Carburetor assembly for an internal combustion gas engine
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United States of America Patent
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May 17, 1994
Grant Date -
N/A
app pub date -
Jul 14, 1992
filing date -
Jul 14, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A carburetor assembly having a venturi element for fuel metering and a throttle valve for controlling the flow of an air and natural gas mixture to the combustion chamber of an internal combustion gas engine wherein a stepper motor is used to angularly position a throttle valve plate in the gas flow path to the carburetor, the throttle valve plate being carried on a throttle valve shaft that forms an extension of the armature of the stepper motor wherein provision is made for sealing the stepper motor at a location on the axis of rotation of the throttle valve element, the throttle valve shaft being mounted without the necessity for using throttle valve shaft bearings or a separate seal, thereby minimizing friction and any tendency for a misalignment to occur.
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