Diaphragm carburetor for four cycle engines
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United States of America Patent
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Jan 25, 2000
Grant Date -
N/A
app pub date -
May 20, 1998
filing date -
May 20, 1998
priority date (Note) -
Expired
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Abstract
A diaphragm type carburetor is disclosed wherein a cantilever portion is used to augment the resilience of a first diaphragm and return it to an undeformed position during the neutral signal produced by a 4-cycle engine. The cantilever portion cooperates with the intermittent vacuum signal from the crankcase piped to one side of the first diaphragm so as to oscillate the diaphragm and draw fuel from the fuel tank of the engine into the carburetor. The device is also suited for use with 2-cycle engines which produce both vacuum and pressure pulses wherein the cantilever portion is used to augment either pulse to improve the performance of the fuel diaphragm.
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