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Expired Canadian patentCanada

Steam turbine control apparatus

CA 1193452 A · Owner: General Electric Company · Inventors: Ipsen, Peter G.

CIPO record

Overview

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

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Abstract From the Canadian patent

Abstract of the Disclosure Control apparatus is disclosed for limiting overspeed in a steam turbine following a sudden loss in load. The apparatus includes at least one valve disposed in the steam conduit interconnecting higher and lower pressure sections of the turbine and an actuator for controlling operation of the valve between a fully open position and a pressure-relief position wherein the valve functions as a pressure relief valve. During normal operation, the valve is maintained in the fully open position. On receipt of a turbine overspeed signal the, valve is actuated to the pressure relief position and a volume of steam at a preselected pressure necessary to, open the valve, is …

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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 17, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 17, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 10, 1982
GrantedSeptember 17, 1985
Term endedSeptember 17, 2002
Patent numberCA 1193452 A
Classification (IPC)F01D17/00 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedSep 10, 1982Patent grantedSep 17, 1985Term endedSep 17, 2002

Sources & verification

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