End damper for motor-vehicle shock absorber

Details End damper for motor-vehicle shock absorber End damper for motor-vehicle shock absorber

1990-10-12

1992-06-16

Oberleitner, Robert J.

Spring devices

Vehicle

Mechanical spring and nonresilient retarder

280698, B60G 1506

Patent

active

051219069

ABSTRACT:
An end damper is used with a motor vehicle frame, a wheel vertically displaceable adjacent the frame, and a vertically compressible shock absorber having an upper part secured to the frame and a lower part secured to the wheel. The absorber is vertically compressible with upward travel of the lower part. The end damper is carried on the frame above the lower part and comprises a housing defining a chamber, a body of liquid in the chamber, an upper sleeve in the chamber and connected to the frame, and a lower sleeve vertically telescopable with the upper sleeve between an upper position and a lower position, subdividing the chamber with the upper sleeve into a pair of compartments communicating through the gap, and defining with the upper sleeve an annular passage communicating between the compartments and of substantially greater length in the upper position than in the lower position. A spring braced between the sleeves urges the lower sleeve into the lower position. A conduit extends between the compartments and a check valve in the conduit permits flow through the conduit on travel of the lower sleeve from the upper to the lower position.

REFERENCES:
patent: 2853974 (1958-09-01), Hewitt
patent: 2907414 (1959-10-01), Patriquin
patent: 3603610 (1971-09-01), Thompson
patent: 4397452 (1983-08-01), Fouts
Patent Abstracts of Japan, M-618, Aug. 21, 1987, vol. 11, No. 258, JP 62 64603 A., JP 62 64604 A:, & JP 62 64605A.

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