Robert B. Temple - Granger IN Donald D. Johannesen - South Bend IN
Assignee:
Allied-Signal Inc. - Morristown NJ
International Classification:
F16B 2118
US Classification:
411522
Abstract:
The retainer assembly (10) comprises a longitudinally extending retainer body (12) having an enlarged diameter or head member (14) at one end and an arrow-shaped or flared member (16) at the other end. A V-shaped leaf spring (20) has an opening (24) at the bottom of the V-shaped opening (22) which receives the retainer body (12) so that the spring (20) is disposed between the head member (14) and a surface (31) of a first member (30). The retainer body (12) extends through an opening (32) in the first member (30) and the flared member (16) is resiliently captured within a resilient receiving member (50) disposed within an opening (46) of the second member (40). The opening (46) in the second member (40) is in a second surface (44) disposed apart from a first surface (42) of the second member (40) which engages the first member (30). The receiving member (50) flexibly traps the flared member (16) after insertion therethrough so that the leaf spring (20) biases the first member (30) into engagement with the second member (40).
Donald D. Johannesen - South Bend IN Joseph R. Williamson - South Bend IN
Assignee:
The Bendis Corporation - Southfield MI
International Classification:
F16D 55224
US Classification:
188 7343
Abstract:
A floating-caliper disc brake (10) includes a non-rotating torque member (36). A caliper (22) straddles the brake disc (12) and is carried in fixed radial and circumferential position by the torque member (36). Axial movement of the caliper (22) relative to the brake disc (22) is provided for by roller members (58) between the caliper (22) and the torque member (36). The torque member (36) and the caliper (22) both have axially-extending grooves (52, 54) which in registry cooperate to define axially-extending apertures (56) between the caliper and the torque member. The roller members (58) are received in the axially-extending apertures (56) between the caliper (22) and the torque member (36). The roller members (58) are the sole torque-transmitting structure between the caliper (22) and the torque member (36). Rolling of the caliper (22) on the roller members (58) provides for axial movement of the caliper (22) relative to the brake disc (12) and the torque member (36).
Dash Pot For A Hydraulic Actuator For A Drum Brake
A drum brake assembly provides a pair of brake shoes which are movable by a hydraulic actuator to a braking position. The hydraulic actuator is carried by a backing plate and the pair of brake shoes is movable relative to the backing plate. A piston is slidably mounted within a bore on the hydraulic actuator and pressurized fluid communicated to the bore acts against the piston to move the piston and pair of brake shoes. A partition is also disposed within the bore to substantially define a secondary chamber which receives pressurized fluid from the bore. The partition is movably disposed within the bore and resiliently engaged with the piston so that increased pressure within the bore is transmitted to the piston via the partition and the resilient engagement. Moreover, the partition controls venting of the secondary chamber so that upon contact of the pair of brake shoes with a drum, backlash or retraction of the pair of brake shoes is limited.
Irving R. Ritsema - South Bend IN Donald D. Johannesen - South Bend IN
Assignee:
The Bendix Corporation - Southfield MI
International Classification:
F16D 6512
US Classification:
188218XL
Abstract:
A rotor for a disc brake assembly includes at least two members (40, 42) opposing a pair of friction elements (16, 18). The members are stamped to form projections (46) in abutment with each other to join the members together. The projections (46) also space the members from each other to form a clearance (58) and a connecting portion (44) cooperates with some of the projections (46) to prevent rotation between the connecting portion (44) and the two members (40, 42).
Gary W. Preston - South Bend IN Donald D. Johannesen - South Bend IN William J. Kestermeier - South Bend IN
Assignee:
The Bendix Corporation - Southfield MI
International Classification:
F16D 6502
US Classification:
188 735
Abstract:
A disc brake includes a pair of friction elements which are movable by a hydraulic actuator and a caliper into engagement with the disc to effectuate braking. A torque member movably supports the caliper. The hydraulic actuator includes a piston cup and an anti-rattle spring is disposed within the piston cup and releasably engaged with one of the pair of friction elements to eliminate noise generated between the one friction element and the caliper, the torque member, or the piston cup. In particular, the anti-rattle spring comprises a split ring having a polygonal circumference. The split ring is contracted radially for insertion into the piston cup and sides of the polygonal surface are expanded radially to receive the one friction element. A pair of tabs on the split ring releasably engages the one friction element to retain the same in engagement with the piston cup.
Drum Brake Wheel Cylinder With Internal Automatic Adjustment
The drum brake wheel cylinder (20) comprises a longitudinal through bore (16) having therein a pair of opposed pistons (22, 24) with each piston (22, 24) engaging a respective web (12, 14) of an adjacent drum brake shoe. A first piston (22) includes a longitudinal opening (32) receiving therein one end (62) of a friction rod (60), and the second piston (24) includes a recess opening (27) receiving therein the second end (64) of the friction rod. A friction latch adjusting lever (50) has a central opening (52) receiving therethrough the friction rod (60) and is located diagonally relative to a longitudinal axis of the friction rod (60). A spring (70) is located about the friction rod (60) with one end biasing the friction latch adjuster lever (50) against a wall (34) of the first piston (22) and the other end of the spring engaging an abutment (27B) in the recess opening (27 ). The first piston (22) includes a through opening (36) receiving slidably therein an adjuster release pin (40) which extends into a slot opening (56) of the friction latch adjusting lever (50). A running clearance (X) is defined between a head (66) at the second end (64) of the friction rod (60) and the abutment (27B) at the opening recess (27).
Clip-On Automatic Adjuster Strut Lever For A Drum Brake
An automatically adjustable strut (60) is mounted adjacent a drum brake (10) wheel cylinder (20) and strut forks (62, 66) bear against a pair of brake shoes (12, 14) and a parking brake lever (50). The strut (60) extends automatically according to wear of the brake shoes (12, 14) and comprises a nut-and-bolt system operated by a pawl (75) engaging teeth (84) of a nut (80). The pawl (75) is part of a clip-on automatic adjuster strut lever (100) mounted resiliently upon a body (68) of the strut (60). The strut lever (100) includes a loading arm (108) which resiliently engages the body (68) of the strut (60), so that proper operational loading is effected by the pawl (75) upon the nut (80). The strut lever (100) also includes a spring lever arm (120) which engages a rocker lever (90) that moves the lever arm (120) and pawl ( 75) when the brake (10) is released toward an at-rest position, and then permits movement of the pawl (75) in an opposite direction when the brake (10) is applied. The strut lever (100) is mounted slidably onto the body (68) of the strut (60) by way of a base member (104) having an opening (106) whose circumference has a portion (113) received within a groove (65) in the body (68) of the strut (60).
Donald D. Johannesen - South Bend IN Raymond P. Haluda - South Bend IN
Assignee:
The Bendix Corporation - Southfield MI
International Classification:
F16D 6502
US Classification:
188 7345
Abstract:
A floating-caliper disc brake (1) includes a non-rotating torque member (36) which carries the caliper (22) in fixed radial position relative to the disc (12) via a pair of pins (56, 58). The torque member and caliper each have matching grooves (44, 46, 48, 50) which, when placed in registry, define a pair of apertures (52, 54) between the caliper and the arms (38, 40) of the torque member. The pins are complementary in cross-section to the shape of these apertures so as to space apart the caliper and the torque member when the pins are inserted into the apertures. Brake torque is transferred from the caliper to the torque member solely through the pins. Sliding of the caliper along the pins provides for axial movement of the caliper relative to the torque member and brake rotor, but the caliper is otherwise restrained from movement in the radial and circumferential directions. One of the pins (58) includes a pair of opposed wedge-defining members (66, 68). The wedge-defining members are resiliently biased into engagement with each other to eliminate radial and circumferential clearances between the caliper and torque member.
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