Single-handle mixing valve
First Claim
Patent Images
1. A single-handle mixing valve comprising:
- a valve casing having a central bore, a pair of first fluid inlets and a first fluid outlet;
a cylindrical sleeve within said bore and including a pair of radially disposed inlet bores in communication with said first fluid inlets and a fluid outlet bore in communication with said first fluid outlet;
a hollow piston disposed within said sleeve, said piston being rotatable to control the fluid mixing ratio and axially shiftable to control the fluid flow volume;
a pair of sealing elements, each sealing element being carried in a corresponding one of said inlet bores;
each of said sealing elements comprising;
a rim-type molded body having a central aperture and arcuately formed to correspond to the outer surface curvature of said piston, and a sealing cord ring buttoned on said molded body, said sealing cord ring providing a seal between said sleeve and said casing and between said sleeve and said piston;
said piston having a plurality of longitudinal slots radially arranged along the axial direction of said piston, each of said slots having a length and a width of smaller dimension than the cross-sectional diameter of said sealing cord ring; and
noise silencing means disposed within said piston.
2 Assignments
0 Petitions
Accused Products
Abstract
A single-handle mixing faucet of the type having a rotatable axially movable hollow piston for the selection of the mixing ratio and flow volume includes improved seals for sealing between the walls of the valve casing and a cylindrical sleeve inserted into the valve casing. The seals are of two piece construction and include a rim-type molded body bent to follow the configuration of the sleeve and a sealing member which is carried by the molded body. Inlet apertures on the sleeve are longitudinal slots of specific configuration. Noise silencing is enhanced by use of perforated disks or a porous cylinder.
10 Citations
9 Claims
-
1. A single-handle mixing valve comprising:
-
a valve casing having a central bore, a pair of first fluid inlets and a first fluid outlet; a cylindrical sleeve within said bore and including a pair of radially disposed inlet bores in communication with said first fluid inlets and a fluid outlet bore in communication with said first fluid outlet; a hollow piston disposed within said sleeve, said piston being rotatable to control the fluid mixing ratio and axially shiftable to control the fluid flow volume; a pair of sealing elements, each sealing element being carried in a corresponding one of said inlet bores; each of said sealing elements comprising; a rim-type molded body having a central aperture and arcuately formed to correspond to the outer surface curvature of said piston, and a sealing cord ring buttoned on said molded body, said sealing cord ring providing a seal between said sleeve and said casing and between said sleeve and said piston; said piston having a plurality of longitudinal slots radially arranged along the axial direction of said piston, each of said slots having a length and a width of smaller dimension than the cross-sectional diameter of said sealing cord ring; and noise silencing means disposed within said piston. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
Specification