Patent ID: 6332513
Filing Date: 2001-12-25
Classification: B60B

Abstract:
A safety wheel of a baby's wheeled chair, comprising:(a) a support member, said support member being connected to a lower side of said wheeled chair;(b) a right wheel part, said right wheel part being rotatably connected to said support member;(c) a left wheel part, said left wheel part being connected to said right wheel part, said left wheel part having an elongated confining trench formed thereacross;(d) a ball, said ball being movably received in said elongated confining trench; and,(e) a side cover, said side cover having a round recess and a stopping part formed in said round recess, said side cover being connected to said support member with said round recess facing said left wheel part, said ball being capable of moving to a lower end portion of said confining trench due to gravity and subsequently being stopped by said stopping part of said side cover when said wheel rolls in a first direction, and said ball not being stopped by said stopping part when said wheel rolls below a predetermined speed in a second direction, said second direction being opposite said first direction.