Patent Yard Sign in
Expired Canadian patentCanada

Air pressure brake arrangement for tractor and semi- trailer combinations

CA 1085895 A · Owner: Midland-Ross Corporation · Inventors: Gute, Robert M.

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

Abstract of the Disclosure, A tractor-trailer air-pressure brake system which includes a tractor protection control valve, a parking valve and a, trailer fill valve of special design provided for the purpose of achieving a desired non-confusing pattern of control positions whereby safety and convenience of brake operation is enhanced.

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 September 16, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 16, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 15, 1979
GrantedSeptember 16, 1980
Term endedSeptember 16, 1997
Patent numberCA 1085895 A
Classification (IPC)B60T15/00

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Application filedNov 15, 1979Patent grantedSep 16, 1980Term endedSep 16, 1997

Sources & verification

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