Patent ID: 7204788

Claim:
A pedal stroke adjuster attachment for a device which is operated by manual turning of a pair of foot pedals about an axis of rotation wherein the pedals are attached to crank arms which extend in opposite radial directions relative to the axis of rotation and wherein each crank arm has a pedal engaging opening at a distal end of the arm for enabling fastening of a foot pedal to the crank arm, said stroke adjuster attachment comprising: a linear track member having an inner face positioned to extend along a crank arm and having an opposite outer face and having a fastener receiving passage to align with said pedal engaging opening of the crank arm, the track member further having a slot extending along said outer face thereof and having a plurality of detent seating openings which are spaced apart along said slot, a threaded fastener for insertion into said fastener receiving passage of said track member and for engagement in said opening of the crank arm to secure said attachment to said crank arm; a slider member engaged by the track member and which is movable along said slot and having a threaded passage for enabling fastening of a foot pedal to the slider member; a releasable detent carried by said slider member for engaging any selected one of said detent seating passages to hold said slider member at a selected location along said track member; the track member further having a pair of spaced apart parallel blades which extend outwardly from said inner face thereof and define therebetween a region configured to retain a portion of the crank arm, thereby preventing pivoting movement of said track member relative to said crank arm; wherein said fastener receiving passage is at a distal end of said track member, said blades are at a location which is spaced away from said distal end of the track member and the blades have parallel flat surfaces that face each other at opposite sides of an open region, and means extending from said flat surfaces for clamping said crank arm at a centered location in said region.