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Expired Canadian patentCanada

Pump

CA 1137814 A · Owner: Nordson Corporation · Inventors: Gardner, James J.

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

Abstract of the Disclosure An improved cartridge-type pump provides inlets on each side of the pump to increase capacity from a material source disposed at one end of the pump housing. Moving pump gears are removed from a pump body to a lower end thereof and wear plates and gear ring define, in combination with a surrounding pump housing, upper and lower inlets of high volume capacity respec-, tively communicating between the material source at one end of the pump and both inlets of the pump. Increased intake to the upper inlet is provided, without internal machining of inlet ports in the lower end plate or the gear plate and even though the gear, plate is partially disposed in the housing …

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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 December 21, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 21, 1999.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 9, 1980
GrantedDecember 21, 1982
Term endedDecember 21, 1999
Patent numberCA 1137814 A
Classification (IPC)F04C2/10 +2 more

Timeline

Timeline From CIPO dates

1981198319851987198919911993199519971999Application filedMay 9, 1980Patent grantedDec 21, 1982Term endedDec 21, 1999

Sources & verification

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