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:
Mar. 06, 2001
Filed:
Dec. 15, 1999
Rolf Ruckdeschel, Schwangau, DE;
Anh-Dung Tieu, Höhenkirchen, DE;
Markus Lindner, Birkenfeld, DE;
Horst Laucht, Bruckmühl, DE;
Marc Winterhalder, Garching/Alz, DE;
Martin Fink, Unterbernbach, DE;
Christof Hinterberger, Ettlingen, DE;
Markus Leifheit, Biberach/Affaltern, DE;
TRW Airbag Systems GmbH & Co. KG, Aschau Inn, DE;
Abstract
The present invention relates to an inflator for a safety device, in particular for a vehicle occupant restraint system, comprising a housing (,), a combustion chamber formed in the housing and including a solid propellant (,) for generating hot gas, and a coolant (,) introduced into a predetermined flow path of the hot gas. The inflator in accordance with the invention is characterized in that the flow path of the hot gas passes through a nozzle (,) comprising a pitot zone (,) in which the hot gas emerging from the combustion chamber (,) has a high static pressure, and comprising a nozzle neck (,) in which the hot gas builds up a high dynamic pressure, and in that the coolant (,) is arranged in a sleeve-shaped reservoir (,) extending from the pitot zone (,) at least in part into the nozzle neck (,). The inflator in accordance with the invention permits an effective reduction in the exhaust gas temperature of the generated hot gas.