Patent Yard Sign in
Expired Canadian patentCanada

Error detection member for an overspeed governor

CA 1284751 C · Owner: Alliedsignal Inc. · Inventors: Tallman, Jack A.

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

In the fuel management system having an electronic computer (36) for operating a metering valve (50) through which fuel is supplied to operate a turbine engine (10). A mechanical governor (116) responsive to the rotation of a turbine by the combustion of fuel supplied to chamber (16) allows a portion of the fuel supplied to the metering valve (50) to return to a pump supply (30) when the rotational speed of the shaft (20) connected to turbine (18) exceeds a preset valve. An error detection member (440) responds to a mismatch between the force output of a flyweight (130) and a speed feedback roller (408) to prevent the return of the entire quantity of fuel to the pump supply (28) and thereby …

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 June 11, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 11, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 18, 1988
GrantedJune 11, 1991
Term endedJune 11, 2008
Patent numberCA 1284751 C
Classification (IPC)G05D13/66 +2 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedMay 18, 1988Patent grantedJune 11, 1991Term endedJune 11, 2008

Sources & verification

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