Upper torso exerciser
II. BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to an upper torso exerciser, and more particularly to the type that a user applies his or her own weight for the exercises. 
     2. Description of the Related Art 
     There are many exercising devices of different types for exercising a person&#39;s upper torso. Most of them involve rather complicated voluminous apparatus such as, chest expander units found in most gyms. The present invention, on the other hand, permits a user to exercise his or her upper torso with a volumetrically efficient and simple device. 
     III. SUMMARY OF THE INVENTION 
     It is one of the main objects of the present invention to provide a device that permits a user to improve his or her muscles in the upper torso portion of the body. 
     It is another object of this invention to provide a device that includes a distance reader for tracking the distance traveled by the device caused by the movements. 
     It is still another object of the present invention to provide a device that is volumetrically efficient for storage and transporting. 
     It is yet another object of this invention to provide such a device that is inexpensive to manufacture and maintain while retaining its effectiveness. 
     Further objects of the invention will be brought out in the following part of the specification, wherein detailed description is for the purpose of fully disclosing the invention without placing limitations thereon. 
    
    
     IV. BRIEF DESCRIPTION OF THE DRAWINGS 
     With the above and other related objects in view, the invention consists in the details of construction and combination of parts as will be more fully understood from the following description, when read in conjunction with the accompanying drawings in which: 
     FIG. 1 is an isometric view of a preferred embodiment for the present invention from the top. 
     FIG. 2 is a bottom view of this invention shown in the previous figure. 
     FIG. 3 is an elevational view of this invention with a partial cross section showing the track ball assembly. 
     FIG. 4 is a representation of an application of the present invention. 
     FIG. 5 is a block diagram representation of the circuit used in the preferred embodiment. 
    
    
     V. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring now to the drawings, where the present invention is generally referred to with numeral 10, it can be observed that it basically includes exerciser housing assembly 20 with grip member 28 rigidly mounted thereto, four steel ball transfer assemblies 30 and track ball assembly 40. 
     Exerciser housing assembly 20, in the preferred embodiment, includes upper surface 22, lower surface 24 and peripheral wall 26. A user grabs device 10 through grip member 28 leaning on it. Exerciser housing assembly 20 also includes four steel ball transfer assemblies 30 mounted to lower surface 24. Assemblies 30 have ball members 31 which partially protrude from lower surface 24, as best seen in FIG. 3. Assemblies 30 permit device 10 to be moved freely in rotational and lineal directions since assemblies 30 are multi-directional, as shown in FIG. 4. Assemblies 30 could be implemented with steel ball transfer assemblies such as stud mount model M1900 distributed by Grainger, 2255 N. W. 89th Place, Miami, Fla. 33122. 
     Track ball assembly 40, in the preferred embodiment, is partially housed within housing assembly 20 and ball members 42 protrude from upper surface 22. Ball member 42 detects the movement of upper torso device 10. Ball member 42 is partially housed within assembly 40 which in turn is mounted inside cavity 23 of housing assembly 20. Spring member 46 is also housed within cavity 23 pushing assembly 40 outwardly toward the supporting surface. The characteristics of spring member 46 are such that a sufficient force is exerted on assembly 40 to cause ball member 42 to effectively roll when device 10 is moved. Track ball assembly 40 can be implemented using series 225 Trackball manufactured by Damaher Controls. 
     The output of track ball assembly 40 is connected to counter/display assembly 60 which decodes the output signal of the former. Counter/display assembly 60 has a digital display that shows the distance traveled by device 10 during the exercise session. Assembly 60 can be implemented with Model C346 marketed under the brand Veedor-Root by Damaher Controls, 1675 Delany Road, Gurnee, Ill. 60031-1282. A suitable battery assembly 80 is provided to power assemblies 40 and 60. The display of assembly 60 is resettable and more elaborate circuitry can be provided to record and analyze the movement history of device 10, such as adding memory circuitry and output interface. However, only the pioneering inventive concepts are claimed in the present application since these additional improvements are to be considered for production and final units depending on the pertinent marketing studies. 
     There are other means for reading the movements of device 10, such as those that optically or magnetically read the rotation of wheels 30. But, it is believed that by achieving an effective contact of ball member 42 to the surface a more practical implementation is obtained. 
     The foregoing description conveys the best understanding of the objectives and advantages of the present invention. Different embodiments may be made of the inventive concept of this invention. It is to be understood that all matter disclosed herein is to be interpreted merely as illustrative, and not in a limiting sense.