Device for tightening a seat belt in a motor vehicle
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 18, 2000
Grant Date -
N/A
app pub date -
Oct 7, 1997
filing date -
Oct 7, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A drive device includes a piston guided linearly in at least one pressure tube. The drive for the piston includes a plurality of pyrotechnic drive cartridges ignitable in succession, and is especially useful for tightening a seat belt in a motor vehicle. The linear movement of the piston, urged as a result of an initial ignition, triggers subsequent ignitions for driving the piston. The drive cartridges are ignited in succession.
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