Brakes – Internal-resistance motion retarder – Resistance alters relative to direction of thrust member
Patent
1975-03-19
1977-07-12
Halvosa, George E. A.
Brakes
Internal-resistance motion retarder
Resistance alters relative to direction of thrust member
137512, 137854, 188322, F16F 934
Patent
active
040348601
ABSTRACT:
In a telescoping shock absorber which has a cylinder containing a damping medium and a piston slidably disposed in the cylinder, within the confines of the cylinder there are provided separate first and second channels provided with valves. The valves are so oriented that -- in response to the motion of the piston -- in the one channel there will be a medium flow only in the one direction and in the other channel there will be a medium flow only in the other, opposite direction. At least one of the channels has a first valve designed as a function of the desired damping characteristics of the shock absorber and a second valve disposed downstream of the first valve with respect to the flow direction of the damping medium in that channel. The second valve is structured merely as a check valve to open at least approximately simultaneously with the opening of the first valve and to close prior to the closing of the first valve.
REFERENCES:
patent: 2717058 (1955-09-01), Brundrett
patent: 3194262 (1965-07-01), Hamilton et al.
patent: 3200843 (1965-08-01), Jackson
patent: 3312312 (1967-04-01), De Carbon
patent: 3380560 (1968-04-01), Katz
Halvosa George E. A.
Volkswagenwerk Aktiengesellschaft
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