Pyrotechnical driving device especially for a retightening devic

Details Pyrotechnical driving device especially for a retightening devic Pyrotechnical driving device especially for a retightening devic

1981-09-10

1983-08-23

Burns, Wendell E.

Power plants

One shot explosion actuated expansible chamber type motor

Having orifice or conduit restricting flow of combustion...

F01B 2908

Patent

active

043996558

ABSTRACT:
Pyrotechnical driving device especially for a back-tightening device of a safety belt system with a cartridge containing a propellant charge, preferably a solid propellant charge. The cartridge is connected to a cylinder which contains a driving piston. The cartridge is separated from the piston by a rupture plate which is ruptured after the propellant charge is activated and after which the driving piston is accelerated. The rupture plate is followed directly by a form-stable nozzle plate which has a nozzle opening which is narrower as compared to the rupture plate.

REFERENCES:
patent: 2674852 (1954-04-01), Olman
patent: 2736522 (1956-02-01), Wilson
patent: 3149456 (1964-09-01), Sterrett
patent: 3484846 (1969-12-01), Hosman et al.

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