Spring set brake

Details Spring set brake Spring set brake

1994-08-01

1997-04-15

Oberleitner, Robert J.

Brakes

Operators

Spring

74 99A, 188 723, F16D 6512

Patent

active

056200650

ABSTRACT:
The magnetic air gap in a spring set brake, SSB, is set independently of the length of the legs spacing the pressure plate from the pole face which controls the axial travel length of the armature between a released position engaging the pole face and a braking position pushing a friction disc against the pressure plate. The legs have radially inwardly facing mounting surfaces engaging and retaining the pressure plate. The legs have axially extending line contact guide surfaces for the armature, minimizing magnetic flux leakage through the legs to the armature, and instead concentrating magnetic flux at the pole face to maximize magnetic force attracting the armature. An injection molded friction disc is provided, as well as a keyed hubless design. A manual release mechanism is also provided. An energization coil is provided enabling simplified connection lead bonding.

REFERENCES:
patent: 2512565 (1950-06-01), Hallander
patent: 2964137 (1960-12-01), Luedtke et al.
patent: 3171515 (1965-03-01), Wolfe
patent: 3357528 (1967-12-01), Verlinde
patent: 3525424 (1970-08-01), McCarthy
patent: 3608679 (1971-09-01), Harrison
patent: 3763968 (1973-10-01), Noly
patent: 4004262 (1977-01-01), Grove
patent: 4022301 (1977-05-01), Hansen
patent: 4142610 (1979-03-01), Alexander et al.
patent: 4156478 (1979-05-01), Kroeger
patent: 4476965 (1984-10-01), Brown , Jr. et al.
patent: 4570758 (1986-02-01), Hendricks
patent: 4828077 (1989-05-01), Stevens, Jr.

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