Brakes – Position adjusters – Slack
Patent
1988-05-12
1989-08-01
Butler, Douglas C.
Brakes
Position adjusters
Slack
188 7962, 188196V, 188196M, F16D 6556
Patent
active
048527025
ABSTRACT:
An automatic adjuster for the operation gap of a brake, comprising a piston slidably fitted in a cylinder, an adjusting nut supported in contact with the outer end of the piston the adjusting nut being rotatable relative to the piston, an unrotatable adjusting screw supporting a brake friction member at the outer end of the screw and engaged with the internal thread of the nut at the external thread to form a non-reversible screw-thread connection, the adjusting screw and the adjusting nut cannot rotate relative to each other by any force acting to the non-reversible screw-thread connection in the axial direction thereof, a drive screw connected to the cylinder through a friction clutch and engaged with the external thread of the nut at the internal thread to form a reversible screw-thread connection which has a backlash corresponding to the operation gap, the drive screw and the adjusting nut can rotate relative to each other by a force acting to the reversible screw-thread connection in the axial direction thereof, and a waved spring for elastically pushing the drive screw in the axial direction thereof to urge the engagement of the clutch.
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Akebono Brake Industry Co. Ltd.
Butler Douglas C.
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