REVERSIBLE SEAT BELT TENSIONER
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United States of America Patent
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N/A
Issued Date -
N/A
app pub date -
Mar 7, 2013
filing date -
Sep 22, 2008
priority date (Note) -
Abandoned
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Abstract
A reversible seat belt tensioner includes an electric motor (2), a belt shaft (1) drivable in the belt winding direction by the electric motor (2) via a drive wheel (10), and a drive shaft (9) transmitting the rotational movement of the electric motor (2) to the drive wheel (10). The drive shaft (9) is connected to at least one of the drive wheel (10) and the electric motor (2) via a helical gear unit. The teeth of the helical gear unit make point-shaped contacts with each other, and the drive shaft (9) is axially movable relative to the electric motor (2) or the drive wheel (10) without disengaging the gear teeth.
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