Brakes – Operators – Spring
Patent
1996-06-28
1997-11-11
Butler, Douglas C.
Brakes
Operators
Spring
188 723, 188216, 188196R, 188 717, 164108, B60T 1304
Patent
active
056853980
ABSTRACT:
A brake (30) includes a magnetically permeable body (38) having a pole face (40), an armature (42) axially movable toward and away from the pole face, an energization coil (44) energizable to magnetically attract the armature toward the pole face, biasing members (50) biasing the armature away from the pole face, a pressure plate (64) mounted to the body and axially spaced from the pole face, a friction disc (66) between the armature and the pressure plate and keyable to an axially extending rotary shaft (36), such that upon deenergization of the coil, the biasing members bias the armature to a braking position pushing the friction disc against the pressure plate to stop rotation of the disc and shaft, the armature in the braking position defining an air gap (80) between the pole face and the armature, and such that upon energization of the coil, the armature is pulled through the gap toward the pole face to a released position releasing the disc and permitting rotation of the shaft. The body includes a housing shell (82) having a plurality of magnetically permeable segments (84, 86, 88) breaking up eddy currents and enabling faster brake response. An air gap adjustment mechanism (180) is adjustable to vary the axial distance from the pressure plate to the pole face to take up and compensate friction disc wear and maintain the air gap within a given tolerance as the friction disc wears with use. A torque adjustment mechanism (250) is adjustable to vary the bias of the biasing members biasing the armature away from the pole face, to vary braking torque. A release mechanism (310) includes pivot-bases (316, 318) with radially inwardly extending tabs (320, 322) for engaging and pushing the armature toward the pole face and against the bias of the biasing members, for manual release of the brake.
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.
patent: 5186287 (1993-02-01), Lindner et al.
patent: 5259486 (1993-11-01), Deane
patent: 5421436 (1995-06-01), Lindner et al.
patent: 5433300 (1995-07-01), Barlow et al.
patent: 5535857 (1996-07-01), Barlow
patent: 5620065 (1997-04-01), Baker et al.
Kebco Spring-Set Brakes, Combistop, Kebco, Inc., 14700 Martin Dr., Eden Prairie, MN 55344.
Lenze Power Transmission -Spring applied brakes with electromagnetic release, 14.92.32 US, Lenze Power Transmission, 175 Route 46 West, Fairfield, NJ 07004.
Binder -The Power of Magnetism, Binder Magnete GmbH, Monchweilerstrasse 1, D-78048 Villingen-Schwenningen.
Baker William A.
Marshall Jeffrey F.
Poker Gene W.
Warnke David J.
Butler Douglas C.
Rexnord Corporation
LandOfFree
Fast response adjustable brake does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fast response adjustable brake, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fast response adjustable brake will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1222247