Patent ID: 6142261
Filing Date: 2000-11-07
Classification: A47D

Abstract:
A reverse-preventing structure for a baby walker comprising a reverse preventing wheel for mounting between a pair of spaced wheel support bases of a lower baby walker frame, said reverse preventing wheel including:an inner tray adapted to be affixed to a respective one of the wheel support bases, said inner tray having an opening formed centrally therein and a protruding annulus extending from a side thereof, said annulus having a substantially angularly-shaped recess formed therein, said recess having a an arched portion;a movable catch block disposed in said recess and having a trapezoidal shape; and,an outer casing having an axle extending from a central portion thereof inserted into said opening of said inner tray for rotatably mounting said outer casing to said inner tray, said outer casing having an annular wall substantially concentrically overlaying said annulus of said inner tray and a plurality of ratchet teeth encircling an inner surface of said annular wall, said movable catch block having a longer inclined side disposed adjacent said ratchet teeth, whereby said outer casing freely rotates relative to said inner tray in a first direction and rotation of said outer casing in an opposing second direction is prevented by said movable catch block becoming lodged between said arched portion of said recess and a respective one of said ratchet teeth.