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:
Feb. 07, 1984
Filed:
Mar. 26, 1982
Jai H Chawla, Knoxville, TN (US);
Arduino Colasanti, East Detroit, MI (US);
Allied Corporation, Morris Township, Morris County, NJ (US);
Abstract
A rewind spring motor assembly, useful in a seat belt retractor, including a drive spool and an idler spool, and a rewind spring having a stretched S-shape between the spools. The spring has a normal use region extending from the drive spool towards the idler spool and includes a first portion having a first natural radius of curvature and a second portion having a second natural radius of curvature greater than the first natural radium of curvature. The transition between the first and second portions is defined by an abrupt increase in the natural radius of curvature. In use in a seat belt retractor, this abrupt increase results in an abrupt change in the extraction and retraction forces, so that a wearer definitely notices a reduced rewind force. Also, in the rewind mode, the abrupt increase in rewind force assists full stowing of the seat belt webbing on the retractor.