Brakes – Internal-resistance motion retarder – Position of thrust member relative to chamber
Patent
1986-09-18
1988-09-06
Kashnikow, Andres
Brakes
Internal-resistance motion retarder
Position of thrust member relative to chamber
188271, 18832214, 18832222, F16F 948, F16F 934, F16F 1100, F16F 900
Patent
active
047686294
ABSTRACT:
In a double-tube vibration damper the piston acts on an abutment spring when arriving at a predetermined position during its inward stroke. The abutment spring acts on a control member. The control member cooperates with a bottom passage to reduce the cross-sectional area of the bottom passage in response to the piston starting to act onto the abutment spring such as to reduce the cross-sectional area of the bottom passage. In this way a hydraulic abutment function is obtained on inward movement of the piston rod. The control member is biased by a return spring towards the abutment spring. The abutment spring acts with its end remote from the control member onto a friction ring, which friction ring is frictionally guided by the inner face of the cylinder. The biasing action of the return spring is larger than the force necessary for moving the friction ring along the inner face of the cylinder.
REFERENCES:
patent: 2395027 (1946-02-01), Whisler
patent: 2705634 (1955-04-01), Sampson et al.
patent: 2729308 (1956-01-01), Koski et al.
patent: 2742112 (1956-04-01), Wessel
patent: 4383595 (1983-05-01), Schnitzius
patent: 4502366 (1985-03-01), Metz et al.
Fichtel & Sachs AG
Kashnikow Andres
Oberleitner Robert J.
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