Variable dashpot for motor vehicles

Details Variable dashpot for motor vehicles Variable dashpot for motor vehicles

1991-04-05

1994-04-19

Oberleitner, Robert J.

Brakes

Internal-resistance motion retarder

Controlled by an operator remote from retarder

188319, F16F 946, B60G 1706

Patent

active

053038037

ABSTRACT:
A variable dashpot for motor vehicles A cylinder (2) full of vibration-suppressing fluid accommodates a piston (3). The piston is provided with vibration-suppressing valves, is fastened to a piston rod (8), and separates the cylinder into two compartments. The compartments communicate through a bypass. The cross-section of the bypass can be adjusted with a component (11) comprising a stator (12) with windings (13) and an electric motor (10) with a rotor (17). The improvement comprises making it possible to continuously and highly dynamically vary the cross-section of the bypass in a dashpot of the same size. This is attained in that the stator windings are accommodated directly in a recess (9) in the piston rod, which is made out of a material that can be magnetized, and the rotor is provided with permanent magnets (22), activates the adjusting component (11), and is accommodated in a bore in the stator (12).

REFERENCES:
patent: 4671392 (1987-06-01), Wossner
patent: 4723640 (1988-02-01), Beck
patent: 4754855 (1988-07-01), Kuwana et al.
patent: 4926983 (1990-05-01), Taubitz et al.
patent: 4948091 (1990-08-01), Satoh et al.
patent: 5035306 (1991-07-01), Ashiba

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