Patent Yard Sign in
Expired Canadian patentCanada

Quick release valve

CA 1252494 A · Owner: Bendix Commercial Vehicle Systems Llc · Inventors: Goodell, David J.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

A quick release valve for a vehicle fluid pressure braking system includes a housing having inlet exhaust and delivery ports. A bead circumscribes the inlet port to provide a valve seating area for a flexible diaphragm within the valve housing, and the exhaust port includes a projecting portion which preloads the flexible diaphragm into engagement with the bead circumscribing the inlet port. Accordingly, pressure variations between the ports cannot force the flexible diaphragm to vibrate to create an undesirable honking noise. Furthermore the, circumferentially extending bead assures a pressure-tight seal with the flexible diaphragm, and also establishes a predetermined sealing area for the …

Read the whole patent

Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted April 11, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 11, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 19, 1985
GrantedApril 11, 1989
Term endedApril 11, 2006
Patent numberCA 1252494 A
Classification (IPC)F16K7/17 +2 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedJune 19, 1985Patent grantedApril 11, 1989Term endedApril 11, 2006

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.