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Expired Canadian patentCanada

Pumps

CA 1107606 A · Owner: S.R.M. Hydromebanik Aktiebolag · Inventors: Norberg, Nils A.; Ahlen, Karl G.

CIPO record

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Drawings and full text

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

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Abstract From the Canadian patent

A fluid system, especially for a transmission having a hydrodynamic torque converter and a mechanical change speed gear box downstream therefrom. For supplying pressurized fluid to the working chamber of the torque converter the clutches and brakes, of the torque converter and the servomotors which control the gear steps of the downstream mechanical change speed gear box there is provided a pressure system having first and second low pressure pumps and preferably an auxiliary high pressure pump. The first low pressure pump delivers fluid continuously for delivery to the working chamber of the torque converter and to the servomotors. The second low pressure pump can deliver pressurized fluid …

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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 August 25, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 25, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 21, 1979
GrantedAugust 25, 1981
Term endedAugust 25, 1998
Patent numberCA 1107606 A
Classification (IPC)F15B9/16

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedAug 21, 1979Patent grantedAug 25, 1981Term endedAug 25, 1998

Sources & verification

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