Brake indicating safety valve

Abstract

Abstract THIS PATENT DISCLOSES A PRESSURE DIFFENTIAL OR BRAKE INDICATING SAFETY VALVE PARTICULARLY ADAPTED FOR USE IN HYDRAULIC BRAKE SYSTEMS HAVING DUAL MASTER BRAKE CYLINDERS. THE VALVE IS ADAPTED FOR USE ON MOTOR VEHICLES HAVING EITHER ALL SHOE, ALL DISCS, OR HYBRID (A BRAKE SYSTEM HAVING DISC BRAKES ON ONE SET OF WHEELS AND SHOE BRAKES ON THE OTHER SET OF WHEELS) BRAKE SYSTEMS. THE PRESSURE DIFFERENTIAL VALVE INCLUDES A TUBULAR BODY HAVING AN AXIALLY EXTENDING BORE AND MOUNTED THEREIN PRESSURE RESPONSIVE MEANS WHICH ARE SLIDABLY DISPOSED IN THE BORE. FIRST AND SECOND HYDRAULIC FLUID INLETS ARE CONNECTED RESPECTIVELY TO OPPOSITE ENDS OF THE PRESSURE RESPONSIVE MEANS AND THE INLETS, OR OTHER APERTURES IN COMMUNICATION THEREWITH, MAY BE CONNECTED BY CONVENTIONAL HYDRAULIC PIPING TO THE FRONT AND REAR BRAKES RESPECTIVELY OF THE BRAKE SYSTE, AND TO THE OUTLETS OF THE DUAL MASTER CYLINDER. SWITCH MEANS ARE CARRIED BY THE PRESSURE RESWITCH ACTUATING MEANS ARE CARRIED BY THE PRESSURE RESPONSIVE MEANS, THERE BEING INDICATING MEANS, IN THE PRESENT INSTANT LIGHTS AND THE LIKE, CONNECTED TO THE SWITCH MEANS. IN ADDITION, THERE ARE MEANS FOR MAINTAINING THE SWITCH ACTUATING MEANS IN ITS ACTUATED POSITION UPON A PREDETERMINED PRESSURE DIFFERENTIAL OCCURRING BETWEEN THE FIRST AND SECOND INLETS WHICH CAUSES THE SWITCH ACTUATING MEANS TO ENGAGE THE SWITCH MEANS. THE VALVE IS ADAPTED TO RECEIVE A METERING VALVE, OR A PROPORTIONING VALVE, OR A COMBINATION OF EACH WITHOUT NECESSITATING MAJOR MODIFICATION.

Inventors

• 👤 Roger E Doerfler

Bibliographic Details