Robert Boschgmbh

Alliedsignal Inc.

Glenn Gustave Brown

Thomas Edwin Demoise, Jr

A disc brake having an anchor member with first and second grooves that receive first and second ears on a backing plate to align a friction surface of a friction pad with a rotor. A first slipper spring is secured to the anchor and located between the first groove and the first ear. A second slipper spring is secured to the anchor and located between the second groove and the second ear. The first and second ears correspondingly slide on the first and second slipper springs in response to an input force being applied to move the backing plate toward a rotor to bring the friction surface into engagement with the rotor during a brake application. Each of the first and second slipper springs is characterized by a base with parallel top and bottom side walls that extends therefrom. The top side wall has a lip thereon that engages the anchor to position the base in a groove. The bottom side wall has an arm that extends therefrom along a plane that forms an angle of less than 90 degrees with respect to the base and second wall. The arm tangentially engages a single point contact on the backing plate to resiliently urge the ears away from the grooves to define a first gap between the ear and the base of each slipper and to resiliently urge the ear into engagement with the top side wall to define a second gap between the ear and the bottom side wall such that the backing plate slides in the first and second slipper springs without binding while a radial component of the tangential resilient engagement attenuates movement of the backing plate caused by vibration of the backing plate.

Disc brake

Caliper for a disc brake

The disc brake (10) comprises a support member (12) having horizontal (11C) and vertical (11A) surfaces intersecting at chamfered corner surfaces (11B) forming torque receiving portions (11B). The caliper (20) of the disc brake (10) has a top central opening (13) comprising sloped side walls (15) intersecting with sloped top inner walls (17) of the caliper (20). Friction pad backing plates (26, 28) include circumferentially spaced apart lateral projections (21) each having a chamfered corner surface (2B) which engages the corresponding chamfered corner surface (11B) of the support member (12), and a radially outwardly extending extension (27) having a V-shaped groove (29) engaged by a unitary leaf pad spring (40). The unitary leaf pad spring (40) comprises a generally H-shaped spring (40) having a central body portion (41) forming a depending longitudinal rib (41) and a pair of opposite outwardly extending multiple bend change-of-direction arms (42) at each end of the central body portion (41), each arm (42) terminating in a radially outwardly extending finger terminal end (43). The terminal ends (43) of the spring (40) engage the sloped top inner walls (17) of the caliper (20) and the depending longitudinal rib (41) engages the grooves (29) of the extensions (27) to bias the chamfered corner surfaces (2B) of the lateral projections (21) into engagement with the torque receiving portions (11B) of the support member (12).

Growing community of inventors

Niles, MI, United States of America

Glenn Gustave Brown