Gas and liquid contact apparatus – Fluid distribution – Valved
Reexamination Certificate
2006-10-03
2006-10-03
Chiesa, Richard L. (Department: 1724)
Gas and liquid contact apparatus
Fluid distribution
Valved
C261S044800, C261S060000, C261SDIG039
Reexamination Certificate
active
07114708
ABSTRACT:
A rotary throttle valve carburetor includes a body having a fuel and air mixing passage and a throttle valve movable between idle and wide open positions. A valve bore is increasingly aligned with the fuel and air mixing passage as the throttle valve is moved from idle toward its wide open position. A fuel metering needle is responsive to movement of the throttle valve so that the needle moves relative to the body in response to movement of the throttle valve. A fuel nozzle extends into the valve bore, is associated with the fuel metering needle, and has a fuel ejection passage with an effective flow area controlled by movement of the fuel metering needle relative to the fuel nozzle and includes a portion with a cross-sectional area that gradually increases in the direction of fuel metering needle movement corresponding to throttle valve movement toward its wide open position.
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Douyama Yoshiaki
Ohgane Shinichi
Takano Jun
Tobinai Teruhiko
Chiesa Richard L.
Reising Ethington Barnes Kisselle P.C.
Walbro Japan, Inc.
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