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:
Sep. 12, 1978
Filed:
Apr. 27, 1977
Avraham Ziv, Sepulveda, CA (US);
American Safety Equipment Corporation, Encino, CA (US);
Abstract
A safety belt retractor has an extended low tension range dual tensioning and rewind means including a reel rewind spring means for biasing the reel in a belt rewind direction under the urging of a first bias, tension reducing means for providing a second rewind bias of a lower value on said reel than the first bias to provide a reduced tension on a safety belt, activating means for activating the tension reducing means in response to reel rotation in a predetermined manner and means for deactivating such tension reducing means in response to reel rotation under the urging of the second bias including the provison of a spiral cam surface mounted to the retractor frame and presenting a spiral surface having an extent of more than one whole revolution about a spiral center, a cam follower provided to be moved along the spiral surface, means for driving the cam follower along such cam surface in response to rotation of the reel and means operated by radial displacement of the cam follower relative to the spiral center due to travel of more than one full revolution of the follower about such center for deactivating the tension reducing means.