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. 14, 1992
Filed:
Sep. 13, 1990
Hironori Sasaki, Aichi, JP;
Yoshihiro Oka, Aichi, JP;
Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho, Aichi, JP;
Abstract
A tension reducer for use in a webbing retractor having a webbing take-up spindle for winding a webbing thereon having two types of flat spiral springs, one with strong and the other with weak resilient characteristics connected in series to each other through a gear wheel is urged in a webbing winding direction. The gear wheel is locked to avoid the urging force of the strong flat spiral spring on an occupant. The tension reducer comprises inertial mass bodies movable when the gear wheel is unlocked and a C-shaped friction spring whose diameter is enlarged by the movement of the inertial mass bodies for avoiding an abrupt rotation of the gear wheel relative to the take-up spindle. Thus, the abrupt tension of the strong flat spiral spring is prevented so that the occurrence of an improper sound is reduced.