Abstract:
A cable pull exercise bar consisting of a hammer curl handle pair, each handle among the hammer curl handle pair having a base end and having a pulling end, the handle pair defining a head clearance space which opens at the handles&#39; base ends; a cross beam spanning between and rigidly interconnecting the handles&#39; pulling ends; and a cable pull hook eye fixedly attached to the cross beam.

Description:
FIELD OF THE INVENTION 
   This invention relates to exercise equipment for use with cable pull exercise machines. More particularly, this invention relates to manually graspable pull handles which are attachable to cables of such machines. 
   BACKGROUND OF THE INVENTION 
   Cable pull exercise bars are commonly configured to facilitate exercise motions which are similar to those facilitated by commonly known free weight exercise bars. For example, the inversely angled hand grip sections of a free weight bicep curl bar are commonly identically reflected upon cable pull bars as inversely angled hand grip sections. However, where a free weight double hammer curl bar is adapted for cable pull work, typically by centrally welding a hook eye to a cross member, the base end cross member of such bar tends to interfere with performance of overhead double hammer curls, the lower cross bar undesirably contacting the exerciser&#39;s head upon repetitive hammer curling motion. 
   Another problem associated with commonly configured cable pull exercise bars is that different types of cable pull exercise bars are needed for performance of varying exercise motions. Duplication of cable pull exercise bars needed for facilitating varying exercise motions results in excess bulk of multiple bars utilized by an exerciser during an exercise session, loss or misplacement of exercise bars, excess materials cost, and lack of cost economies. 
   The instant inventive hammer curl cable pull exercise bar solves or ameliorates problems noted above by providing a cable pull exercise bar which facilitates double overhead hammer curl exercising motions without head contacting interference, and which is economically and compactly reconfigurable for facilitating varying cable pull exercise motions. 
   BRIEF SUMMARY OF THE INVENTION 
   A major structural component of the instant inventive cable pull exercise bar comprises a hammer curl handle pair, the handles of such pair having pulling ends and base ends, the pulling ends of such handles preferably being rigidly interconnected by a cross beam. Preferably, the handles in combination with the cross beam form a “U” bar, the cross beam preferably holding the handles in the parallel alignment which is necessary for facilitating double hammer curl exercising motions. Also preferably, such cross beam orients the handles eight inches to twelve inches apart. Suitably, the cross beam which interconnects the pulling ends of the handles may be alternately configured as a “V” bar or as a straight bar. 
   A cable attaching means is preferably fixedly attached to the cross beam at its midpoint, such means preferably comprising a hook eye. Alternately, such means may comprise a hook. Numerous other commonly known means for attaching flexible cables to objects may be suitably substituted for the preferred hook eye. 
   Where the inventive cable pull exercise bar is configured as described above, the handles advantageously define a head clearance space which opens at the base ends of the handle. In use of the inventive cable pull exercise bar, configured as described above and assuming that the exerciser attaches the bar to a cable pull exercise machine for performing double overhead hammer curl exercise motions, the exerciser raises the bar against cable weight resistance to shoulder level, holding the handles of such bar in either hand. Thereafter, the exerciser commences repeatedly performing overhead hammer curling exercising motions typically facing away from the machine, the base ends of the handles pointing substantially upward, and the hook eye of the bar pointing substantially downward toward a low pulley of the weight machine. Upon executing such repeated double overhead hammer curling exercise motions, the exerciser&#39;s head, or portions of the exerciser&#39;s head may pass through the head clearance space defined by the bar&#39;s handles without injury or interference. 
   For prevention of hand slippage, it is preferred that the handles of the above described cable pull exercise bar have a friction enhancing knurled or ridged surface. Also preferably, hand sliding stops are fixedly, and preferably removably, attached to the base ends of the handles of the bar. Means for attaching the slide stops to the handles preferably comprise helically threaded lug and aperture combinations. Suitably, the stops may be attached by sheer pin locked lug and sleeve joints. Also suitably, quick disconnect couplings may be utilized for interconnecting the hand stops and the handles. Also suitably, though less desirably, the hand stops may be formed wholly with the handles or may be fixedly attached by means of heat fusion welding. 
   Where the hand stop attaching means comprise the preferred helically threaded lug and aperture combinations, the hand stops and such attaching means advantageously further function for attachment of an exercise cross bar for performing double handed or single handed straight bar bicep curls. 
   Accordingly, it is an object of the instant invention to provide a cable pull exercise bar which is capable of facilitating double overhead hammer curling exercise motions in conjunction with a cable pull exercise machine, and without head inference. 
   It is a further object of the instant invention to provide such an exercise bar which is further capable of economical and compact configuration and reconfiguration for performance of varying cable pull exercising motions. 
   Other and further objects, benefits, and advantages of the present invention will become known to those skilled in the art upon review of the Detailed Description which follows, and upon review of the appended drawings. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is an isometric view of the instant inventive cable pull exercise bar. 
       FIG. 2  is a partial sectional view, as indicated in  FIG. 1 . 
       FIG. 3  is an isometric view of an alternate configuration of the cable pull exercise bar depicted in  FIG. 1 . 
       FIG. 4  is a partial sectional view, as indicated in  FIG. 3 . 
       FIG. 5  is an alternate sectional view, as indicated in  FIG. 3 . 
       FIG. 6  is a second alternate configuration of the cable pull exercise bar depicted in  FIG. 1 . 
       FIG. 7  is a partial sectional view as indicated in  FIG. 6 . 
   

   DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
   Referring now to the drawings, and in particular to  FIG. 1 , the instant inventive hammer curl cable pull exercise bar has a pair of substantially parallel handles  4  and  8 . The pulling ends of handles  4  and  8  are rigidly interconnected by a preferably “U” shaped cross beam section  2 . Handles  4  and  8  preferably respectively have knurled hand grip sections  6  and  10  for prevention of hand slippage. In order to further prevent hand slippage, hand slide stops  12  and  16  are preferably fixedly attached to the base ends of handles  4  and  8 . 
   Referring further to  FIG. 1 , in order to effectively attach the inventive cable pull exercise bar to an exercise machine, an attachment plate  22  having a hook eye  24  is preferably fixedly welded to the midpoint of the cross beam  2 , the hook eye  24  receiving a hook  26  attached to an end of a cable  28  extending to a cable weight machine (not depicted). 
   Referring further to  FIG. 1 , the handles  4  and  8  define a head clearance space  20 , such space opening at the base ends of said handles. In use of the inventive cable pull exercise bar configured as depicted in  FIG. 1 , for performing overhead double hammer curls resisted by a cable weight machine, an exerciser grasps knurled hand grip sections  6  and  10  of handles  4  and  8 . Upon executing overhead hammer curling exercising motions while so grasping the bar, the crown or back of the exerciser&#39;s head may conveniently pass through space  20  without injury or interference. 
   Referring simultaneously to  FIGS. 1 ,  2 , and  4  hand stops  12  and  16  are preferably removably and fixedly attached to the base ends of handles  4  and  8  by helically threaded lugs represented by lugs  30  and  56 . Such lugs preferably are formed wholly with hand stops  12  and  16 , and such lugs being mounted threadedly within, referring further to  FIG. 4 , a helically threaded apertures represented by cavity  60 , such apertures extending into the base ends of handles  4  and  6 . Preferably, rubber washers represented by washers  32  and  58  are disposed between stops  12  and  16  and the base end of handles  4  and  6 . Also preferably, the annular outer surfaces of stops  12  and  16  have multiplicities of friction enhancing ridges  14  and  18  for assistance with stop turning for lug loosening and tightening. 
   Referring simultaneously to  FIGS. 1–4 , counter-clockwise rotations of hand stops  12  and  16  withdraw helically threaded lugs  30  and  56  from their helically threaded apertures, represented by cavity  60 , within the base ends of handles  4  and  8 . Upon completion of withdrawals of hand stops  12  and  16 , lugs  30  and  56  may be extended through apertures  61 , represented by channel which extend perpendicularly through cross bar  34 . Thereafter, rubber washers  32  and  58  may be respectively placed over the ends of lugs  30  and  56  which protrude from said cross bar apertures. Thereafter, the ends of lugs  30  and  56  may be aligned with helically threaded apertures, represented by cavity  60 , within the base ends of handles  4  and  8 . Thereafter, clockwise rotations of hand stops  12  and  16  draw lugs  30  and  56  into said apertures, sandwiching the cross bar  34  and washers  32  and  58  between hand stops  16  and  12 , and the base ends of handles  4  and  8 . Upon completion of such clockwise rotation cross bar  34  is securely mounted upon and across said base ends. Preferably, lands  36  and  38  are milled into cross bar  34  at opposite ends of apertures  61  for stable seating of hand stops  16  and  12  and the base ends of handles  4  and  8 . 
   Referring simultaneously to  FIGS. 3 and 5 , the hand grip sections of cross bar  34  preferably comprise rotatable sleeves  40  and  44 , each such sleeve preferably having friction enhancing knurling  42  and  46 . Rotatable sleeves  40  and  44  are preferably mounted upon annularly coffered left and right ends of cross bar  34 , annular seams  47  and  43  between bar  34  and rotatable sleeves  40  and  44  coinciding with left and right annular coffered steps. Referring further simultaneously to  FIGS. 2 and 4 , hand stops  50  and  54  are preferably configured substantially identically with hand stops  12  and  18 , hand stops  50  and  54  having peripheral friction enhancing ridges  48  and  52 , and having helically threaded lugs represented by lugs  30 ,  56 , and  62 , such lugs being helically threadedly mounted within a helically threaded apertures extending into the left and right ends of cross bar  34 . In configuration depicted in  FIG. 3 , rotatable sleeves  40  and  44  are retained within and rotate within annular channels defined between annularly coffered steps  47  and  43  and the right and left faces of hand stops  50  and  54 . Cost economies and materials handling economies are achieved by configuring hand stops  12 ,  16 ,  50 , and  54  substantially identically along with the helically threaded channels which receive the helically threaded lugs of such hand stops. Attachment of cross bar  34  in the manner depicted in  FIG. 3  advantageously alternately configures the hammer curl bar of  FIG. 1  for performance of straight bar double bicep curls and double handed overhead pulls. 
   Referring simultaneously to  FIGS. 1 ,  6 , and  7 , a differently configured cross bar having a left segment  64  and having a right segment  68 , advantageously alternately facilitates single handed bicep curls and overhead pulls. A rotatable sleeve  67  having friction enhancing knurling  66  rotates upon and about the cross bar comprising segments  64  and  68  in a manner similar to, referring further to  FIG. 3 , that of sleeves  40  and  44  upon cross bar  34 . In assembling the cross bar of  FIG. 6 , segments  64  and  68  are separated from handles  4  and  8  and from hand stops  12  and  16  through counter clockwise rotation and withdrawal of such stops. Either the right end of segment  64  or the left end of segment  68  is annularly coffered, allowing rotatable sleeve  67  to be mounted over the annularly coffered section to rest upon and to be slidably retained by annularly coffered step  70  or  72 . The right end of segment  64  or the left end of segment  68  preferably comprises a leftwardly or rightwardly extending helically threaded lug  78  and aperture combination similar to those depicted in  FIGS. 2 and 4 . Upon rotatably mounting sleeve  67  within the annular channel defined by coffered steps  70  or  72 , the assembled cross bar is attached to the base ends of handles  4  and  8  in a manner substantially identical to the attachment steps discussed above with respect to cross bar  34  in  FIG. 3 . Referring to  FIG. 6 , hand stops  12  and  16  securely seat within lands  76  and  74 . For economy in materials acquisition and handling, rotatable sleeve  67  is preferably configured substantially identically with, referring to  FIG. 3 , sleeves  40  and  44 . 
   While the principles of the invention have been made clear in the above illustrative embodiment, those skilled in the art may make modifications in the structure, arrangement, portions and components of the invention without departing from those principles. Accordingly, it is intended that the description and drawings be interpreted as illustrative and not in the limiting sense, and that the invention be given a scope commensurate with the appended claims.