The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 06, 2000
Filed:
Jul. 24, 1998
Stephen Hu, Hsin-Chu Industrial Park, TW;
Other;
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.