Patent Yard Sign in
Expired Canadian patentCanada

Crimping diameter adjusting valve

CA 1094920 A · Owner: Weatherhead Company (The) · Inventors: Patel, Hiralal V.

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 crimping machine for crimping a metal end fitting onto a flexible hose includes a stationary socket a crimping, die arranged in the socket for axial movement and a hydraulic, actuator. A valve member is provided in a fluid flow passage leading from a pump to the actuator. The distance between the valve member and a piston of the actuator is precisely controlled to control the axial movement of the crimping die relative to the socket.

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 February 3, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 3, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 25, 1978
GrantedFebruary 3, 1981
Term endedFebruary 3, 1998
Patent numberCA 1094920 A
Classification (IPC)B21J9/12 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedApril 25, 1978Patent grantedFeb 3, 1981Term endedFeb 3, 1998

Sources & verification

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