Training apparatus simulating skiing

Abstract

A training apparatus contains a base, a sliding unit, a cranking unit, and a linking unit. The sliding unit contains two connecting strips with treadles at the back ends. A first flexible link and a second flexible link are arranged in parallel and connected to the two connecting strips. The cranking unit contains a wheel supported axially by an end of a crank arm which rotates synchronously with the wheel. The linking unit contains a third flexible link connected between the other end of the crank arm and the front end of one of the connecting strips. By the resilience provided by the third flexible link, the lateral and reciprocal motions of the sliding unit are prevented from getting stuck at the dead spots.

1 . A training apparatus simulating skiing comprising:
 a base having a hollow frame erected vertically above a front end of said base, a rod erected vertically from the top edge of said frame, a handle on the top end of said rod, and two pivots between the bottom edge of said frame and said base;   a sliding unit having two parallel connecting strips pin-joined to said two pivots respectively in the front sections of said connecting strips, two treadles at the back ends of said connecting strips respectively, a first flexible link and a second flexible link arranged in parallel and joined to said connecting strips after and before said pivots respectively;   a cranking unit having a wheel laterally supported by its axle in front of said frame and a crank arm whose one end is joined to the axle of said wheel so that said crank arm rotates synchronously with said wheel; and   a linking unit having a third flexible link whose two ends are joined to the other end of said crank arm and the front end of one of said connecting strips;   wherein, when said connecting strips are moved from side-to-side synchronously by said first and second flexible links, said crank arm is rotated through said third flexible link; and the resilience of said third flexible link prevents said crank arm from getting stuck at dead spots.   
     
     
         2 . The training apparatus according to  claim 1 , wherein said first and second flexible links are selected from the group consisting of steel cables, rubber ropes, and springs. 
     
     
         3 . The training apparatus according to  claim 1 , wherein at least one of said first and second flexible links contains resilient elements provided between said base and said two connecting strips respectively. 
     
     
         4 . The training apparatus according to  claim 1 , wherein a damping wheel is engaged by a belt circulating said damping wheel and said wheel so as to provide resistance to the rotation of said wheel. 
     
     
         5 . The training apparatus according to  claim 1 , wherein said third flexible link is selected from the group consisting of a rubber rope and a spring. 
     
     
         6 . The training apparatus according to  claim 1 , wherein the connections of said third flexible link to said crank arm and one of said connecting strips are achieved by using bearings. 
     
     
         7 . The training apparatus according to  claim 1 , wherein a fourth flexible link has its two ends connected to the other end of said crank arm and an erective stick on said base respectively.