Back to results
US 2003/0029682 A1Published application
Brake assembly
AssigneePBR Austrailia Pty Ltd
InventorNui Wang
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneePBR Austrailia Pty Ltd
InventorNui Wang
Estimating the term…
A drum brake assembly including a rotatable drum having a radially inner braking surface and a brake shoe of single piece construction and of generally circular form mounted within the drum against a backing plate. The brake shoe has a radially outer face and a friction lining mounted thereon in facing relationship to the radially inner braking surface. Actuator having actuated brake on and released brake off conditions and being operable in the actuated condition to diametrically expand the brake shoe is provided. Positioners are also provided for positioning the brake shoe within the drum when the actuator is in the brake off condition to provide for complete clearance between the outer face of the friction lining and the inner braking surface of the drum. A grinding jig for grinding friction lining is also provided. A brake assembly having a connector for connecting the brake shoe to the backing plate.
A drum brake assembly including a rotatable drum having a radially inner braking surface and a brake shoe of single piece construction and of generally circular form mounted within said drum against a backing plate, said brake shoe having a radially outer face and friction lining mounted thereon in facing relationship to said radially inner braking surface, actuating means having actuated brake on and released brake off conditions and being operable in said actuated condition to diametrically expand said brake shoe, and positioning means for positioning said brake shoe within said drum when said actuating means is in said brake off condition to provide for complete clearance between the outer face of said friction lining and said inner braking surface.
A method of preparing a friction lined brake shoe of single piece construction and of generally circular form, including mounting said brake shoe on supporting means that includes positioning means to position said shoe to simulate the mounting of said brake shoe in a drum brake assembly in a brake off condition, and treating the radially outer face of said friction lining.
Apparatus for preparing a friction lined brake shoe of single piece construction and of generally circular form, said apparatus including supporting means on which said brake shoe is mounted and positioning means to position said brake shoe, the arrangement of said supporting means and said positioning means being such as to simulate the mounting of a brake shoe in a drum brake assembly in a brake off condition, the apparatus further including treating means for treating the radially outer face of said friction lining.
A drum brake assembly including a rotatable drum having a radially inner braking surface and a brake shoe of single piece construction and of generally circular form mounted within said drum against a backing plate, said brake shoe having a radially outer face and friction lining mounted thereon in facing relationship to said radially inner braking surface, an actuator being adapted to actuated a brake on and a released brake off conditions and being operable in said actuated condition to diametrically expand said brake shoe, and a position structure for positioning said brake shoe within said drum when said actuator is in said brake off condition to provide for complete clearance between the outer face of said friction lining and said inner braking surface.
Dependencies are inferred from the claim text.