housing as long as the required pressure is exerted on the rods. 
   In the embodiment of  FIG. 19  the resilient element  76  is positioned within the interior of the housing  12  between the bottom portion  77  and the rod  14 . In this embodiment the resilient element  76  exerts pressure on the rod  14  in such a manner that the longitudinally directed force (illustrated by the arrow  78 ) acts on the rod  14 , and ultimately resulted in resistance to the slidable motion thereof within the respective operational aperture  16 . For clarity, only one rod  14  is illustrated in  FIG. 19 . 
     FIG. 20  illustrates the embodiments of the invention with another friction-generating arrangement utilizing a biasing element  80  in the form of a spring  82  extending longitudinally within the substantially hollow area of the housing  12  and supported by the bottom portion  83 . As shown in  FIG. 20 , an outer periphery of the biasing element or spring  82  is positioned in a close vicinity of the inner surface of the housing and an engaging element  84  is interposed between the rod  14  and the biasing element. The engaging element  84  is in the form of a ring or disc. Thus, the longitudinally directed pressure is transferred from the biasing element  80  to the central area of the rod  14  by means of the engaging element  84 . The pressure exerted on the rod  14  is also directed at the area of engagement between the rod  14  and the respective operational aperture  16 , thereby providing the required resistance to the slidable motion thereof. Another source of resistance is area of contact between the rod  14  and the engaging element  84 . For clarity, only one rod is illustrated in  FIG. 20 . Normally, multiple rods are received by the respective apertures  16 , so that the engaging element  84  exerts pressure on all rods in the area close to the wall  20 . A spherical or cone-shaped engaging elements which exerts pressure on the rods in the area close to longitudinal axis of the housing are also contemplated. It is to be understood that different locations of biasing and engagement elements are also within the scope of the invention. 
   A further friction generating arrangement providing resistance to slidable movement of the rods is illustrated in  FIGS. 21 ,  22  and  23 . Turning now to  FIG. 21  illustrating a wall  20  of a housing  12  having an S-shape configuration. Two cylindrical rods  214  and  214 ′ are slidably received within the three respective apertures. In this respect the rod  214  passes through apertures  216 ,  217 ,  218  and rod  214 ′ passes trough apertures  216 ′,  217 ′,  218 ′. Turning now to  FIG. 22  where relative location of tree apertures adapted to slidably receive each rod is illustrated schematically. There is a small angle “C” between two imaginary lines shown in  FIG. 22 . One such imaginary line passes through centers of apertures  216  and  217 , and another line passes through centers of apertures  217  and  218 . In this manner the rod  214  supported by apertures  216 ,  217  and  218  is slightly elastically deformed by the edges of supporting apertures. Forces applied to the rod  214  are illustrated schematically in  FIG. 23  by arrows  226 ,  227  and  228 . These forces are resulted in friction in areas of contact between the rod with the respective apertures, so as to provide resistance to the slidable motion of the rod through the apertures. Similarly, friction is generated when the rod  214 ′ slides trough apertures  216 ′,  217 ′ and  218 ′. It is to be understood that configuration of the wall element, location of the apertures and number of rods and shape of their cross-section can vary as long as for the frictional forces are generated for each rod in the manner described hereinabove. 
   It is to be understood that means that provide resistance to slidable movement of the rods disclosed hereinabove can be used separately or in combination with each other. It should also be understood also that any other suitable means could be used for the same purpose. 
   One example of the use of the device of the invention for the exercising purposes is illustrated in  FIG. 4 . As user grasps the housing  12  with thumb, middle and forth fingers of one hand the respective rod  14  which is in its extended condition is pushed by the index finger, so as to achieve a contracted position thereof in which the end portion of the rod is close to the housing. Obviously this movement causes extension of the rod on the opposite side of the housing. Once the desired amount of movement of the respective rods is achieved, the position of the fingers and thumb may be changed to push the next rod. Instead of using the thumb and fingers for controlling movement of the rods, areas of the hand, such as the palm, in combination with the thumb or one or more fingers can be used, depending on the type of exercise desired. In addition, the housing  12  may be held in one hand while the rods are pushed by the other hand and moved toward the one hand to thereby exercise the muscles associated with the hand, wrist, and arms. 
   Further to the benefits derived from using the exercise device of the invention, such as increased strength and mobility in the hand and fingers, motivation to exercise may be enhanced by intellectual stimulation which is also resulted in stress relief. For example, a user determines which rods must be inserted into which pairs of apertures, so as to achieve their exposure on one side of the housing and in which order the rods should be inserted through different pairs of apertures in the housing  12  without significant interference from other rods, so as to achieve for example a star-type formation by the rods. 
   On another hand, areas around each aperture may be painted in different colors so that each color indicates a pair of apertures to support a rod. For example, five colors may be used for the rod formation shown in  FIGS. 1 ,  2  and  3 . This may be necessary to provide a user with a guide to assemble the device. 
   In addition to the exercising and stress relief function, the device of the invention is also capable of providing a user with therapeutic or massaging capabilities. This is especially so when the ends of the rods are applied in a therapeutic manner to different parts of a human body. An example of the massaging or therapeutic application of the device of the invention to a palm of the user is being discussed herein below. As best illustrated in  FIGS. 2 and 5 , the device of the invention provides the star-like arrangement by the ends of pairs of adjacent rods which are uniformly dispersed along the outer periphery of the housing. Referring now to  FIGS. 24-32 , illustrating the therapeutic application of the device of the invention. As pressure is applied by a palm of the user against the extended ends, the rods  14  are being slided within the corresponding apertures  16  (see  FIGS. 24 and 25 ) in the manner described hereinabove. In view of the resistance to such slidable movement provided by the device, the engagement between the ends of the rods and the palm of the user resulted in therapeutic qualities which cause among other qualities stress dissipation in the respective areas of the palm. This occurs while the rods  14  are advanced in their slidable motion. In addition to the applied pressure, a slight pinch and deformation of skin occurred in the part of the palm engaging the rods. The pinch and skin deformation is mainly a result of the non-parallel orientation of the pairs of the rods  14  as illustrated in  FIGS. 26-32 . For clarity, only one pair of the rods  14  is illustrated in these figures. 
   Initially, when the fully extended rods  14  are applied against the skin of the user (see  FIGS. 24 ,  26 - 28 .), the distance between the ends of the rods, identified as D extended  (see  FIG. 28 ) is greater than the distance D contracted  between these ends of the rods at their location near the wall of the housing at the end of their slidable journey (see  FIGS. 25 ,  29 - 31 ). It is clearly illustrated in  FIG. 32  that the distance between the ends or tips of the rods  14  is progressively reduced during the slidable motion thereof from the fully extended to a contracted or submerged position. The imaginary line  92  (see  FIG. 32 ) depicting the distance between the ends of the rods is reduced and also the line is slightly rotated while the rods  14  are advanced in their slidable motion. This gradual reduction of the distance  92  between the ends of the rods  14  and the rotation is resulted in a slight pinch and deformation of an area of the skin situated there between. It is to be understood that therapeutic application of the device of the invention will occur when it is applied to the parts of the body other than palm. 
   Referring now to  FIGS. 33 and 34  illustrating a modified version of the massaging device  100  of the invention. A substantially hollow housing  112  is formed by a substantially cylindrical outer wall  120  which extends between two side walls  122  and  124 . A shaft  126  extends longitudinally within the hollow interior space  128  passing through the openings  132  and  134  in the side walls  122 ,  124 . The shaft  126  consists of a central region  125  located within the hollow interior space  128  of the housing and two outer regions or handles  127  extending outwardly there from and adapted to be conveniently positioned within the hands of an operator. A multiplicity of operational apertures  116  are formed within the substantially cylindrical wall  120 , so as to receive the respective rods  114  adapted for slidable motion in the manner described hereinabove. In use an operator while holding the handles  127  by both hands rotationally apply tips of the rods  114  against the skin of the user. In view of the substantial length of the housing  112 , the massaging area of the device typically covers a greater area of the body and generates an enhanced massaging effect compared to the embodiments discussed hereinabove. 
   While the invention has been taught with specific reference to the above-described embodiments, those skilled in the art will recognize that changes can be made in form and detail without departing from the spirit and the scope of the invention. Thus, the described embodiments are to be considered in all respects only as illustrative and not restrictive. The scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description. All changes that come within the meaning and range of equivalency of the claims are to be embraced within their scope.