Athletic apparatus having adjustable track

Abstract

An athletic apparatus includes a supporting base, a pair of tracks disposed on the supporting base and tilted relative to the supporting base, two foot support slidably attached onto the tracks, a transmitting device coupled between the foot supports for guiding the foot supports to move alternatively relative to each other, and a resistive device coupled to the foot supports for applying a resistive force to the foot supports. The transmitting device includes two rollers engaged onto a spindle, and two belts are coupled between the foot supports and engaged with the rollers for rotating the spindle in an active direction when the foot supports are stepped along the track by the user.

I claim: 
     
         1 . An athletic apparatus comprising:
 a supporting base including a column extended upwardly from a front portion of said supporting base,   two tracks disposed on said supporting base and tilted relative to said supporting base, and said tracks including a curved and non-linear structure having rear ends located below front ends of said tracks, and said rear ends of said tracks being spaced farther away from each other then said front ends of said tracks,   a first foot support and a second foot support slidably attached onto said tracks and movable up and down along said tracks respective,   a transmitting device coupled between said first and said second foot supports for guiding said first and said second foot supports to move up and down along said tracks and to move alternatively relative to each other, and   a resistive device coupled to said first and said second foot supports for applying a resistive force to said first and said second foot supports.   
     
     
         2 . The athletic apparatus as claimed in  claim 1 , wherein said transmitting device includes a spindle rotatably attached to said column, a first roller and a second roller engaged onto said spindle and rotatable unidirectionally relative to said spindle, a first belt coupled between said first and said second foot supports and engaged with said first roller for coupling said first and said second foot supports together and for rotating said spindle in an active direction when said first foot support is stepped downwardly along said track, and a second belt coupled between said foot supports and engaged with said second roller for rotating said spindle in the active direction when said second foot support is stepped downwardly along said track. 
     
     
         3 . The athletic apparatus as claimed in  claim 2 , wherein said transmitting device includes a first follower and a second follower disposed beside said second roller and engaged with said second belt for allowing said spindle to be rotated by said second roller and said second belt in the active direction when said second foot support is stepped downwardly along said track. 
     
     
         4 . The athletic apparatus as claimed in  claim 2 , wherein said resistive device includes a flywheel attached to said spindle and rotated in concert with said spindle for applying a resistive force to said spindle and said first and said second foot supports. 
     
     
         5 . The athletic apparatus as claimed in  claim 4 , wherein said resistive device includes an idle wheel rotatably attached to said supporting base and having a shaft coupled to said flywheel with a strap for allowing said idle wheel to be rotated by said flywheel and said spindle. 
     
     
         6 . The athletic apparatus as claimed in  claim 5 , wherein an electric generator is attached to said supporting base and coupled to said shaft of said idle wheel for allowing said electric generator to be rotated by said idle wheel and to generate an electric energy. 
     
     
         7 . The athletic apparatus as claimed in  claim 5 , wherein a resistive device is attached to said supporting base and located beside said idle wheel for braking said idle wheel. 
     
     
         8 . The athletic apparatus as claimed in  claim 1 , wherein said first and said second foot supports each include a carrier slidably attached onto said track and movable up and down along said track respectively, and a plate pivotally attached to said carrier and pivotable relative to said carrier to selected angular positions. 
     
     
         9 . The athletic apparatus as claimed in  claim 1 , wherein said tracks each include two parallel beams having front ends attached to a common linking member which is pivotally attached to said column, and having rear ends coupled together with a second linking member for forming a parallelogramic structure. 
     
     
         10 . The athletic apparatus as claimed in  claim 1  further comprising a coupling mechanism coupling said rear ends of said tracks together. 
     
     
         11 . The athletic apparatus as claimed in  claim 10 , wherein said coupling mechanism includes an arm pivotally attached to said supporting base, said arm includes two end portions pivotally coupled to said rear ends of said tracks with coupling stems respectively for allowing said rear ends of said tracks to be moved toward and away from each other when said arm is rotated relative to said supporting base. 
     
     
         12 . The athletic apparatus as claimed in  claim 10 , wherein said supporting base includes a panel having an aperture formed therein, and a spring biased latch attached to said arm and engageable with said aperture of said panel for anchoring said arm to said supporting base at a selected angular position. 
     
     
         13 . The athletic apparatus as claimed in  claim 1  further comprising a handle mechanism attached to said column for supporting an upper portion of a user. 
     
     
         14 . The athletic apparatus as claimed in  claim 13 , wherein said handle mechanism includes two handle members pivotally coupled to said column with levers for forming a parallelogramic structure and for allowing said handle members to be pivoted and adjusted up and down relative to said column. 
     
     
         15 . The athletic apparatus as claimed in  claim 14 , wherein said handle mechanism includes two handle bars attached to said handle members respectively. 
     
     
         16 . The athletic apparatus as claimed in  claim 14 , wherein said column includes a board having a cavity formed in said board, and a spring biased catch is attached to one of said levers and engageable with said cavity of said board for anchoring said levers to said column at a selected angular position.