Two-tube telescopic hydraulic shock absorbers

Details Two-tube telescopic hydraulic shock absorbers Two-tube telescopic hydraulic shock absorbers

1982-05-07

1984-05-01

Reger, Duane A.

Brakes

Internal-resistance motion retarder

Including seal or guide

188315, 18832217, F16F 906

Patent

active

044455984

ABSTRACT:
The shock absorber is of the type in which there is gas under pressure in the interspace between the two coaxial tubes or cylinders.
In order to prevent the gas under pressure from reaching the upper part of the shock absorber and at the same time allow the hydraulic fluid which has been drawn to the upper part of the shock absorber to descend to the interspace, an annular gasket of elastomeric or similar material with an inverted U- or V-shaped cross-section is arranged in the upper part of the interspace to form an annular channel which is open at the bottom and defined by two annular lips engaging with the inner cylinder and the outer cylinder respectively. One of these lips may separate elastically from the respective cylinder so that oil may descend into the interspace. This deformable lip engages the respective cylinder in an annular zone below the rim at the upper end of the inner cylinder.

REFERENCES:
patent: 4005769 (1977-02-01), Itoh
patent: 4085925 (1978-04-01), Peddinghaus et al.
patent: 4108287 (1978-08-01), Kato
patent: 4166523 (1979-09-01), Fujii et al.

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