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:
Mar. 05, 1991
Filed:
Jan. 22, 1990
Manfred Pawelzik, Soest, DE;
Horst Titze, Hagen, DE;
Friedrich Grohe Armaturenfabrik GmbH & Co., Hemer, DE;
Abstract
A mixing valve comprises a housing centered on a housing axis, a base plate formed with an outlet port bisected by a symmetry plane including the housing axis and a pair of arcuate inlet ports offset from the outlet port and symmetrically flanking the plane. The ports open on the base plate at a planar front surface perpendicular to the axis and plane. A control plate has a back surface lying on the base-plate front surface and is formed with a cavity opening at the back surface at a rim. A lever is mounted on the housing and control plate for moving the control plate parallel to the symmetry plane from a closed position with the cavity over the outlet but not over either of the inlets to an open position with the cavity over the outlet port and at least one of the inlet ports and transverse to the symmetry plane to vary the coverage of the inlet ports while still being over the outlet port. The cavity opens at the back surface at a rim having a generally elliptical shape and having a major axis parallel in the closed position to the symmetry plane. In addition the inlet ports have on the front surface substantially circularly arcuate inner edges having a common center of curvature.