Valve structure for telescopic hydraulic damper

Details Valve structure for telescopic hydraulic damper Valve structure for telescopic hydraulic damper

1987-06-16

1989-05-30

Halvosa, George E. A.

Brakes

Internal-resistance motion retarder

Resistance alters relative to direction of thrust member

13754315, 188287, 188289, 18832215, 244104FP, 280276, 280703, F16F 919, F16F 9342

Patent

active

048342238

ABSTRACT:
A telescopic hydraulic damper includes an outer tube filled with working oil, a pipe member mounted on the bottom of the outer tube, and an inner tube slidably disposed in the outer tube. A valve structure disposed in an inner end of the inner tube comprises a valve body lossely fitted over the pipe member, and a plurality of valve seats mounted in the inner end of the inner tube and spaced from each other across the valve body. The valve seats include an oil locking seat for shutting off working oil between the oil locking seat and the valve body upon engagement with each other, and a rebound seat for allowing working oil to flow between the rebound seat and the valve body upon engagement with each other. The oil locking seat having a surface for engaging the valve body, the surface being inclined at an acute angle with respect to the longitudinal axis of the damper.

REFERENCES:
patent: 1405968 (1922-02-01), Christman
patent: 1608424 (1926-11-01), Pertman
patent: 3268037 (1966-08-01), Louis
patent: 3395725 (1968-08-01), Roach
patent: 3912054 (1985-10-01), Fabre et al.
patent: 4059175 (1977-11-01), Dressell, Jr. et al.
patent: 4278266 (1981-07-01), Inoue et al.
patent: 4392664 (1983-07-01), Tsuchiya et al.

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