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. 16, 1999
Filed:
May. 13, 1997
Barney J Bauer, Fenton, MI (US);
Kevin M Gillis, Shelby Township, MI (US);
Louis R Brown, Oxford, MI (US);
TRW Vehicle Safety Systems Inc., Lyndhurst, OH (US);
Abstract
An apparatus (40) for pretensioning seat belt webbing (16) which is extensible about an occupant of a vehicle seat (14) includes a housing (70) having a fluid chamber (90) and an actuatable pyrotechnic device (150) in fluid communication with the fluid chamber. An actuatable venting mechanism, such as a pyrotechnic plug (160), when actuated, opens a vent opening (96) to enable venting of fluid from the fluid chamber (90). A controller (190) is operatively connected to the pyrotechnic device (150) and to the venting mechanism (160) for controlling the actuation of the pyrotechnic device and of the venting mechanism. The controller (190) actuates only the pyrotechnic device (150) to provide a first pretensioning output level and, alternatively, actuates both the pyrotechnic device (150) and the venting mechanism (160) to provide a second pretensioning output level.