Brakes – Internal-resistance motion retarder – Having a thrust member with a variable volume chamber
Patent
1983-07-13
1985-08-20
Halvosa, George E. A.
Brakes
Internal-resistance motion retarder
Having a thrust member with a variable volume chamber
137599, 1376142, F16F 944
Patent
active
045358770
ABSTRACT:
A hydraulic damper of the adjustable damping force type includes a piston working in a cylinder and partitioning the interior of the piston into two liquid chambers, a first passage provided in the piston for connecting the two liquid chambers, a first damping force generating valve mechanism provided on the piston for generating a damping force in response to liquid flow in the first passage, a by-pass passage for connecting the two liquid chambers and by-passing the first passage, and an adjusting valve for controlling the effective passage area of the by-pass passage. A second damping force generating valve mechanism is provided in the by-pass passage and generates a damping force substantially smaller than the damping force of the first damping force generating valve mechamism.
REFERENCES:
patent: 1267532 (1918-05-01), Flentje
patent: 2090755 (1937-08-01), Hodpera
patent: 2780321 (1957-02-01), Sturari
patent: 2948357 (1960-08-01), Cookson
patent: 3351160 (1967-11-01), DeKoning et al.
patent: 3365003 (1968-01-01), Willich
patent: 3559776 (1971-02-01), Schultze
patent: 4159756 (1979-07-01), Murakami et al.
patent: 4313529 (1982-02-01), Kato et al.
patent: 4372343 (1983-02-01), Trinkwalder, Jr.
Halvosa George E. A.
Tokico Ltd.
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