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Expired Canadian patentCanada

Apparatus and method for closed-loop control of reactor power in minimun time

CA 1309516 C · Owner: Bernard, John A. Jr. · Inventors: Bernard, John A. Jr.

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Abstract From the Canadian patent

Closed-loop control law for altering the power level of nuclear reactors in a safe manner and without overshoot and in minimum time. Apparatus is provided for moving a fast-acting control element such as a control rod or a control drum for altering the nuclear reactor power level. A computer computes at short time intervals either the function:, or the function: These functions each specify the rate of change of reactivity that is necessary to achieve a specified rate of change of reactor power. The direction and speed of motion of the control element is altered so as to provide the rate of reactivity change calculated using either or both of these functions thereby resulting in the …

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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 October 27, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 27, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 30, 1987
GrantedOctober 27, 1992
Term endedOctober 27, 2009
Patent numberCA 1309516 C
Classification (IPC)G21C7/30 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedDec 30, 1987Patent grantedOct 27, 1992Term endedOct 27, 2009

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