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US 2002/0153444 A1Published application
Drive for a belt tensioner
AssigneeTakata (Europe) Vehicle Safety Technology GmbH
InventorsGunter Maierhofer, Gerhard Klingauf, Dieter Beck, Katharina Low
Life of this patent
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Abstract
A drive for a belt tensioner for safety belts has a drive chamber formed between two plates. A drive band whose two ends are fastened to a drive shaft such that the drive band forms a loop which can be exposed to expanding gas discharged from a gas outlet such that the drive band winds off and drives the drive shaft. The drive band is fixed to the plates by a fixing apparatus at a position disposed between its ends.
Claims11
A drive for a safety belt tensioner, comprising:
- two mutually parallel side plates;
- a drive shaft disposed between the side plates;
- a drive band having first and second end which are connected to the drive shaft such that the drive band forms a loop that can be at least partially wrapped around the draft shaft and that forms a drive chamber with the side plates into which gases can be released in a manner which expands the loop, unwraps the loop from the drive shaft and induces the drive shaft to rotate;
- and
- a fixing apparatus for fixing a predetermined portion of the belt to the plates at a position between the first and second ends and limiting the expansion of the loop in at least one direction.
2 more elements
Dependencies are inferred from the claim text.