Brakes – Internal-resistance motion retarder – Magnetic fluid or material
Patent
1991-10-18
1993-11-23
Oberleitner, Robert J.
Brakes
Internal-resistance motion retarder
Magnetic fluid or material
188285, F16F 1503, F16F 600, B60G 1700
Patent
active
052635589
ABSTRACT:
An electromagnetic strut comprises a coil assembly including a plurality of coils arranged along a predetermined axis, and a magnetic device movable relative to the coil assembly along the predetermined axis. The magnetic device includes a magnetic circuit which produces two magnetic fields spaced at a distance along the predetermined axis, Each of the plurality of coils has an axial dimension less than the distance at which the two magnetic fields of the magnetic circuit are spaced.
REFERENCES:
patent: 2906899 (1959-09-01), Geneslay
patent: 3941402 (1976-03-01), Yankowski et al.
patent: 4892328 (1990-01-01), Kurtzman et al.
patent: 4900054 (1990-02-01), Kessler
Atsugi Unisia Corporation
Ballato Josie A.
Oberleitner Robert J.
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