Energy absorber with internal pressure relief valve

Details Energy absorber with internal pressure relief valve Energy absorber with internal pressure relief valve

1975-10-29

1977-10-18

Reeves, Robert B.

Vehicle fenders

Double-ender interconnected

293 85, 267 64R, 267116, 213223, B60R 1906, F16F 906

Patent

active

040543110

ABSTRACT:
Energy absorbing unit for vehicle bumper support having inner and outer telescoping cylinders with primary valve for metering fluid between a pair of contractible and expansible fluid chambers to dissipate impact energy. An auxiliary pressure relief valve internal of the unit in parallel with the primary valve opens in response to predetermined pressure buildup in one of the chambers to control pressure and prevent damage to the unit. A gas spring in the unit moves the two cylinders in their extended position on removal of bumper impact load.

REFERENCES:
patent: 2989299 (1961-06-01), Modrich
patent: 3700273 (1972-10-01), Jackson et al.
patent: 3751091 (1973-08-01), Rennecker
patent: 3794310 (1974-02-01), Mewhinney
patent: 3820772 (1974-06-01), Kerr et al.
patent: 3853311 (1974-12-01), Kreuzer et al.
patent: 3891199 (1975-06-01), Willich et al.

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