Magnetic centrifugal clutch

Details Magnetic centrifugal clutch Magnetic centrifugal clutch

1996-03-15

1997-11-25

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 75D, 310 92, 192 80, 192 94, H02K 4900, H02P 1500

Patent

active

056915870

ABSTRACT:
A magnetic coupling device has an electroconductive rotor presenting a band of electroconductive material and has a magnet rotor with permanent magnets which are slide-mounted to move radially outward responsive to centrifugal force in opposition to a spring bias. When the magnet rotor is stationary the magnets are radially inward of the orbit of the electroconductive band, and when the magnets have moved outwardly when the magnet rotor is rotating, the magnets are spaced by an air gap from the electroconductive band so that eddy currents are induced in the band resulting in coupling of the rotors. The electroconductive rotor preferably has two such bands positioned on opposite sides of the magnet rotor. The rotors may have sheaves mounted thereon.

REFERENCES:
patent: 3573517 (1971-04-01), Osterstrom
patent: 4876471 (1989-10-01), Lacour
patent: 4896754 (1990-01-01), Carlson et al.
patent: 5099974 (1992-03-01), Spechko
patent: 5158279 (1992-10-01), Laffet et al.
patent: 5252874 (1993-10-01), Viegas
patent: 5264755 (1993-11-01), Hettlage et al.
patent: 5439086 (1995-08-01), Withey

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