Gm Global Technolgoy Operations, Inc.

Norbert J Green, Jr

Michael William Fanelli

Robert W Hyde

Jerome Albert Limpach

Gregory M Hickey

Carlton Huston Fox, Jr

Michael J Kozak

Irl S Wallace

Donald Jeffrey Moyer

Robert N Dawson

Scott R Leist

A parking brake assembly includes a lever that translates pivoting rotation to sliding movement of a tappet in contact with a braking shoe to effect expansion of the brake shoe against the inside diameter of a rotating element. The rotating element is, in more specificity, a rotor carried by a spindle that is rotatably supported by bearings. The bearings are carried by the actuator housing which additionally carries the lever and tappet of the parking brake assembly.

Wheel brake assembly

A disc brake with a caliper housing having first and second side walls, the first wall having a cavity with a piston slidably mounted therein, the piston having a first shoe for frictional engagement with one of the sides of a rotor, the housing also having a bridge spanning the sides of the rotor and extending from the bridge, the housing having a second wall with an attached second shoe for frictional engagement with the rotor opposite the first shoe. A bracket is connected with the vehicle having first leading and second trailing reaction arms. The caliper is slidably mounted with the bracket arms. Extending the piston from the caliper housing to actuate the brake brings the shoes into engagement with the rotor and causes the inboard shoe to react on the trailing bracket arm and the caliper housing to react in the trailing direction into the leading bracket arm.

Shell disc brake

An electrically actuated brake is provided with an adjustment mechanism to compenate for wear of the brake shoes. The brake in a preferred embodiment includes a motor driven actuator to apply the brake shoes and a first rotative member torsionally associated with a rotor of the motor. A spring returns the brake shoes from an actuated position to a release position causing the first rotative member to rotate in a releasing direction. A second rotative member having a first surface for making torsional transferring engagement with the first rotative member when the first rotative member is rotating in a friction member applying or releasing direction is provided. The second rotative member also has a second surface of a non-torsional transferring engagement. The second surface is exposed to the first rotative member when the first rotative member has rotated in an applying direction beyond a predetermined limit due to wear of the brake shoes. A stop is provided for limiting the retractive rotation of the second rotative member when the first surface of the second rotative member is in torsional engagement with the first rotative member. A compliant radial projection of the second rotative member hits an abutment to bias the second rotative member to expose its first surface to the first rotative member when the second surface of the second rotative member is exposed to the first rotative member.

Electrically actuated electric brake with wear compensating adjuster

Growing community of inventors

Trotwood, OH, United States of America

Norbert J Green, Jr