Bottom outlet grommet mixing valve

Claim 2

In a single handle mixing valve, a housing having hot and cold water inlet ports and a discharge port, a sleeve in said housing, said sleeve having an open end forming a water discharge and hot and cold water inlets in the side thereof in communication with said housing inlet ports, a hollow stem within the sleeve, inlet and outlet means in said stem, rotation and reciprocation of said stem relative to said sleeve controlling the relative positions of said sleeve inlet ports and said stem inlet means to regulate the volume and temperature of water passing from said sleeve inlet ports, through said stem, to said sleeve open end, seal means between the stem and sleeve, and a cylindrical seal member positioned about the sleeve adjacent the sleeve inlets and having port seal portions extending through the sleeve inlets and in sealing contact with the stem, said cylindrical seal having a plurality of sections, there being a port seal portion in each section.

Claim 3

The structuRe of claim 1 further characterized by and including an outwardly-extending annular bead at opposite ends of the cylindrical seal.

Claim 4

The structure of claim 2 further characterized by and including an annular bead positioned about each of said port seal portions, with said annular beads being in sealing contact with the interior of the housing.

Claim 5

The structure of claim 3 further characterized in that said cylindrical seal member is formed of two substantially identical parts, with a port seal portion in each part.

Claim 6

The structure of claim 4 further characterized by and including a pair of spaced annular grooves in the exterior of said sleeve, and a pair of inwardly-directed projections adjacent the ends of said seal member cylindrical halves, with said projections fitting within said grooves to anchor said seal parts upon the exterior of said sleeve.

Claim 7

The structure of claim 1 further characterized in that said housing is generally cylindrical in form having a closed end, said discharge port being formed within said closed end.

Claim 8

The structure of claim 6 further characterized in that a portion of said sleeve and stem extend outside of said housing.

Claim 9

The structure of claim 1 further characterized by and including a shaft positioned within the hollow stem, a cup-shaped member enclosing a portion of the shaft and fixed in relation to the sleeve, a seal about said shaft and bearing against the interior of said cup-shaped portion, and a restricted passage in said shaft adjacent said seal.

Claim 10

The structure of claim 8 further characterized in that said cup-shaped member has a portion extending outside of said stem and in contact with the sleeve.

Claim 11

The structure of claim 1 further characterized by and including a shaft positioned within the hollow stem, a cup-shaped member enclosing a portion of said shaft and fixed in relation to the sleeve, a seal in said cup-shaped member and a restricted water passage between said seal, shaft and cup-shaped member.

Claim 12

In a single handle mixing valve, a housing having hot and cold water inlet ports and a discharge port, a sleeve in said housing, said sleeve having an open end forming a water discharge, and hot and cold water inlets in the side thereof in communication with said housing ports, a hollow stem within the sleeve, inlet and outlet means in said stem, rotation and reciprocation of said stem relative to said sleeve controlling the relative positions of said sleeve inlet ports and said stem inlet means to regulate the volume and temperature of water passing from said sleeve inlet ports, through said stem, to said sleeve open end, seal means between the stem and sleeve and between the sleeve and housing, a shaft positioned within the hollow stem, a cup-shaped member fixed relative to the sleeve, positioned within the stem and enclosing a portion of said shaft, said cup-shaped member and shaft defining a chamber, a seal within said chamber, and a restricted passage between said chamber and the interior of said stem, closure of the stem into the sleeve being restricted by the flow of water through said passage.

Claim 13

In a single handle mixing valve, a housing having hot and cold water inlet ports and a discharge port, a sleeve in said housing, said sleeve having an open end forming a water discharge, and hot and cold water inlets in the side thereof in communication with said housing ports, a hollow stem within the sleeve, inlet and outlet means in said stem, rotation and reciprocation of said stem relative to said sleeve controlling the relative positions of said sleeve inlet ports and said stem inlet means to regulate the volume and temperature of water passing from said sleeve inlet ports, through said stem, to said sleeve open end, seal means between the stem and sleeve and between the sleeve and housing, a shaft positioned within the hollow stem, a cup-shaped member fixed relative to the sleeve, positioned within the stem and enclosing a portion of said shaft, said cup-shaped member and shaft defining a chamber, a seal within said chamber, and a restricted passage between said chamber and the interior of said stem, closure of the stem into the sleeve being restricted by the flow of water through said passage.

Claim 14

The structure of claim 11 further characterized in that said seal extends about said shaft.

Claim 15

The structure of claim 11 further characterized in that said seal is positioned in the bottom of said cup-shaped member.