The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 09, 1983
Filed:
Nov. 24, 1981
Dennis Marshall, Lexington, KY (US);
Other;
Abstract
A mixing valve which provides water of a constant temperature when connected to sources of hot and cold water. The valve comprises a cylindrical housing having first and second axially aligned spaced inlet connectors, a rotatable pressure selection element positioned within the housing, an axially translatable pressure equalizing element positioned within the pressure selection element and a rotatable temperature selection element positioned within the pressure equalizing element. The pressure selection element has first and second ports substantially aligned with the inlet connectors to the housing. The pressure equalizing element has inner and outer concentric radially spaced coaxial cylinders and a centrally located spacer interposed between the cylinders. The inner cylinder of the pressure equalizing element is provided with first and second elongated ports extending from the spacer to the ends of the inner cylinder and which are angularly displaced from the first and second ports in the pressure selector. The outer cylinder is provided with first and second ports for controlling the flow of water from the first and second ports of the pressure selection element. The temperature selection element has first and second ports angularly displaced with respect to each other and to the first and second ports in the inner cylinder of the pressure equalizing element. Rotation of the pressure selection element adjusts the volume of water discharged per unit time from the valve and rotation of the temperature selection element adjusts the ratio of hot to cold water discharged.