Device for winding a seat belt in vehicles

Details Device for winding a seat belt in vehicles Device for winding a seat belt in vehicles

1975-04-03

1976-07-20

McCarthy, Edward J.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

74 8915, 2421074B, B65H 7548

Patent

active

039702669

ABSTRACT:
A device for winding up a vehicle seat belt in the event of a vehicle impact comprises a hollow winding drum rotatably mounted in a casing coaxially surrounding a threaded central axle which is rotationally fast with the casing. An annular piston inserted between the drum and axle is axially movable by the pressure generated by combustion gases issuing from a pyrotechnic charge detonated by a signal from an impact detector, to rotate the drum and wind up the belt, the piston being keyed for rotation with the drum and for helical movement relative to the axle. Under normal conditions the drum is free to rotate to wind up and unwind the belt, but a mechanism is automatically actuated upon impact to prevent or oppose rotation of the drum in an unwinding direction.

REFERENCES:
patent: 2843335 (1968-07-01), Hoven
patent: 3077324 (1963-02-01), Strickland
patent: 3531061 (1970-09-01), Davies
patent: 3845836 (1974-11-01), Bendler
patent: 3871470 (1975-03-01), Schwanz

Affiliated with

Also associated with

Rating

Device for winding a seat belt in vehicles does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Device for winding a seat belt in vehicles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for winding a seat belt in vehicles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-552596