Exerciser having a tiltable and adjustable structure

Abstract

An exerciser includes a post pivotally secured on a base and movable either forward or rearward to simulate a down hill riding exercising or an upward climbing exercising. A lever has one end pivotally secured to the post, and the other end coupled to a foot pedal-and-crank actuated spindle via a gear transmission. A rotatable flywheel is coupled to the spindle. A resistive strap is partially engaged over the flywheel and coupled to the post so as to be released from and to be further forced against the flywheel when the post is rotated forward and rearward.

I claim:  
     
         1 . An exerciser comprising: 
 a base,    a post including a lower portion pivotally secured on said base with a pivot axle, for allowing said post to move either forward or rearward to simulate a down hill riding exercising or an upward climbing exercising,    a seat cushion supported on said post, and    means for rotating said post forward and rearward about said pivot axle, to simulate the down hill riding exercising and the upward climbing exercising.    
     
     
         2 . The exerciser according to  claim 1  further comprising a barrel secured to said post for supporting said seat cushion.  
     
     
         3 . The exerciser according to  claim 2 , wherein said seat cushion includes a seat tube secured in said barrel, for supporting said seat cushion on said barrel of said post.  
     
     
         4 . The exerciser according to  claim 2 , wherein said post includes a shank extended rearward therefrom, said barrel is secured on said shank for supporting said seat cushion.  
     
     
         5 . The exerciser according to  claim 1 , wherein said post includes a handle provided thereon for supporting an upper portion of a user.  
     
     
         6 . The exerciser according to  claim 1 , wherein said rotating means includes a lever having a first end pivotally secured to said post, and having a second end, and means for actuating said second end of said lever to rotate said post about said pivot axle.  
     
     
         7 . The exerciser according to  claim 6 , wherein said actuating means includes a spindle rotatably supported on said base, means for coupling said spindle to said second end of said lever, and means for forcing said spindle to actuate said second end of said lever to rotate said post about said pivot axle.  
     
     
         8 . The exerciser according to  claim 7 , wherein said forcing means includes a pair of cranks secured to said spindle, and a pair of foot supports secured to said cranks for rotating said spindle.  
     
     
         9 . The exerciser according to  claim 7 , wherein said coupling means includes a gear transmission coupled between said spindle and said second end of said lever.  
     
     
         10 . The exerciser according to  claim 9 , wherein said gear transmission includes a pinion secured on said spindle and rotated in concert with said spindle, a gear rotatably supported on said base with a pivot shaft and coupled to said pinion, said second end of said lever is rotatably secured to said gear and offset from said pivot shaft.  
     
     
         11 . The exerciser according to  claim 10 , wherein said gear transmission further includes at least one pair of pinion and gear rotatably supported on said base with a pivot rod and engaged with said gear and said pinion respectively.  
     
     
         12 . The exerciser according to  claim 9 , wherein said base includes a base frame disposed thereon for supporting said gear transmission.  
     
     
         13 . The exerciser according to  claim 12 , wherein said lower portion of said post is rotatably secured on said base frame with said pivot axle.  
     
     
         14 . The exerciser according to  claim 1  further comprising means for applying a resistive force against said post.  
     
     
         15 . The exerciser according to  claim 1  further comprising means for applying an changeable resistive force against said post.  
     
     
         16 . The exerciser according to  claim 15 , wherein said resistive force applying means includes a flywheel rotatably supported on said base, and a resistive strap partially engaged over said flywheel and having a first end secured to said base and a second end secured to said post, for allowing said resistive strap to be released from and to be further forced against said flywheel when said post is rotated forward and rearward about said pivot axle to simulate the down hill riding exercising and the upward climbing exercising.