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:
Apr. 19, 1983
Filed:
Aug. 10, 1981
John R Wildman, North Riverside, IL (US);
Howard J Morrison, Deerfield, IL (US);
Marvin Glass & Associates, Chicago, IL (US);
Abstract
A four wheel drive toy includes a drive mechanism and two pairs of elongated movable track portions mounted on a frame, each pair of track portions including a follower gear driven through an independent gear train from the drive mechanism. An interior surface of each track portion includes an oval endless rack gear engaged by the gear follower. The orbit of the gear follower around the rack gear is made visible from the exterior of the vehicle by using flanges attached to either side of the follower gear to retain the follower gear within the interior of the track portion. The track portion pivots about the axis of the follower gear when the follower gear reaches the arcuate region of the oval rack gear.