Diaphragm carburetor for four cycle engines

Details Diaphragm carburetor for four cycle engines Diaphragm carburetor for four cycle engines

1998-05-20

2000-01-25

Wolfe, Willis R.

Pumps

Motor driven

Fluid motor

417380, 123DIG5, F04B 4306, F04B 1705, F02M 3712

Patent

active

060171995

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.

REFERENCES:
patent: 4168288 (1979-09-01), Nau et al.
patent: 4846119 (1989-07-01), Geyer et al.
patent: 5259352 (1993-11-01), Gerhardy et al.
patent: 5365893 (1994-11-01), Wissmann et al.
patent: 5419686 (1995-05-01), Wissmann et al.

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