Exercising machine with adjustable stride length and height

Abstract

An exercising machine includes a base frame, a rotary member, left and right rocker link units, left and right foot pedals, left and right cross links, and left and right coupling units. The rotary member is mounted rotatably on the base frame. Each of the left and right rocker link units is coupled pivotably to the base frame. The left and right foot pedals are coupled pivotably and respectively to the left and right rocker link units. Each of the left and right cross links has a length that is adjustable, is coupled pivotably to the rotary member, and is coupled pivotably to a respective one of the left and right rocker link units.

1 . An exercising machine, comprising:
 a base frame;   a resistance-imparting rotary member mounted rotatably on said base frame;   left and right rocker link units, each of which is coupled pivotably to said base frame and each of which has a plurality of engaging segments disposed along the length thereof;   left and right foot pedals, each of which is coupled pivotably to a respective one of said left and right rocker link units;   left and right cross links, each of which is coupled pivotably to said rotary member; and   left and right coupling units, each of which couples pivotably a respective one of said left and right cross links to a selected one of said engaging segments of the respective one of said left and right rocker link units;   wherein the length of each of said left and right cross links is adjustable.   
     
     
         2 . The exercising machine as claimed in  claim 1 , wherein each of said left and right cross links includes a front cross link member, and a rear cross link member that is coupled telescopically to said front cross link member. 
     
     
         3 . The exercising machine as claimed in  claim 2 , wherein said front cross link member of each of said left and right cross link has a plurality of engaging segments that are disposed along the length thereof, the exercising machine further comprising left and right securing members, each of which is operable so as to secure said rear cross link member of the respective one of said left and right cross links to a selected one of said engaging segments of said front cross link member of the respective one of said left and right cross links. 
     
     
         4 . The exercising machine as claimed in  claim 3 , wherein each of said engaging segments of said front cross link member of each of said left and right cross links is formed with an engaging hole, each of said left and right securing members including a screw that extends through the rear cross link member of the respective one of said left and right cross links and that engages threadedly said engaging hole in the selected one of said engaging segments of said front cross link member of the respective one of said left and right cross links. 
     
     
         5 . The exercising machined as claimed in  claim 1 , wherein each of said left and right coupling units includes
 a pivoting member,   a pivot joint that interconnects the respective one of said left and right cross links and said pivoting member,   a pair of arms that extend from said pivoting member and that clamp the selected one of said engaging segments of the respective one of said left and right rocker link units, and   a fastening member that is operable so as to fasten releasably said arms to the selected one of said engaging segments of the respective one of said left and right rocker link units.   
     
     
         6 . The exercising machine as claimed in  claim 1 , wherein said base frame includes front and rear frame members, and an intermediate frame member that interconnects said front and rear frame members, and that is disposed between said left and right rocker link units, each of said left and right rocker link units being coupled pivotably to said intermediate frame member of said base frame. 
     
     
         7 . The exercising machine as claimed in  claim 1 , further comprising left and right handle units, each of which is coupled to the respective one of said left and right rocker link units so as to be co-rotatable therewith, each of said left and right handle units including
 a handle holder that extends from the respective one of said left and right rocker link units,   a handle that is coupled pivotably to said handle holder, said handle being pivotable relative to said handle holder to a selected one of angular positions, and   a retaining member that is operable so as to retain the handle to the selected one of the angular positions.   
     
     
         8 . The exercising machine as claimed in  claim 1 , wherein said base frame is adapted to be disposed on a flat surface, each of said left and right cross links forming an angle relative to the flat surface that is greater than zero.