Dual master brake cylinder with warning signal system

Claim 1

IN COMBINATION WITH A DUAL MASTER BRAKE CYLINDER FOR ACTUATING VEHICULAR FRONT AND REAR WHEEL BRAKE CYLINDERS VIA SEPARATE FLUID-TRANSMITTING LINES, RESPECTIVELY, NORMALLY UNDER A PREDETERMINED RESIDUAL PRESSURE: A FLUID-COMPENSATING VALVE DEVICE OPERATIVELY COMMUNICATING WITH SAID FLUID LINES, SAID VALVE DEVICE HAVING A VALVE ELEMENT MOVABLE UNDER A PRESSURE DIFFERENTIAL CREATED BY LOSS OF FLUID FROM ONE OR THE OTHER OF SAID FLUID LINES, WITHIN A FLUID COMPENSATING RANGE DEFINED SUBSTANTIALLY BY TWO OPPOSING EXTREMES; SWITCH MECHANISM HAVING INTERPOSITION WITH RESPECT TO AN ENERGIZABLE ELECTRIC CIRCUIT AND PROVIDED WITH AN ELEMENT NORMALLY DISPOSED IN OPENCONTACT CONDITION WHEN SAID VALVE ELEMENT IS MOVABLY POSITIONED WITHIN ITS COMPENSATING RANGE SHORT OF SAID EXTREMES, AND ACTUATABLE TO CLOSED-CONTACT CONDITION; AN ENERGIZABLE SIGNALING ELEMENT IN SAID CIRCUIT AND CONTROLLABLE BY SAID SWITCH ELEMENT; AND A PAIR OF SPACED CONTROL PORTIONS ON SAID VALVE ELEMENT SELECTIVELY ENGAGEABLE WITH SAID SWITCH ELEMENT TO EFFECT ACTUATION THEREOF TO CLOSED-CONTACT CONDITION TO ENERGIZE SAID SIGNALING ELEMENT UPON SAID VALVE ELEMENT MOVING TO ONE OR THE OTHER OF ITS EXTREMES AS A FUNCTION OF SAID PRESSURE DIFFERENTIAL EXISTING IN SAID FLUID LINES, AND THEREBY INDICATING THAT ONE OR THE OTHER OF SAID FLUID LINES IS LOSING FLUID.