Damping force generating device for an oil damper

Details Damping force generating device for an oil damper Damping force generating device for an oil damper

1983-04-07

1985-05-07

Reger, Duane A.

Brakes

Internal-resistance motion retarder

Having a thrust member with a variable volume chamber

188285, F16F 944

Patent

active

045152535

ABSTRACT:
A damping force generating device for an oil damper including a hydraulic cylinder, a sub-tank having in the interior thereof an oil chamber and a gas chamber, and a first oil passage which hydraulically connects the hydraulic cylinder to the oil chamber. The damping force generating device comprises a valve seat having second and third oil passages for passing therethrough an operating oil when it is flowing in first and second directions of the first oil passage, respectively; a first valve for opening and closing the second oil passage; and a second valve for opening and closing the third oil passage. The first or second valve comprises a valve body, a mechanism for normally urging the valve body in a closing direction, and an urging force adjusting arrangement for adjusting the urging force of the urging mechanism from the exterior. The damping force generating device is simplified in structure and provides for a reduction in size of the oil damper as well as facilitated adjustment of the damping force.

REFERENCES:
patent: 2291499 (1942-07-01), Penick
patent: 2804513 (1957-08-01), Oppel
patent: 3706362 (1972-12-01), Faure
patent: 4061320 (1977-12-01), Warner
patent: 4311302 (1982-01-01), Heyer et al.

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