Rotary hydraulic snubber with a bypass valve

Details Rotary hydraulic snubber with a bypass valve Rotary hydraulic snubber with a bypass valve

1986-08-27

1988-02-09

Basinger, Sherman D.

Brakes

Internal-resistance motion retarder

Having a thrust member with a variable volume chamber

2941194, F16F 914, B66C 100

Patent

active

047236396

ABSTRACT:
A hydraulic snubber suitable for a skidding grapple or the like in which a twisted figure eight housing is provided to oppose free swinging in two mutually perpendicular horizontal directions, each portion of the figure eight having a cylinder housing with a rotor, each rotor having radially extending vanes. At least one vane has a flexible extension including at least two orifices equipped with a pocket for adjustably limiting the flow of hydraulic fluid to each respective side of the vane. The cylinder housing is equipped with a safety relief valve so that hydraulic fluid can bypass a vane to prevent excessive pressure buildup on one side of the vane.

REFERENCES:
patent: 845088 (1907-02-01), Hotchkin
patent: 1833969 (1931-12-01), Land
patent: 1920218 (1933-08-01), Shultz
patent: 1942658 (1934-01-01), Mitchell
patent: 1970369 (1934-08-01), Focht
patent: 2060554 (1936-11-01), Chryst
patent: 2070409 (1937-02-01), Mitchell
patent: 2678115 (1954-05-01), DeLoe
patent: 3237728 (1966-03-01), Rumsey
patent: 3592503 (1971-07-01), Lundberg
patent: 4609081 (1986-09-01), Hungerford

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