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Expired Canadian patentCanada

Hydraulic puller

CA 1313587 C · Owner: Posi Lock Puller, Inc. · Inventors: Somerville, Dean S.

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

68131-23, Abstract of the Disclosure, The hydraulically powered locking puller device comprises a base assembly about a central axis a camming, assembly circumferentially about the base assembly and an, hydraulic module axially centered within the base assembly. The base assembly has a cylindrical housing wall united to an anchor ring carrying at least two claw members and having an internally threaded cylindrical surface. The camming assembly includes a mooring ring mounted on the housing wall of the base assembly for axial movement therealong and a cam ring axially spaced from a coupler on the mooring ring. The cam ring is in camming relationship to the claw members. The hydraulic module …

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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 February 16, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 16, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 25, 1989
GrantedFebruary 16, 1993
Term endedFebruary 16, 2010
Patent numberCA 1313587 C
Classification (IPC)B25B27/06 +1 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedSep 25, 1989Patent grantedFeb 16, 1993Term endedFeb 16, 2010

Sources & verification

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