Piston catcher for a pyrotechnic linear piston and cylinder driv

Details Piston catcher for a pyrotechnic linear piston and cylinder driv Piston catcher for a pyrotechnic linear piston and cylinder driv

1995-01-18

1996-03-05

Denion, Thomas E.

Expansible chamber devices

With cushioning means effective over a portion only of stroke

92175, 280806, 188375, F01B 1102

Patent

active

054957907

ABSTRACT:
In a pyrotechnic linear piston and cylinder drive in a belt pretensioner, the cylinder (10) has a frustoconical free end (12) and the piston (14) is attached to the end of a cable (16). The piston (14) is tapered frustoconically at its end adjacent to the free end (12) of the cylinder (10). An annular piston member (22) is slipped over and frictionally engaged with the tapered end portion (20) of the piston (14). When the annular piston member (22) reaches the frustoconical free end (12) of the cylinder (10), the piston (14) is forced further into the annular piston member, deforming both parts and dissipating energy.

REFERENCES:
patent: 1760581 (1930-05-01), Burns
patent: 4288098 (1981-09-01), Tsuge et al.
patent: 4573322 (1986-03-01), Fo/ hl
patent: 5310219 (1994-05-01), Fo/ hl
patent: 5411291 (1995-05-01), Fo/ hl

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