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:
Jul. 18, 1989
Filed:
Dec. 04, 1987
Mikio Uchida, Yamato, JP;
Akihiro Ishida, Fujisawa, JP;
NSK-Warner Kubushiki Kaisha, Tokyo, JP;
Abstract
A ribbon spring for use in a sprag-synchronized one-way clutch includes a metal thin plate which is formed with a plurality of sprag insertion holes of a predetermined shape preferably defined by stamping. In one embodiment, the sprag insertion hole is generally E-shaped as defined by a pair of tabs substantially identical in shape and size which extend into the sprag insertion hole from one side edge thereof. In another embodiment, the sprag insertion hole is generally C-shaped as defined by a relatively wide tab which extends into the sprag insertion hole from one side edge thereof and which is formed with a slot. With these structures, the sprag is prevented from wobbling or skewing during operation and an optimal spring constant can be set easily.