Brakes – Internal-resistance motion retarder – Controlled by an operator remote from retarder
Patent
1993-12-28
1995-10-03
Oberleitner, Robert J.
Brakes
Internal-resistance motion retarder
Controlled by an operator remote from retarder
188317, 18832215, 280707, F16F 918, F16F 946, B60G 1126
Patent
active
054544521
ABSTRACT:
A shock absorber has an arrangement for bringing about different kinds of damping characteristics, in response to external controls and independently of how the piston speed varies. The shock absorber comprises a piston which works in a cylinder (2) and which has a passage between upper and lower sides (1a, 1b) of the piston. The changes in the damping characteristics are obtained by a restriction in a channel through which a shock absorber medium or fluid flows. A first valve element (7) exerts an influence on the restriction in response to a first pressure which is created by a pilot flow running between the upper and lower sides at the piston. The pilot flow is determined by a second valve element (8) which is controllable by electrical control signal. The first valve element (7) comprises a spring-loaded, pressure-operated slide, the instantaneous position of which is counterbalanced by the first pressure and a second pressure originating from the pressure differential existing between the upper and lower sides of the piston. The second valve element interacts with a proportional magnet which provides a setting of the first pressure that is independent of the variation in the piston speed.
REFERENCES:
patent: 4732408 (1988-03-01), hlin
patent: 5090525 (1992-02-01), hlin
Oberleitner Robert J.
Ohlins Racing AB
Poon Peter M.
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