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:
Aug. 25, 1981
Filed:
Feb. 11, 1980
Hubert P Blom, Royal Oak, MI (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A seat belt retractor has a winding spring biasing a belt reel in the belt winding direction to pull the belt taut about the occupant. A first inertia-sensing means is adapted to sense a predetermined level of vehicle deceleration and lock the belt reel against belt unwinding rotation to restrain the occupant in the seat. Ratchet teeth carried by the reel in the belt winding direction are selectively engageable by a detent member. A control means is operable to move the detent member to a detenting position engaging ratchet teeth to prevent winding of the reel and thereby relieve the belt tension on the occupant by establishing a slackened belt condition about the occupant. A second inertia-sensing means senses a predetermined level of vehicle deceleration less than the level sensed by the first inertia-sensing means and is adapted to move the detent member to the undetenting position to restore the winding effort of the winding spring and pull the belt taut against the occupant prior to locking of the belt reel against belt unwinding rotation by the first inertia-sensing means.