公开(公告)号：US3625315A

公开(公告)日：1971-12-07

申请号：US3625315D

申请日：1969-10-15

Applicant: DBA SA

Inventor： LAVERDANT BERNARD

IPC: B60T11/04 ,  B60T1/06 ,  F16D55/224 ,  F16D65/14 ,  F16D65/56 ,  F16D55/18

CPC classification number: F16D55/224 ,  F16D65/567 ,  F16D2125/60

Abstract: In an emergency and parking mechanical control braking system there is inserted a heavy resilient means between the control lever or pedal and the mechanical braking mechanism of the brakes. Such resilient means is used to store energy restituted to apply the brakes when they are no longer hydraulically applied. The invention applies notably to braking systems comprising tilting caliper disc brakes.

公开(公告)号：US3548973A

公开(公告)日：1970-12-22

申请号：US3548973D

申请日：1968-11-13

Applicant: DBA SA

Inventor： LAVERDANT BERNARD

IPC: F16D55/22 ,  F16D55/228

CPC classification number: F16D55/22

公开(公告)号：US3638763A

公开(公告)日：1972-02-01

申请号：US3638763D

申请日：1970-04-22

Applicant: DBA SA

Inventor： LAVERDANT BERNARD

IPC: F16D65/14 ,  F16D65/56 ,  F16D55/26

CPC classification number: F16D65/18 ,  F16D65/567 ,  F16D2121/02 ,  F16D2121/14 ,  F16D2123/00 ,  F16D2125/36 ,  F16D2125/40 ,  F16D2127/007

Abstract: A parking actuator for a disc brake is disclosed which includes a pair of relatively rotatable actuating members. Oppositely facing recesses having inclined sides are provided in each of the members, and force-transmitting elements are received in these recesses. One of the members carries a nut which advances into engagement with the actuating piston of the brake when the one member is rotated relative to the brake housing. When a parking application is effected, the one member is first rotated relative to the housing to move the nut into engagement with the piston, whereupon the other member is rotated relative to the one member to drive the force-transmitting elements up the sides of the recesses to urge the one member and the piston in a brakeapplying direction.

Abstract translation: 公开了一种用于盘式制动器的停车致动器，其包括一对相对可旋转的致动构件。 在每个构件中设置有具有倾斜侧面的相对面的凹部，并且力传递元件容纳在这些凹部中。 当一个构件相对于制动器壳体旋转时，其中一个构件带有螺母，该螺母进入与制动器的致动活塞接合。 当实现停车应用时，一个构件首先相对于壳体旋转以将螺母移动成与活塞接合，于是另一个构件相对于一个构件旋转，以将驱动力传递元件向上 凹部以沿制动施加方向推压一个构件和活塞。

公开(公告)号：US3576236A

公开(公告)日：1971-04-27

申请号：US3576236D

申请日：1969-02-28

Applicant: DBA SA

Inventor： LAVERDANT BERNARD

IPC: F16D65/18 ,  F16D65/14 ,  F16D65/56 ,  B60T11/10

CPC classification number: F16D65/567 ,  F16D65/18 ,  F16D2121/02 ,  F16D2121/14 ,  F16D2123/00 ,  F16D2125/26

Abstract: A tandem hydraulic brake actuator having in a bore a brake actuating piston responsive to a first hydraulic control pressure, a floating piston responsive to the pressure differential between said first and second control pressures so as to move said control piston in a brake-applying direction in the event of a failure in said first control pressure, a slack adjuster operatively provided between said pistons and means operative to prevent actuation of said floating piston as long as the pressure differential acting thereon is below a predetermined value.

公开(公告)号：US3572476A

公开(公告)日：1971-03-30

申请号：US3572476D

申请日：1969-01-23

Applicant: DBA SA

Inventor： LAVERDANT BERNARD

IPC: F16D51/18 ,  F16D65/58

CPC classification number: F16D51/18

Abstract: A drum brake is disclosed which includes a lever pivotally attached to one of the shoes. The lever has a hooked end which is attached to one end of a return spring which is stretched between the shoes. A cam member is rotatably mounted on the one shoe and includes an eccentric mounted thereon which engages a slot in the lever. Rotation of the cam member moves the lever from a first position in which the return spring is relaxed to a second position in which the spring is stressed to exert a force on the shoes. The cam member is accessible from the exterior of the brake so that an appropriate tool may be used to rotate the cam member.