Patent Yard Sign in
Expired Canadian patentCanada

Apparatus for periodically testing the operation of safety valves

CA 1138222 A · Owner: Furmanite International Limited · Inventors: Trevisan, Ottavio

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

An apparatus is disclosed for periodically testing the operation of safety valves on pressure apparata or vessels. The apparatus includes a load-bearing structure fixedly arranged with respect to the pressure apparatus, a thrust generating assembly cooperating with the load-bearing structure, and means for gripping the safety valve being tested. It is characterised in that there is provided a dynamometer device cooperating with the thrust generating assembly the dynamometer, device measuring the force applied by the thrust generator to the safety valve being tested.

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 December 28, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 28, 1999.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 4, 1980
GrantedDecember 28, 1982
Term endedDecember 28, 1999
Patent numberCA 1138222 A
Classification (IPC)G01M99/00 +1 more

Timeline

Timeline From CIPO dates

1981198319851987198919911993199519971999Application filedMarch 4, 1980Patent grantedDec 28, 1982Term endedDec 28, 1999

Sources & verification

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