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:
May. 08, 2001
Filed:
Jul. 16, 1999
Applicant:
Inventors:
Karl Hudelmaier, Alfdorf, DE;
Thomas Mödinger, Alfdorf, DE;
Johannes Schmid, Schwäbisch Gmünd, DE;
Assignee:
TRW Occupant Restraint Systems GmbH & Co. KG, Alfdorf, DE;
Primary Examiner:
Int. Cl.
CPC ...
B60R 2/246 ;
U.S. Cl.
CPC ...
B60R 2/246 ;
Abstract
A linear drive (,) for a belt tensioner has a cylinder tube (,) comprising at one axial end a face wall (,) provided with an opening (,). A piston (,) is arranged shiftably in the cylinder tube. The piston has a hollow inner space (,). A pyrotechnical propellant charge (,) is provided which following its ignition acts upon the inner space (,) of the piston (,) with compressed gas. To provide a cooling and a filtering function, a pad (,) of a wire conglomerate is arranged within the cylinder tube adjacent the face wall (,) of the cylinder tube.