Ji Yah Woo Deceased108 Clipper Dr, Belmont, CA 94002

4266640, May 12, 1981

Jul 20, 1979

6/058973

Ji Y. Woo - South Bend IN

The Bendix Corporation - Southfield MI

B60T 812

188363

A wheel cylinder in a brake assembly includes a housing for movably carrying a pair of pistons. An intermediate wall of the housing separates the pair of pistons from each other and cooperates with each piston to substantially form a first chamber facing one of the pistons and a second chamber facing the other piston. An inlet communicates fluid pressure to the chambers via a first path and a second path within the housing. A pressure responsive member is disposed within one of the paths and is biased to a position opening communication through the one path. When the fluid pressure within one of the chambers reaches a predetermined value, the pressure responsive member is movable to restrict fluid communication to the one chamber while the fluid pressure within the other chamber is free to increase in value during actuation of the wheel cylinder.

4386682, Jun 7, 1983

Apr 9, 1981

6/252631

Ji Y. Woo - South Bend IN
Irving R. Ritsema - South Bend IN

The Bendix Corporation - Southfield MI

F16D 55224
F16D 6554

188 718

A disc brake 10 has a caliper 34 including apparatus 52 for retracting the piston 68 of the fluid motor portion 44 of the caliper to a non-braking position when the brake is not applied. Consequently, runout, wobble, or axial movement of the brake disc 12 may space the friction elements 62, 64 of the brake from the friction faces 18, 20 of the brake disc so that the friction elements do not drag on the disc when the brake is not applied.

4500111, Feb 19, 1985

Oct 19, 1983

6/543571

Ji Y. Woo - South Bend IN

The Bendix Corporation - Southfield MI

B60T 106

280688

A suspension assembly couples a wheel assembly (16) and a brake assembly (60) to a frame (10). The suspension assembly includes a support (20) for receiving an axle (24). The axle carries the wheel assembly (16) at one end of the support (20) and forms a drum (46) at the other end of the support (20) for engagement with the brake assembly (60). Therefore, the support (20) separates the wheel assembly (16) from the brake assembly (60) so that the brake assembly (60) brakes the wheel assembly (16) via the axle (24).

4344512, Aug 17, 1982

Feb 20, 1980

6/122942

Ji Y. Woo - South Bend IN

The Bendix Corporation - Southfield MI

F16D 5120
F16D 6556

188 795GE

A duo servo drum brake includes a pair of brake shoes which are movable by a hydraulic actuator during a service brake application to a braking position in engagement with a rotatable member. A strut and parking lever are engageable with respective brake shoes to separate the same during a parking brake application. In order to control a running clearance between the pair of brake shoes and the rotatable member, an extendible assembly is disposed between the pair of brake shoes opposite the hydraulic actuator. The extendible assembly is also responsive to a parking brake application to expand the pair of brake shoes into engagement with the rotatable member.

4336867, Jun 29, 1982

Oct 1, 1979

6/080809

Ji Y. Woo - South Bend IN

The Bendix Corporation - Southfield MI

F16D 5120
F16D 5150

188326

A drum brake assembly includes a pair of brake shoes which are carried by a backing plate and engageable with a hydraulic actuator. The hydraulic actuator is operable to move the pair of brake shoes from a rest position to a braking position. A strut extending between the pair of brake shoes cooperates with a parking arm to move the pair of brake shoes to the braking position during a parking brake application. A support assembly on the backing plate is disposed opposite the hydraulic actuator for the purpose of absorbing braking torque developed by the pair of brake shoes. The support assembly comprises a pair of slots and a lever. The lever is movable in response to movement of the parking arm to adjust the position of the pair of blocks relative to each other. In a first position the blocks are in abutment with the backing plate while in a second position the blocks are free to move a limited amount relative to the backing plate. Moreover, the lever imparts a separating force to the pair of brake shoes via the blocks during a parking brake application to expand the brake shoes radially.

4334599, Jun 15, 1982

Aug 18, 1980

6/179322

Irving R. Ritsema - South Bend IN
Ji Y. Woo - South Bend IN

The Bendix Corporation - Southfield MI

F16D 6502

188 7345

A disc brake includes at least one pin assembly (24) for movably supporting a caliper 14 relative to a torque plate 12. The pin assembly comprises a bolt (54), a sleeve (46) and a pair of arcuate washers (70, 72) which are adapted to accommodate angularity between the pin assembly and the caliper opening (38).