Wheel device for a baby walker

Details Wheel device for a baby walker Wheel device for a baby walker

1998-07-24

2000-06-06

Butler, Douglas C.

Brakes

To retard rolling of caster

188 8284, 16 24, 280 87051, B60B 3300

Patent

active

060707011

ABSTRACT:
A wheel device for a baby walker provided on the bottom surface of a chasis of the baby walker, it is comprised of a first semi-sphere provided with a fixing portion fixed on the bottom surface of the chasis; a second semi-sphere exactly closely covering the first semi-sphere and rotating on the ground relative to the first semi-sphere, and forming with the first semi-sphere a spherical receiving space; a stop piece provided in the receiving space, a slide way with a variable width is formed between the stop piece and the inner wall of the second semi-sphere; a roller provided on the slide way and contacting the inner wall of the second semi-sphere; thereby when the wheel is rolled and accelerated to a predetermined speed, by the friction force between the roller and the stop piece and the second semi-sphere, the roller is moved toward a narrower area of the slide way, and is limited to the area between the second semi-sphere and the stop piece, so that said wheel gets the function of speed reducing as well as braking.

REFERENCES:
patent: 1864142 (1932-06-01), Meyer
patent: 3075232 (1963-01-01), Rice et al.
patent: 3623575 (1971-11-01), Schiltigheim et al.
patent: 5785154 (1998-07-01), Chen

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