Sealed electromagnetic brake

Details Sealed electromagnetic brake Sealed electromagnetic brake

1998-11-17

2000-10-03

Butler, Douglas C.

Brakes

Operators

Spring

188 723, B60T 1304

Patent

active

061259756

ABSTRACT:
An electromagnetic disk brake is compact, self-sealing, self-contained, has relatively few components, and is relatively easy to fabricate and to install when compared to traditional electromagnetic disk brakes. Self-containment and self-sealing are achieved by providing a skirt on the field cup that extends over the remaining moving components of the brake and that is attached, preferably by a press-fit, to a reaction plate at the inner end of the brake. The need for stand-offs to set the air gap of the brake can be eliminated by suitable control of the press-fitting of the field cup onto the reaction plate. For electric motor braking applications, the reaction plate can form the endbell of the electric motor, thereby combining the endbell, mounting plate and reaction plate in a single plate. Simplicity and ease of assembly of a spring-applied brake are enhanced further by employing a single compression spring at the center of the brake rather than a plurality of peripherally-spaced springs. Finally, in applications in which the brake includes a manual release lever, the brake may incorporate an improved release lever anti-rattle arrangement.

REFERENCES:
patent: 4982825 (1991-01-01), Sekella
patent: 5368138 (1994-11-01), Kuivamaki
patent: 5796192 (1998-08-01), Riepl
patent: 5915507 (1999-06-01), Maurice et al.

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