F - Mech Eng,Light,Heat,Weapons – 16 – D
Patent
F - Mech Eng,Light,Heat,Weapons
16
D
188/139
F16D 55/22 (2006.01) F16D 65/14 (2006.01) F16D 65/56 (2006.01)
Patent
CA 1212636
SLACK ADJUSTER FOR A DISC BRAKE Abstract of the Disclosure A slack adjuster is for a disc brake of the type which includes a disc mounted for rotation about an axle and a caliper brake having a housing mounted on the axle in alignment with a friction surface of the disc. A braking piston is mounted in the housing for axial movement toward and away from the friction surface of the disc. Brake actuation produces rotating movement of a powershaft mounted in the housing which will in turn produce a corresponding axial movement of the braking piston through a non-rotating powershaft nut. An adjusting sleeve is between the piston and the powershaft nut and is threadably coupled to the piston and capable of rotation relative thereto to adjust the axial position of the piston. The adjusting sleeve is capable of rotating in a direction which will cause the piston to be adjusted toward the disc and is prevented from rotating in the opposite direction by a one-way clutch element between the adjusting sleeve and the housing. A lost motion element is between the powershaft and the adjusting sleeve and allows rotation of the powershaft to produce corresponding rotation or the adjusting sleeve after the piston has moved toward the disc through a desired running clearance without having made any frictional contact therewith. The lost notion element employs a force limiting clutch element to prevent corresponding rotation of the adjusting sleeve after the piston makes contact with the fricton surface of the disc and when the powershaft is rotated in a direction to produce movement of the piston away from the disc.
450569
Kirby Eades Gale Baker
Rockwell International Corporation
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