Title:
DISC BRAKE
Document Type and Number:
WIPO Patent Application WO/2012/175355
Kind Code:
A3
Abstract:
A multi-plate disc brake has interleaved rotatable and non-rotatable brake discs (11) within a brake housing (13) and a ball and ramp type brake actuator (12) comprising first and second relatively rotatable annular actuator discs (20, 21) with actuator balls (22) therebetween located in circumferentially ramped pockets (20a, 21a) on opposing faces of the actuator discs. A wedge-shaped actuator member (23) has an actuating means (24A, 24B) to displace the actuator member between confronting abutments (20b, 21b) on the respective actuator discs to relatively rotate the discs to cause the balls to rise up the ramped pockets and hence expand the actuator axially to move the brake discs (11) into engagement. Cooling oil is supplied into the brake housing through the wedge-shaped actuator member (23) when the brake is engaged.
Inventors:
BAYER KLAUS (DE)
SCHNUR EDUARD (DE)
SCHNUR EDUARD (DE)
Application Number:
PCT/EP2012/060973
Publication Date:
April 11, 2013
Filing Date:
June 11, 2012
Export Citation:
Assignee:
BAYER KLAUS (DE)
AGCO INT GMBH (CH)
SCHNUR EDUARD (DE)
AGCO INT GMBH (CH)
SCHNUR EDUARD (DE)
International Classes:
F16D65/853; F16D55/14; F16D65/22
Foreign References:
| EP0558283A1 | 1993-09-01 | |||
| DE9109201U1 | 1991-09-19 | |||
| US2883008A | 1959-04-21 | |||
| DE8808462U1 | 1989-10-26 |
Attorney, Agent or Firm:
WHITE, Andrew (Abbey Park StoneleighKenilworth, Warwickshire CV8 2TQ, GB)
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