Gas and liquid contact apparatus – Fluid distribution – Valved
Reexamination Certificate
2006-02-24
2008-09-23
Chiesa, Richard L (Department: 1797)
Gas and liquid contact apparatus
Fluid distribution
Valved
C137S015250, C261S064100, C261S065000
Reexamination Certificate
active
07427057
ABSTRACT:
A combustion engine carburetor has a control valve assembly that generally controls flow through a fuel-and-air mixing passage extending through a body of the carburetor. The control valve assembly has at least one valve preferably of a butterfly-type having a shaft that extends transversely across the fuel-and-air mixing passage and journaled for rotation in the body about a rotation axis. The shaft has opposite trailing and leading end portions that project from generally opposing sides of the carburetor body. Axial movement of the shaft with respect to the body is limited by an axial retention feature that preferably has a radially enlarged end cap formed unitarily to the trailing end portion and a coupler snap fitted to the leading end portion. Preferably, the coupler is formed unitarily at least in part to a control lever of the valve having a rotation restriction feature that prevents rotation of the control lever with respect to the shaft and is orientated in such a way to the leading end portion so that the control lever and at least a part of the coupler is removable from the shaft.
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Kampman Erin E.
Pattullo George M.
Chiesa Richard L
Walbro Engine Management , L.L.C.
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