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Expired Canadian patentCanada

Pump with heat exchanger

CA 1332035 C · Owner: Borg-Warner Industrial Products, Inc. · Inventors: Boster, Clark S.

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

The present invention is directed to improvements in a pump of the type having a shaft seal in a seal chamber supplied with seal injection water. The invention involves a support member having an annular recess therein a single, inlet through the support member at one location for the passage of seal injection water into the recess and an, annular injection water distributor ring in the recess. The ring has a plurality of outlets therethrough for the passage of and distribution of water flowing through the inlet into the recess and thereafter into the seal chamber.

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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 September 20, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 20, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 9, 1988
GrantedSeptember 20, 1994
Term endedSeptember 20, 2011
Patent numberCA 1332035 C
Classification (IPC)F01D5/08 +1 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedMarch 9, 1988Patent grantedSep 20, 1994Term endedSep 20, 2011

Sources & verification

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