Patent · US Active

Rotary drive for a belt tensioner

US7429231B2 · kind B2 · utility

2Cited by

5References

14Claims

0Family size

Assignee

TRW AUTOMOTIVE GMBH · DE

Inventors

Wilfried Bieg · Mutlangen, DE
Thomas Moedinger · Alfdorf, DE
Gerhard Malbrich · Gaildorf, DE

Key dates

Filing date	Apr 26, 2006
Grant date	Sep 30, 2008
Priority date	—
Expiry date	Mar 13, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/18816
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A rotary drive for a belt tensioner includes a housing, a pinion rotatably mounted therein, and at least one driving gear coupled to the pinion, the driving gear being mounted in the housing and being adapted to be driven by pressurized gas introduced into a pressure chamber. Formed in the driving gear is a cavity having a substantially radially extending wall which, in the installed state, is opposite to a protrusion which projects into the cavity and is rigidly connected to the housing, the wall of the cavity and the protrusion forming part of a wall of the pressure chamber.

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