Patent · US Active

Linear drive

US9428147B2 · kind B2 · utility

0Cited by

14References

10Claims

0Family size

Assignee

TRW AUTOMOTIVE GMBH · DE

Inventors

Simon Schreiber · Schwäbisch Gmünd, DE
Hermann Grau · Mutlangen, DE
Krzysztof Krukowski · Alfdorf, DE

Key dates

Filing date	Mar 14, 2012
Grant date	Aug 30, 2016
Priority date	—
Expiry date	Mar 14, 2032

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60R2022/4661
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A linear drive, especially for a belt tensioner, includes a housing (10) including a piston seat (12), a piston element (16) accommodated in the piston seat (12) and a pyrotechnical drive element adapted to supply gas for displacing the piston element (16). The inner wall of the piston seat (12) includes a groove (30) extending in the displacing direction (R) of the piston element (16) through which gas can flow off the piston seat (12).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.