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. 27, 2001
Filed:
Jun. 30, 1999
Marc Winterhalder, Garching/Alz, DE;
TRW Airbag Systems GmbH & Co. KG, Aschau Inn, DE;
Abstract
The invention relates to a gas generator, comprising a first gas-generating stage and at least one gas-generating stage arranged downstream of the first stage, and also comprising a device for detecting a pressure change in the gas generator, wherein the device for detecting the pressure change comprises a chamber divided by a movable part into two partial chambers which are gas-tight with respect to each other, the partial chambers having openings which are in flow connection with the first stage and each have different cross-sectional areas, so that the pressure change spreads at different speeds in the two partial chambers and brings about a movement of the movable part, and the movable part being connected with a movement meter, which due to the movement of the movable part generates an electrical impulse to activate the second stage.