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Expired Canadian patentCanada

Carburetor for an internal combustion engine

CA 1316416 C · Owner: Vonderau, Werner · Inventors: Wolf, Jurgen; Holderle, Hans; Vonderau, Werner

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

Disturbances can occur in handheld portable tools driven by internal combustion engines because the idle-nozzle system and the main-nozzle system influence each other. The carburetor of the invention prevents this disturbing influence and provides a control of the engine which is proportional to speed. The carburetor includes a control member which closes off the main nozzle during idle operation and the idle nozzle during operation under load in dependence upon the position of the throttle flap.

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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 20, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 20, 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.
FiledMay 6, 1988
GrantedApril 20, 1993
Term endedApril 20, 2010
Patent numberCA 1316416 C
Classification (IPC)F02M17/04 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedMay 6, 1988Patent grantedApril 20, 1993Term endedApril 20, 2010

Sources & verification

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