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:
Jan. 05, 1993
Filed:
Sep. 18, 1991
Applicant:
Inventor:
Shunichi Ito, Tokyo, JP;
Assignee:
GearTech Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F03G / ;
U.S. Cl.
CPC ...
185 39 ; 185D / ; 446464 ;
Abstract
The present invention is concerns with a spring drive used as a driving power source for a moving toy. The spring drive has a windup pinion of which at least the top of one end is formed at its rotation axis as a small diameter end having a diameter smaller than the diameter of the body thereof, and a supporting member having a supporting surface for supporting the windup pinion at the small diameter end. The windup pinion is freely rotatively supported at its small diameter end on the supporting surface of the supporting member, the friction force acting against the rotation of the pinion, is decreased.