公开(公告)号：US3825706A

公开(公告)日：1974-07-23

申请号：US32979173

申请日：1973-02-05

Applicant: DBA SA

Inventor： PAPIAU G

IPC: G01L13/00 ,  B60T17/22 ,  G01L7/16 ,  H01H35/38

CPC classification number: H01H35/38 ,  B60T17/226 ,  G01L7/16

Abstract: A fluid pressure unbalance indicator comprising two separate pistons respectively subjected to forces created by the pressure prevailing in two independent fluid circuits, the pistons acting in opposition to one another and being mounted in a housing so as to move in conjunction with one another and to operate electrical contact members under the influence of a pressure difference which denotes failure of one of the fluid circuits and which produces a force capable of overcoming the force of a resilient system associated with the pistons. In the invention, the resilient system is situated in a region of the housing accessible to both pistons, and each end of the resilient system bears on a fixed portion of the housing and is engageable by the piston subjected to the higher of the fluid pressure forces.

Abstract translation: 流体压力不平衡指示器包括分别受到由两个独立流体回路中存在的压力产生的力的两个分开的活塞，活塞彼此相对地起作用并且被安装在壳体中以便彼此结合运动并且操作 在压力差的影响下的电接触构件，其表示一个流体回路的故障并且产生能够克服与活塞相关联的弹性系统的力的力。 在本发明中，弹性系统位于壳体可接触的两个活塞的区域中，并且弹性系统的每个端部承载在壳体的固定部分上并且可被活塞接合以承受更高的流体压力 。

公开(公告)号：US3800540A

公开(公告)日：1974-04-02

申请号：US3800540D

申请日：1972-06-07

Applicant: DBA SA

Inventor： PAPIAU G

IPC: B60T11/20 ,  F15B7/08

CPC classification number: B60T11/20

Abstract: Double master-cylinder having a body comprising a blind stepped bore in which a stepped piston is slidably mounted to define therein two variable volume pressure chambers adapted to be connected to separate hydraulic brake actuators, a single valve member consisting of an annular sleeve slidably disposed between the small diameter portion of the piston and the bore, and a spring provided between the sleeve and the piston in order to bring the sleeve to bear in fluid-tight manner on the body to close the refill passages communicating the pressure chamber to a brake fluid reservoir.

Abstract translation: 双主缸具有主体，其包括盲梯阶孔，其中阶梯式活塞可滑动地安装在其中以限定适于连接到单独的液压制动致动器的两个可变容积压力室;单个阀构件，其由可滑动地设置在 活塞的小直径部分和孔，以及设置在套筒和活塞之间的弹簧，以便使套筒以流体密封的方式承载在主体上，以封闭将压力室连接到制动流体的再填充通道 水库