Permanent magnet vehicle braking apparatus

Details Permanent magnet vehicle braking apparatus Permanent magnet vehicle braking apparatus

1996-11-26

1998-09-08

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 86, 310 93, 310104, 310105, 464 29, 192 843, 188267, H02K 4902

Patent

active

058048979

ABSTRACT:
Projecting into a brake drum is an annular guide frame defining an annular inner chamber of rectangular shape in section, having an outer wall portion formed by a thin cylindrical body of nonmagnetic material, and an inner annular wall of ferromagnetic material. An annular magnet support member is axially movable within the inner chamber of the guide frame, and supports a plurality of permanent magnets disposed closely adjacent to the cylindrical body and in circumferentially spaced apart positions of uniform pitch, the polarities of the permanent magnets alternating circumferentially.

REFERENCES:
patent: 4226574 (1980-10-01), Villette
patent: 5023499 (1991-06-01), Kuwahara
patent: 5054587 (1991-10-01), Matsui et al.
patent: 5064029 (1991-11-01), Araki et al.
patent: 5303802 (1994-04-01), Kuwahara
patent: 5376862 (1994-12-01), Stevens

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