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Expired Canadian patentCanada

Chip remover for drilled and/or tapped holes

CA 1131948 B · Owner: Kearney & Trecker Corporation · Inventors: Joerger, John R.

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

A compressed air conduit is mounted adjacent to a machine tool spindle and is coupled to a duct in a toolholder when the toolholder is clamped in a toolholder socket on the end of the spindle. The toolholder has a hollow probe projecting axially therefrom which is coupled at one end to the toolholder duct and has a nozzle at its other end. The probe is inserted into a hole in a workpiece by the machine tool positioning mechanism. Compressed air is then forced through the duct in the toolholder and out the nozzle to blow chips and coolant out of the hole. - 1A -

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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 July 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 15, 1997.
  • 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 1, 1978
GrantedJuly 15, 1980
Term endedJuly 15, 1997
Patent numberCA 1131948 B
Classification (IPC)B23Q1/00

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedMay 1, 1978Patent grantedJuly 15, 1980Term endedJuly 15, 1997

Sources & verification

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