Brakes – Internal-resistance motion retarder – With means compensating for change in temperature or viscosity
Patent
1994-08-17
1995-04-11
Oberleitner, Robert J.
Brakes
Internal-resistance motion retarder
With means compensating for change in temperature or viscosity
267 6411, 18832222, 236 93R, F16F 952, F16F 500
Patent
active
054049725
ABSTRACT:
A gas spring comprises a first bypass with a one-way valve that allows fluid to bypass the piston when the piston moves outward and a second bypass with a temperature-compensating spring-biased one-way valve that allows fluid to bypass the piston when the piston is pushed inward with a force exceeding the total of the force due to the gas pressure of the gas spring and the force required to open the spring-biased valve. Variations due to temperature changes in the force required to retract the gas spring are minimized.
REFERENCES:
patent: 2815099 (1957-12-01), Muller et al.
patent: 2899023 (1959-08-01), Rumsey
patent: 3532193 (1970-10-01), Kaiser
patent: 3791494 (1974-02-01), McNally
patent: 3792494 (1974-02-01), Matkan et al.
patent: 3958672 (1976-05-01), Keilholz
patent: 4408751 (1983-10-01), Dodson et al.
patent: 5106065 (1992-04-01), Staton et al.
patent: 5282609 (1994-02-01), Kuze
McDonnell Paul
Popjoy Mark A.
Fichtel & Sachs Industries, Inc.
Oberleitner Robert J.
Rutherford Kevin D.
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