Brakes – Position adjusters – Slack
Patent
1985-11-15
1986-11-18
Butler, Douglas C.
Brakes
Position adjusters
Slack
74110, 188 726, 188343, F16D 6538
Patent
active
046230475
ABSTRACT:
Disclosed is an automatic brake adjustment assembly (50) for maintaining a desired disengaged clearance (c) between a frictional brake lining (17) and a moveable object to be braked. Assembly (50) includes a cam member (2) that is moved in opposite axial directions upon the respective engagement and disengagement of the brake by the operator causing a cam follower (10) to move a nut (16) in corresponding opposite axial directions which in turn is threadingly engaged with and operates to move a piston (18) in opposite axial directions along a frame (24) and accordingly cause brake lining (17) to move towards and away from the object to be braked. Cam member (2) carries a spring force generation member in the form of rack (38) that is loosely held until the axial movement of cam member (2) exceeds a predetermined distance (n) above which a portion of a ramp (34) of rack (38) engages lip (33) of at least one pin (32) fixed to frame (24) and restrains rack (38) sufficiently that an end thereof is able to engage and rotate gear (12) which, in turn, rotates nut (16) which advances piston (18) and liner (17) towards the object to be braked a distance sufficient to maintain desired clearance (c).
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patent: 3966028 (1976-06-01), Anderson et al.
patent: 4019612 (1977-04-01), Mathews et al.
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patent: 4088206 (1978-05-01), Garrett et al.
patent: 4235312 (1980-11-01), Garrett et al.
patent: 4351419 (1982-09-01), Garrett et al.
patent: 4535875 (1985-08-01), Ingram et al.
patent: 4553646 (1985-11-01), Carre et al.
Butler Douglas C.
Chrow A. E.
Eaton Corporation
Grace C. H.
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