Patent Publication Number: US-2022233911-A1

Title: Arm exercise attachment

Description:
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT 
     The present invention was made with no government support. 
    
    
     RELATED PATENT APPLICATIONS AND INCORPORATION BY REFERENCE 
     Not applicable 
     FIELD OF THE INVENTION 
     The present invention is directed generally to exercise equipment. More specifically, the present invention is directed to a unique portable push/pull exercise apparatus that is adapted to permit the user to work muscle groups in the upper body, particularly the arm muscles, and to also concurrently perform cardiovascular exercise. 
     BACKGROUND OF THE INVENTION 
     For years, the obesity epidemic has plagued the United States and obesity rates are continuing to increase worldwide. Some estimates approximate over 33% of adults and over 20% of children and adolescents in the United States are obese. Undoubtedly, obesity is one of the most significant and challenging public health issues in today&#39;s world. 
     Although poor diet and overeating are general causes of obesity, lack of exercise and inactivity are believed to be the primary drivers for the continuous rise in obesity rates. Physical activity can help people maintain a healthy weight or lose unwanted excess weight. Regular exercise provides a variety of benefits, including lowering the risk of heart disease, stroke, Alzheimer&#39;s disease, osteoporosis, high blood pressure, cancer, and other diseases. Moreover, regular exercise helps reduce stress, elevates mood, improves cognitive function, benefits joint health, increases circulation leading to healthier skin and may also help sexual function. 
     There is a vast array of exercise equipment available for use at home and in commercial gyms as a means for staying active and getting regular exercise. However, many of the exercise machines known in the art, such as treadmills and stationary bikes, allow for minimal or no arm movement and provide no upper body workout. 
     Known exercise machines that feature both upper and lower body movement and exercise are generally cost-prohibitive and can only be used in one fixed location. 
     A need exists for an exercise apparatus that provides an upper body workout, takes up minimal space, is compatible with lower body workout machines, is portable, and is easy and inexpensive to manufacture. 
     SUMMARY OF THE INVENTION 
     In view of the above, it is an object of the present invention to overcome the shortfalls in the related art by presenting an improved exercise apparatus. 
     An objective of the present invention is also to provide an exercise apparatus that facilitates performing an upper body workout. 
     Another objective of the present invention is to provide an exercise apparatus that is compatible with other exercise machines to facilitate performing a full-body workout that optimizes calorie burning efficiency. 
     A further objective of the present invention is to provide an exercise apparatus that is portable and adaptable to be easily attached to and detached from a separate conventional exercise machine, such as a stationary bike or treadmill. 
     Yet another object of the present invention is to provide an exercise apparatus with adjustable resistance function, allowing for resistance variability. 
     The exercise apparatus according to the present invention comprises a base frame, a pair of handlebars in pivotal communication with the base frame, a clamp sub assembly for attaching the apparatus to a free-standing exercise machine, such as a stationary bike or treadmill, and a brake sub assembly for providing resistance against movement of the handlebars. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is front view of an embodiment of the present invention. 
         FIG. 2  is a perspective view of an embodiment of the present invention. 
         FIG. 3A  is an exploded view of an embodiment of the present invention. 
         FIG. 3B  is an exploded view of a portion of an embodiment of the present invention, showing a portion of a handlebar, a handlebar connector, a brake sub-assembly, a clamp sub-assembly, and portion of the base frame of an embodiment of the present invention. 
         FIG. 4  is a perspective view showing the brake sub-assembly of an embodiment of the present invention. 
         FIG. 5  is an exploded view showing the brake sub-assembly of an embodiment of the present invention. 
         FIG. 6  is a side view of a clamp sub-assembly of an embodiment of the present invention. 
         FIG. 7  is a perspective view of a clamp sub-assembly of an embodiment of the present invention. 
         FIG. 8  is an exploded view of a clamp sub-assembly of an embodiment of the present invention. 
         FIG. 9  is a perspective view of a handlebar connecter of an embodiment of the present invention. 
         FIG. 10  is a perspective view of a pair of resistance dials of an embodiment of the present invention. 
         FIG. 11  is a perspective view of a flywheel of an embodiment of the present invention. 
         FIG. 12  is a side view of a dial drive shaft of an embodiment of the present invention. 
         FIG. 13  is a perspective view of a top clamp of an embodiment of the present invention. 
         FIG. 14  is perspective view of a bottom clamp of an embodiment of the present invention. 
         FIG. 15  is a side view of a magnet holder of an embodiment of the present invention. 
         FIG. 16  is a perspective view of a magnet holder of an embodiment of the present invention. 
         FIG. 17  is a side cross section view of a brake sub-assembly of an embodiment of the present invention. 
         FIG. 18  is a front cross section view of a brake sub-assembly of an embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION 
     The following detailed description is merely exemplary in nature and is not intended to and should not be interpreted to limit the embodiments described herein. Although particular embodiments are described, those embodiments are merely exemplary implementations of the system of the present invention. The following descriptions and illustrations herein should be considered illustrative in nature, and thus, not in any way limiting the scope of the present invention. One skilled in the art will recognize other embodiments are possible and all such embodiments are intended to fall within the scope of the present disclosure. While the preferred embodiments are described with reference to the above drawings, there is no intent to limit the disclosure to the embodiments shown in the drawings or disclosed herein. Rather, the intent is to include all alternatives, modifications and equivalents that embody the spirit and scope of the disclosure. 
     It is also to be understood that the disclosure uses terminology for the purpose of describing particular embodiments and such terminology is not intended to be limiting. 
     Unless defined otherwise, all technical and scientific terms used in this disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which is applicable to this disclosure. 
     As will be apparent to those of skill in the art upon reading this disclosure, each of the embodiments described and illustrated herein has discrete components and features which may be readily separated or combined with features of any of the other possible embodiments without departing from the spirit and scope of the present disclosure. 
     Referring to the drawings more particularly by reference number, reference number  1  refers to an exercise apparatus in accordance with the present invention. The exercise apparatus  1  is designed for use as an attachment to exercise machines that lack any means for the user to perform an upper body workout. An illustrative exercise apparatus  1  of the present invention is shown in  FIG. 1 . 
     As shown in the embodiment illustrated in  FIG. 1 , the exercise apparatus  1  has a base frame  2  and two opposing handlebars  3 ,  4 . The base frame  2  and two opposing handlebars  3 ,  4  are formed of metal, preferably a metal such as aluminum. Other metals, stainless steel or other materials conventionally used to form exercise equipment may be suitable as well. The opposing handlebars  3 , 4  are pivotally mounted upon opposite ends of the base frame  2  and are actuated by the user grasping the respective handlebars  3 ,  4  and moving his or her arms in a substantially forward and reverse direction. 
     As further shown in  FIG. 1 , two identical clamp sub-assemblies  5  are provided, one at each opposing end of the base frame  2 , to facilitate attachment of the exercise apparatus  1  to a standard exercise machine, such as a treadmill or stationary bike (not shown). The clamp sub-assembly  5  is preferably formed of a thermoplastic, such as polycarbonate/acrylonitrile butadiene styrene (PC-ABS). With reference to  FIGS. 6-8 , the clamp sub-assembly  5  includes a bar clamp connector  8  having a channel  9  through which the base frame  2  is received to hold the clamp sub-assembly  5  in place and to secure it to the base frame  2 . As shown in  FIG. 3B , the bar clamp connector  8  has an aperture  37  that, when the exercise apparatus  1  is fully assembled as shown in  FIG. 2 , corresponds to a threaded bore  39  in the base frame  2  and through which a screw  38  may be screwed to secure each clamp sub-assembly  5  to the base frame  2 . It is also possible that other known connecting devices or methods, such as adhesives or clamps may be used to secure the clamp sub-assemblies  5  to the base frame  2 . Further, although the preferred embodiment shown in  FIGS. 1 and 2  comprises two clamp sub-assemblies  5 , any number of clamp sub-assemblies  5  (i.e., one or more) may be employed provided they firmly secure the exercise apparatus  1  to the separate exercise machine. 
     As also shown in  FIGS. 6-8 , each clamp sub-assembly  5  further comprises a top clamp  10  and bottom clamp  11 , which operate together to attach or clamp the exercise apparatus  1  to a separate exercise machine. The top clamp  10  and bottom clamp  11  are provided with dowel pin apertures  12 ,  13 ,  14 , through which a dowel pin  36  is inserted to hold the top clamp  10  and bottom clamp  11  in place. The clamp sub-assembly  5  further comprises a threaded rod end bolt  15  for adjusting the clamping forces applied by the top and bottom clamps  10 ,  11 . The top clamp  10  is provided with an additional pair of dowel pin apertures  16 ,  16 ′. A dowel pin  36 ′ is inserted through these additional dowel pin apertures  16 ,  16 ′ and a corresponding aperture  17  of the rod end bolt  15 , thus securing the rod end bolt  15  to the top clamp  10 , as shown in  FIG. 7 . As shown in  FIGS. 7 and 8 , the distal end of the rod end bolt  15  is slotted through a slot  41  (shown in  FIG. 14 ) in a lip portion of the bottom clamp  11 . A fastener  18 , preferably a nut (as shown in  FIG. 8 ), engages the distal end of the rod end bolt  15  and can be adjusted by rotating in a clockwise or counterclockwise manner to alternatively tighten or loosen the top clamp  10  and bottom clamp  11 . Adjusting the fastener  18  to tighten the top clamp  10  and bottom clamp  11 , results in the application of the necessary clamping force to secure the exercise apparatus  1  to a separate exercise machine. The design of the clamp sub-assembly  5 , specifically the adjustability of the bottom clamp  11  relative to the top clamp  10  as described herein, advantageously allows the exercise apparatus  1  to be secured to exercise machine parts of various sizes. When the fastener  18  is removed entirely, the bottom clamp  11  can be adjusted into an open position to allow the clamp sub-assembly  5  to engage a part of a separate exercise machine, such as the handlebars of a stationary bike for example, to which the exercise apparatus  1  will be attached. The bottom clamp  11  can then be repositioned into a closed position, as shown in  FIGS. 6 and 7 , and the fastener  18  may be re-engaged with the rod end bolt  15  and tightened to secure the clamp sub-assembly  5  firmly to the separate exercise machine. 
     In the embodiment shown in  FIGS. 6-8 , the top clamp  10  is secured to the bar clamp connector  8  by means of a brass-fit expansion insert  19 ′ that at one end is inserted into an aperture (not shown) in the bar clamp connector  8 . The opposite end of the brass-fit expansion insert  19 ′ is inserted into a hole  20  on the top surface of the top clamp  10 . A threaded button-head cap screw  30 ′ is screwed into the brass-fit expansion insert  19 ′ to securely affix the bar clamp connector  8  to the top clamp  10 . It should be understood other suitable connecting devices may be used to attach the bar clamp connector  8  to the top clamp  10 . As also shown in  FIGS. 6 and 8 , thin foam pads  48 ,  49  may also be adhered to the bottom clamp  11  and top clamp  10 , respectively, to provide a secure and tight clamp to the separate exercise machine and to prevent damage to the separate exercise machine. Any known adhesive, such as glue, may be used to adhere the foam pads  48 ,  49  to the clamp sub-assembly. 
     Turning now to  FIGS. 1, 2, 3A and 9 , a handlebar connector  7  is shown, one of which is mounted at each opposite end of the exercise apparatus  1 . The handlebar connectors  7  are preferably formed of a thermoplastic, such as PC-ABS. Each handlebar connector  7  may advantageously be formed as a one-piece integral unit, as shown in  FIG. 9 , having a channel  44  through which the brake sub-assembly  6  is received and a second channel  21  through which a corresponding handlebar  3 ,  4  is received. Referring to  FIGS. 3B and 9 , each handlebar connector  7  is provided with small holes  22 ,  23  through which a connector, such as a flat head Phillips screw  43 ,  43 ′, may be inserted and then screwed into a threaded bore in the respective handlebar  3 ,  4  to secure the respective handlebar  3 ,  4  to the corresponding handlebar connector  7 . One skilled in the art would understand other known devices and methods of securing the handlebars  3 ,  4  to the corresponding handlebar connectors  7  may be employed, such as rivets, adhesives, and the like. 
       FIGS. 1-3A  show the right and left handlebars  3 ,  4  of a preferred embodiment of the invention. As shown in  FIG. 2 , the respective handlebars  3 ,  4  may advantageously be fitted with handlebar grips  3 ′,  4 ′ to provide additional grip for the user when operating the exercise apparatus  1 . The handlebar grips  3 ′,  4 ′ may be formed of any suitable material, such as NPVC foam. 
     With reference to  FIGS. 3A and 4 , the exercise apparatus  1  further comprises a pair of identical brake sub-assemblies  6  affixed at opposing ends of the base frame  2  and designed to support the respective handlebars  3 ,  4  in a substantially upright and fixed range of positions and to further provide adjustable rotational resistance of the handlebars  3 ,  4 . As shown in  FIGS. 1-3B , each opposing end of the base frame  2  is slotted through one of the bar clamp connector channels  9 , further inserted into the open side of a corresponding brake sub-assembly  6  and secured to the corresponding brake sub-assembly  6  using two screws  43 ,  43 ′. 
     Each brake sub-assembly  6  of the preferred embodiment shown in  FIGS. 4 and 5  comprises a nylon bearing  24 , a resistance dial  25 , a pair of magnet holders  26 ,  27 , a flywheel  28 , a dial drive shaft  29 , a brass press-fit expansion insert  19 , a push-on external retaining ring  31 , and magnets  32 . As shown in  FIGS. 2, 3A, 3B, 11 and 18 , when the handlebar connector  7  is secured in place over the corresponding brake sub assembly  6 , a threaded button-head cap screw  30  is inserted through a hole (not shown) in the handlebar connector  7  and further through a slot  34  in the nylon bearing  24  and finally screwed into a threaded hole  33  in the corresponding flywheel  28  (see  FIG. 11 ), thereby affixing the handlebar connector  7  to the corresponding flywheel  28 . With the handlebar connectors  7  thusly secured to the corresponding flywheels  28  and with the handlebars  3 ,  4  each secured to a respective handlebar connector  7 , as described above, each handlebar  3 ,  4  can be moved by the user in a substantially forward and rearward direction in concert with the rotation of the corresponding flywheel  28 . The handlebar connector  7  and flywheel  28  rotate together, but independently of the rest of the brake sub-assembly  6 , limited only by the slot  34  length in the nylon bearing  24 . 
     As shown in  FIGS. 5 and 17 , the brake sub-assembly comprises a central flywheel  28  made of electrically conductive material, preferably a metal such as aluminum. A hole  35  is provided in the flywheel  28  through which the dial drive shaft  29  is received. In the preferred embodiment shown in  FIG. 5 , the two magnet holder plates  26 ,  27  each hold five high strength Neodymium magnets  32 . Although the preferred embodiment comprises five high strength Neodymium magnets  32  in each magnet holder plate  26 ,  27 , one skilled in the art would understand the present invention may employ any number of magnets and may alternatively further employ other types of magnets of similar strength to Neodymium. Referring to  FIGS. 15 and 16 , the two magnet holder plates  26 ,  27  each have a central thread  42  cut either clockwise and counterclockwise, respectively, that corresponds to threads on the drive shaft  29 . Further, linear grooves in the inside of the nylon bearing  24  prevent the magnet holder plates  26 ,  27  from rotating, but allow the magnet holder plates  26 ,  27  to move laterally (i.e., closer together or further apart) within the nylon bearing  24 . The drive shaft  29  (shown in  FIG. 12 ) is attached to the resistance dial  25 , which may be actuated by the user to adjust the resistance of the handlebar  3 ,  4  movement. In the preferred embodiment shown in  FIG. 5 , the drive shaft&#39;s distal end  46  (shown in  FIG. 12 ) is threaded and may be screwed into a brass press-fit expansion insert  19  that is, in turn, inserted into an aperture  40  in the resistance dial  25  (shown in  FIG. 10 ), thus securing the drive shaft  29  to the resistance dial  25 . As the user turns the resistance dial  25 , the drive shaft  29  is rotated and causes the space between the magnet holder plates  26 ,  27  to increase or decrease depending on the direction of the resistance dial  25  rotation. The magnets  32  create a magnetic field between the magnets  32  on the respective opposing magnet holder plates  26 ,  27 , the strength of which is increased or decreased depending on the distance between the magnet holder plates  26 ,  27 . In use, the flywheel  28  is rotated in relation to the magnets  32  passing through the various magnetic fields, thereby resulting in a magnetic friction force that is relative to the speed of the flywheel  28  movement and the magnetic field strength. This magnetic friction force causes a braking effect that creates a feeling of resistance to the user as the user moves the handlebars  3 ,  4  in a substantially forward or rearward direction. Accordingly, manipulation of the resistance dial  25  increases or decreases the rotational resistance of the flywheel  28 , thus increasing or decreasing the force required to move the handlebars  3 ,  4  in a substantially forward and reverse direction. As shown in shown in  FIGS. 4 and 5 , the proximal end  46  (shown in  FIG. 12 ) of the drive shaft  29  protrudes through an opening  47  in the nylon bearing  24  and engages a push-on external retaining ring  31  that helps secure the drive shaft  29  in place. 
     Having described the preferred embodiment of the present invention, any number of changes, variations and improvements which may be apparent to those skilled in the art are within the scope of the invention claimed and described herein. For example, the manner in which the various components of the present invention are attached to one another is not limited to the particular manner described above. As various changes could be made in the above constructions without departing from the scope of the invention, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not limiting in any manner.