The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 30, 1976
Filed:
Nov. 14, 1974
Roland Muterel, Bessancourt, FR;
Societe Anonyme D.B.A., Paris, FR;
Abstract
A switch apparatus for detecting an imbalance condition between a first fluid circuit and a second fluid circuit. The switch apparatus has a housing with a bore therein in which a sleeve is located. The sleeve has a peripheral section which is electrically non-conductive and a central bore therethrough with a first diameter and a second diameter. A first piston is located in the first diameter and a second piston is located in the second diameter. A pin is connected to the second piston to limit the movement thereof in the central bore. When a pressure imbalance occurs, the sleeve will move and allow a plunger to move off the non-conductive peripheral surface to complete an electric circuit to inform an operator of a potential brake system failure.