Seat belt tensioning device
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United States of America Patent
Stats
-
Mar 31, 1981
Grant Date -
N/A
app pub date -
May 8, 1979
filing date -
May 23, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A seat belt tensioning device which restrains the passenger and absorbs his kinetic energy at an urgent time such as upon an impact of a vehicle. A piston is slidably disposed within a cylinder so as to move in only one direction. Return stop means prevents the piston from moving in an opposite direction. A metallic deformable member is disposed within a cavity of the piston, one end of the member being fixed to the piston, the other end thereof being connected to a seat belt. Piston operating means moves the piston within the cylinder at an urgent time and tensions the seat belt to restrain the passenger. When the tension force applied to the seat belt exceeds the deforming stress value of the metallic deformable member, the member is plastically deformed and the seat belt is drawn out of the cylinder to absorb the kinetic energy of the passenger.
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Family
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Cited Art Landscape
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