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. 08, 2005
Filed:
Jun. 30, 2003
Michael Eugene Kelley, Valrico, FL (US);
Anthony J. Curtis, Palm Harbor, FL (US);
Michael Felix Mulville, Bartow, FL (US);
Dennis A. Trevillyan, Plant City, FL (US);
Kevin Fitzgerald, Mesa, AZ (US);
Michael Eugene Kelley, Valrico, FL (US);
Anthony J. Curtis, Palm Harbor, FL (US);
Michael Felix Mulville, Bartow, FL (US);
Dennis A. Trevillyan, Plant City, FL (US);
Kevin Fitzgerald, Mesa, AZ (US);
Key Safety Systems, Inc., Sterling Heights, MI (US);
Abstract
A dual stage invention is designed to autoignite an autoignition material before a low temperature gas generant melts. Low temperature gas generants include a high nitrogen content organic fuel with ammonium nitrate as the oxidizer. The dual stage inflator has a first gas generant and a second gas generant that are ignited by separate igniters. The first gas generant and the second gas generant are insulated from the inflator housing to delay the heat transfer from the housing to the first gas generant and second gas generant during a bonfire test, which needs to be passed to receive Department of Transportation classification. The dual stage inflator also has an autoignition cartridge for disposing of the second gas generant by the first gas generant after the first gas generant burns for a predetermined amount of time.