Land vehicles – Wheeled – Attachment
Patent
1997-05-13
1999-02-16
English, Peter C.
Land vehicles
Wheeled
Attachment
280739, 297480, B60R 2246, B60R 2248
Patent
active
058712364
ABSTRACT:
An apparatus (40) for pretensioning seat belt webbing (16) which is extensible about an occupant of a vehicle seat (14) includes a housing (70) having a fluid chamber (90) and an actuatable pyrotechnic device (150) in fluid communication with the fluid chamber. An actuatable venting mechanism, such as a pyrotechnic plug (160), when actuated, opens a vent opening (96) to enable venting of fluid from the fluid chamber (90). A controller (190) is operatively connected to the pyrotechnic device (150) and to the venting mechanism (160) for controlling the actuation of the pyrotechnic device and of the venting mechanism. The controller (190) actuates only the pyrotechnic device (150) to provide a first pretensioning output level and, alternatively, actuates both the pyrotechnic device (150) and the venting mechanism (160) to provide a second pretensioning output level.
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Bauer Barney J.
Brown Louis R.
Gillis Kevin M.
English Peter C.
TRW Vehicle Safety Systems Inc.
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