Brakes – Internal-resistance motion retarder – Magnetic fluid or material
Patent
1991-12-03
1996-08-06
Graham, Matthew C.
Brakes
Internal-resistance motion retarder
Magnetic fluid or material
505100, F16F 936
Patent
active
055425062
ABSTRACT:
Disclosed are devices for influencing and/or controlling relative motion between members, such as vibration damping or absorbing devices, clutches and brakes. The devices comprise a magnet on one member and a field cooled superconductor on the other member. The devices utilize the interaction of the magnetic field of the magnet as it moves through the pinned flux in the superconductor to either influence or control relative motion.
REFERENCES:
patent: 3589300 (1971-06-01), Wipf
patent: 4351515 (1982-09-01), Yoshida
patent: 4886778 (1984-12-01), Moon et al.
patent: 4979445 (1990-12-01), Lanzara
patent: 5071831 (1991-12-01), Hilal
patent: 5122509 (1992-06-01), Beetz et al.
patent: 5130588 (1992-07-01), Armstrong et al.
Chu Wei-Kan
Ma Ki-Bui
McMichael Chase K.
Graham Matthew C.
University of Houston-University Park
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