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Expired Canadian patentCanada

Collet chuck

CA 1110437 A · Owner: Morawski, London T. Trustee Under The Living Trust Agreement · Inventors: Morawski, London T.

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 collet chuck for gripping a workpiece around the internal diameter thereof having a collet sleeve expanded and contracted by axial movement over a tapered nose cone at the forward end of a collet expander. The collet sleeve is connected by a plurality of axially extending pins with a collet puller plate. The collet puller plate is guided for axial movement and prevented from cocking relative to the rotary axis of the chuck by means of a pilot pin on the puller plate slidably mounted in a pilot bore on the expander member of the chuck. ------------ 0 -----------

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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 October 13, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 13, 1998.
  • 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 29, 1979
GrantedOctober 13, 1981
Term endedOctober 13, 1998
Patent numberCA 1110437 A
Classification (IPC)B23B31/40

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedNov 29, 1979Patent grantedOct 13, 1981Term endedOct 13, 1998

Sources & verification

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