Patent ID: 7458923

Claim:
A riding trainer apparatus comprising: a foundation having a grounding support and a standing support; a drive motor affixed at a desired height on said standing support, said drive motor having a worm-driven portion at power output end thereof; a drive gear screwed onto the standing support, said first drive gear having a tip edge coupled to said worm-driven portion of said drive motor, said first drive gear having a first drive wheel eccentrically arranged at one side thereof; a vertical rocker having a shaft support with a bottom fastened to said foundation so as to allow said vertical rocker to swing horizontally, said vertical rocker having a limit guide portion on one side thereof so as to correspond to the said first drive wheel, said vertical rocker having a top protruding to a predefined location over said first drive gear; a swinging seat frame having a middle section screwed onto said top of said vertical rocker so as to allow said swinging seat frame to swing vertically; a second drive gear flexibly screwed onto said standing support, said second drive gear drivable by said first drive gear by a drive gear set such that said second drive gear rotates synchronously with said first drive gear, said second drive gear having a second drive wheel eccentrically positioned on one side thereof; a vertical guide set having a positioning base and a guide base and a slide bar and a latch rod, said positioning base suitable for positioning said vertical guide set, said guide base having a groove receiving said second drive wheel, said slide bar passing through a punch hole in said positioning base, said slide bar having top linked to said latch rod and bottom linked to said guide base, one side of said top of said latch rod corresponding to said swinging seat frame being freely linked; and a free wheel positioned on one side of said top of said latch rod, said swinging seat frame having a C-shaped groove receiving said free wheel therein so as to form a flexible linkage.