Hydraulic damper with oil lock mechanism

Details Hydraulic damper with oil lock mechanism Hydraulic damper with oil lock mechanism

1988-07-12

1990-10-23

Kashnikow, Andres

Spring devices

Vehicle

Mechanical spring and nonresilient retarder

267 6412, 267 6415, 188284, 188288, 188300, 18832219, 280276, F10F 500, F16F 148

Patent

active

049646257

ABSTRACT:
A hydraulic damper has an oil lock mechanism for preventing bottoming when the hydraulic damper is fully compressed. The hydraulic damper also includes an outer tube, an inner tube, a cylinder movable with the inner tube, a piston rod movable with the outer tube, a piston fixed to a distal end of the piston rod, and a coil spring disposed in the inner tube. The oil lock mechanism comprises an oil lock piece mounted on an upper end of the cylinder, and an oil lock tube disposed concentrically between the cylinder and the inner tube and having a larger-diameter portion which can be spaced from the oil lock piece when the hydraulic damper is extended and a smaller-diameter portion which can be held in sliding contact with the oil lock piece when the hydraulic damper is compressed.

REFERENCES:
patent: 1234311 (1917-07-01), Duncay
patent: 2819893 (1958-01-01), Edwards
patent: 4345748 (1982-08-01), Wossner et al.
patent: 4367882 (1983-01-01), Alexander et al.
patent: 4424980 (1984-01-01), Tsukamoto et al.
patent: 4561669 (1985-12-01), Simons

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