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Expired Canadian patentCanada

Build-up spraying apparatus

CA 1212227 A · Owner: Kyushu Tetsudo Kiki Mfg. Co. Ltd. · Inventors: Hayashi, Mitsuji; Endo, Hideo; Sasaki, Shigeru

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 build-up spraying apparatus is disclosed which is capable of positional adjusting the spreading rate of build-up metal powder along the spreading direction to satisfactorily carry out partial or local build-up as well as uniform build-up as desired. The build-up spraying apparatus includes a fluid control device for spreading build-up metal powder having a pair of control gas infection nozzles formed at the both sides of the interior thereof and a control gas switching cycle setting means for supplying two systems of control gas to the fluid control device at a predetermined cycle.

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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 7, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 7, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 5, 1984
GrantedOctober 7, 1986
Term endedOctober 7, 2003
Patent numberCA 1212227 A
Classification (IPC)B05B7/16 +2 more

Timeline

Timeline From CIPO dates

1985198719891991199319951997199920012003Application filedJuly 5, 1984Patent grantedOct 7, 1986Term endedOct 7, 2003

Sources & verification

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