Snubber for a hydraulic motor

Details Snubber for a hydraulic motor Snubber for a hydraulic motor

1996-11-22

1997-10-28

Oberleitner, Robert J.

Brakes

Internal-resistance motion retarder

Position of thrust member relative to chamber

188312, 188289, 91406, 91407, 92 85B, F16F 948, F15B 1522

Patent

active

056809131

ABSTRACT:
Snubbers are useful in dampening inertia loads at the end of stroke movement of a hydraulic motor. Known snubbers usually have a spear type annular orifice with an associated plunger which usually restrict fluid flow in the non-snubbing mode thereby slowing response in the opposite direction. The subject snubber includes a snubber stem which is moved to contact the end of a tubular hydraulic cylinder so that all fluid from an actuating chamber must pass through a circular orifice which will build up pressure in the actuating chamber to provide a dampening effect on a piston rod assembly. When fluid is directed into the actuating chamber the snubber stem will move away from the end of the tubular hydraulic cylinder to allow free flow into the actuating chamber to provide quick response for extension of the piston rod assembly.

REFERENCES:
patent: 1902018 (1933-03-01), Davis
patent: 1910644 (1933-05-01), Smith
patent: 2299345 (1942-10-01), Peterson
patent: 2329145 (1943-09-01), Stuebing, Jr.
patent: 2778343 (1957-01-01), Crosetto, Jr.
patent: 3574886 (1971-04-01), Solovieff
patent: 3608437 (1971-09-01), Little et al.
patent: 3877344 (1975-04-01), Langland
patent: 4015835 (1977-04-01), Schumacher et al.
patent: 4250793 (1981-02-01), Berg
patent: 5413030 (1995-05-01), Richardson et al.

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