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Expired Canadian patentCanada

Pipe connector device

CA 1283140 C · Owner: Westman, Stig · Inventors: Westman, Stig

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 briefly concerns a device for connecting individual pipes (22, 23) to pipe lines which device includes, a male part (24) and a female part in a direct connection to each pipe (22, 23), the pipes having a substantially complementary design to fit into each other. The male part (24) comprises an outwardly conical portion (26) having a decreasing diameter towards the adjacent end (28) of the pipe (23), and the female part (30) comprises an inwardly conical portion having an increasing diameter towards the pipe end. Both conical portions are provided with a circumferentially extending groove (29, 33) respectively which, when the male, part (24) is inserted to a …

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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 April 16, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 16, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 27, 1986
GrantedApril 16, 1991
Term endedApril 16, 2008
Patent numberCA 1283140 C
Classification (IPC)F16L37/14 +1 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedNov 27, 1986Patent grantedApril 16, 1991Term endedApril 16, 2008

Sources & verification

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