Oil pressure shock absorber

Details Oil pressure shock absorber Oil pressure shock absorber

1977-01-05

1978-03-14

Halvosa, George E. A.

Brakes

Internal-resistance motion retarder

Position of thrust member relative to chamber

188297, 188314, 267 64R, 267116, 293DIG2, F16F 948

Patent

active

040786382

ABSTRACT:
An oil pressure shock absorber which can be disassembled wherein an inner cylinder having a free piston fitted in it and a high pressure gas enclosed on the base end side is slidably fitted at the tip inside an outer cylinder, an oil seal is provided on their sliding contact surfaces, a plurality of orifices arranged in the axial direction are formed on the side wall of the inner cylinder inserted in the outer cylinder, an annular concave groove is formed on the inside surface of the outer cylinder so as to be opposed to the above mentioned orifices, axial concave grooves are made on the outside surface of the inner cylinder from its tip and the tip part of the inner cylinder and the interior of the outer cylinder are filled with oil, thereby a collision energy may be uniformly absorbed over the entire range of the stroke.

REFERENCES:
patent: 3491993 (1970-01-01), Scholin et al.
patent: 3788433 (1974-01-01), Katsumori
patent: 3804217 (1974-04-01), Keijzer et al.
patent: 3870130 (1975-03-01), Millar
patent: 3904182 (1975-09-01), Allinquant et al.
patent: 3944198 (1976-03-01), Sakamoto

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