Seat belt tensioner
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Jun 22, 1999
Grant Date -
N/A
app pub date -
Feb 17, 1998
filing date -
Feb 17, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A housing has a chamber and a piston is slidablyally mounted in the chamber. The piston has a piston shaft which extends outwardly of the housing and has a seat belt reel attached thereto. A pyrotechnic device is energizable to introduce pressurized gas into the chamber and thereby translate the piston within the chamber. Screw threads are provided between the housing and the piston shaft so that translation of the piston shaft upon energization of the pyrotechnic device will cause the screws to impart rotation to the piston shaft and the seat reel. Accordingly, the seat belt reel is simultaneously rotated to wind the belt and also projected outwardly with respect to the housing so that the belt is tensioned by both a rotary and a projecting action of the seat belt reel.
First Claim
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International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 6 Citation Count
- B60R Class
- 1.23 % this patent is cited more than
- 26 Age