Shock absorbing device with integral pressure relief valve

Details Shock absorbing device with integral pressure relief valve Shock absorbing device with integral pressure relief valve

1985-11-25

1987-06-23

Halvosa, George E. A.

Brakes

Internal-resistance motion retarder

Resistance alters relative to direction of thrust member

137493, 188280, 188312, 188317, 18832215, 267127, F16F 934

Patent

active

046746072

ABSTRACT:
A liquid spring shock absorbing device 8 comprising an hydraulic piston 10 with an integral surge valve 14. The hydraulic piston 10 is positioned within a fluid filled piston housing 12 and is made up of a piston body 16, a spring reaction plate 22 and a piston heat 18. A large annular spring 30 and a small annular spring 36 are positioned adjacent to the spring reaction plate 22. Short duration shocks are transmitted by the fluid to cause rotation of annular spring 36 which opens relief valve port 42. Long duration, high intensity shocks cause compression of both annular springs, opening of relief valve port 42 and movement of hydraulic piston 10.

REFERENCES:
patent: 2521202 (1950-09-01), Cloudsley
patent: 2655935 (1953-10-01), Kinzbach
patent: 2717058 (1955-09-01), Brundrett
patent: 3100502 (1963-08-01), Ford et al.
patent: 3350087 (1967-10-01), Haanes
patent: 4335744 (1982-06-01), Bey
patent: 4372545 (1983-02-01), Federspiel
patent: 4610332 (1986-09-01), Mourray

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