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Expired Canadian patentCanada

Powertrain for power generator

CA 2371694 C · Owner: Deane, Geoffrey F. · Inventors: Dehlsen, James G. P.; Deane, Geoffrey F.

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

Powertrains for high torque, low RPM wind turbines and ocean current turbines. The turbine consists of a large, input power shaft-mounted rotating sun-gear , with stationary powertrains mounted around its periphery. The gear teeth on the sun gear rotate past the teeth on the pinions causing the pinions to turn , and delivering power to each smaller powertrain. Alternatively the , powertrains are attached in a spindle around the perimeter of a main power input drive shaft, and rotate as the shaft rotates. Each input drive shaft to smaller powertrain gearboxes is fitted with a pinion. As the main power input shaft turns, the generators, gearboxes and pinions rotate moving the pinions , …

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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

  • Filed April 27, 2000 and granted January 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 27, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 27, 2022.
  • 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 27, 2000
GrantedJanuary 3, 2012
Term endedApril 27, 2020
Patent numberCA 2371694 C
Classification (IPC)H02K16/00 +2 more

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedApril 27, 2000Patent grantedJan 3, 2012Term endedApril 27, 2020

Sources & verification

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