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:
Dec. 26, 2000
Filed:
Aug. 20, 1998
Rouben T Terzian, Chicago, IL (US);
Ali Nikkhah, Mission Viejo, CA (US);
Mattel, Inc., El Segundo, US;
Abstract
A four-legged walking toy includes a body supported by four pivotally secured legs and a drive mechanism operative upon the legs which includes a pair of mirror image drive units each having three elliptical gears therein. The center elliptical gears of each drive unit are coupled in a one hundred eighty degree phase relationship to offset the operation of left legs from right legs correspondingly. A plurality of frictional members are positioned on the underside of the animal hooves to provide frictional engagement as the walking toy is pushed across a suitable surface. The rearward movement of each forwardly extended leg couples rotational power through the elliptical gear mechanisms to the remaining legs to provide a realistic motion profile.