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Expired Canadian patentCanada

Overload device for gas turbine engines

CA 1070141 A · Owner: Caterpillar Tractor Co. · Inventors: Davis, Warren W.; Thompson, Leroy R.

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

An overload device in an output gear box of a high speed turbine engine protects the output gears and shaft system of the turbine against damage due to instantaneous high loads imposed on the turbine as, for example, high loads due to out-of-phase paralleling of a generator. The device comprises interleaved friction discs normally compressed together under a predetermined load by a plurality of springbiased clamping bars. When the torque load on the friction discs exceeds a predetermined amount, the discs will slip whereby the torque overload is alleviated.

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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 January 22, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 22, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJanuary 22, 1980
Term endedJanuary 22, 1997
Patent numberCA 1070141 A
Classification (IPC)F16H1/28 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJan 22, 1980Term endedJan 22, 1997

Sources & verification

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