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. 11, 1992
Filed:
Dec. 18, 1990
John P O'Loughlin, Mesa, AZ (US);
Conrad M Novak, Mesa, AZ (US);
TRW Inc., Lyndhurst, OH (US);
Abstract
An inflator generates gas for inflating a vehicle occupant restraint. The inflator comprises a housing. The housing has a chamber for gas generating material and gas outlet openings through which gas flows from the housing into the restraint. A filter in the housing provides a gas flow path to the gas outlet openings. The filter filters and cools the gas as it flows in the gas flow path. The filter comprises a plurality of filter layers. At least one of the filter layers has a higher resistance to gas flow than at least one other of the filter layers. The filter layer of higher resistance to gas flow has a portion extending between and engaging the housing and the other filter layer to provide a gas flow sealing zone adjacent the housing. The gas flow sealing zone has a resistance to gas flow higher than the resistance to gas flow of the gas flow path.