×

DISC BRAKE WEAR MONITOR SYSTEM

  • US 3,593,266 A
  • Filed: 10/16/1969
  • Issued: 07/13/1971
  • Est. Priority Date: 10/16/1969
  • Status: Expired due to Term
First Claim
Patent Images

1. A brake lining wear warning system comprising;

  • a brake pad assembly having a lining backing plate and a lining secured thereto, said lining having a braking surface adapted to Frictionally engage a member to be braked, normally closed passage means in said lining having originally predetermined spacing from said braking surface equal to the predetermined amount of lining wear allowable after which said warning system is to be activated, said passage means being opened by lining wear beyond the allowable amount at any point wherein said passage means is positioned at the originally predetermined spacing, conduit means fluid connecting said passage means to vacuum switch and a vacuum source, an electrical circuit having therein said vacuum switch and a source of electrical energy and a warning indicator controlled by actuation of said vacuum switch to be energized when said vacuum switch is actuated in response to a less than predetermined minimum vacuum in said conduit means at said vacuum switch.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×