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Expired Canadian patentCanada

Control means for secondary throttle

CA 1069784 A · Owner: Acf Industries, Incorporated · Inventors: Niebrzydoski, John L.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Abstract of the Disclosure A multiple stage carburetor has a linkage releasably connecting the secondary throttle for rotation with the primary throttle to open the second stage. A latch member for the linkage is movable between latched and unlatched positions and only when the latch member is in a latched position is the linkage connected for rotation of the secondary throttle. A diaphragm unit operated from a vacuum line to the intake manifold moves the latch member between latched and unlatched positions. A bimetallic element independent of the choke valve controls an air bleed to the vacuum line and is positioned to sense the normal operating temperature of the engine for movement of …

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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 January 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 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.
Filed—
GrantedJanuary 15, 1980
Term endedJanuary 15, 1997
Patent numberCA 1069784 A
Classification (IPC)F02M19/12 +1 more

Sources & verification

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