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:
Jun. 24, 1986
Filed:
Apr. 18, 1985
Alfons Knapp, Biberach an der Riss, DE;
Gevipi A.G., Vaduz, LI;
Abstract
A mixer valve in which a fixed hard material plaque has passage openings which communicate with two feeding pipes, a plastic material control slide is connected to a valve operator, and a movable hard material plaque, rigidly connected to the control slide, cooperates through a portion of its peripheral edge with the passage openings of the fixed plaque, in order to control the delivered liquid flow rate and the mixing ratio of the liquids fed to the valve; the plastic material slide has a series of blades disposed in a comb-like fashion, which extend up to the vicinity of that edge portion of the movable plaque, and at least a part of which corresponds, on the side which is axially opposite the fixed plaque, to a window communicating with the space situated behind the control slide. Preferably, the control slide is guided for a diametrical displacement in a rotary guide ring, and this guide ring in its turn is provided with a series of blades disposed in register with the blades of the control slide. Thanks to these features the noise produced by the mixer valve is highly reduced.