Pilot-controlled shock absorber

Details Pilot-controlled shock absorber Pilot-controlled shock absorber

1992-05-29

1993-08-10

Oberleitner, Robert J.

Brakes

Internal-resistance motion retarder

Valve structure or location

1374938, F16F 934

Patent

active

052340856

ABSTRACT:
The invention is directed to a shock absorber in which the structure of both the main valve and the pilot control valve is simplified, and makes their operation less vulnerable to malfunction because the number of parts moved relative to one another is reduced. This is achieved by functionally uniting the valve plate and pressure plate in an especially embodied novel valve plate, in the form of an annular shim with a fingerlike toothed contour of the inside circumference, which pierces a corresponding contour of an axial region of a stroke limiter, as a result of which a guidance of the valve plate quite close to the force introduction points by means of a spring or the openings to be closed takes place, thereby preventing unilateral opening of a valve plate. The relief piston is sealed off from the pilot control chamber by means of one gap seal and one sealing ring, so that the production tolerances can be greater and as a result an original-shape method without remachining is possible in manufacture.

REFERENCES:
patent: 3937307 (1976-02-01), de Kock
patent: 3991862 (1976-11-01), Tanabe
patent: 4113072 (1978-09-01), Palmer
patent: 5129488 (1992-07-01), Furuya et al.
patent: 5152379 (1992-10-01), Sackett et al.

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