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:
Nov. 13, 1990
Filed:
Mar. 14, 1990
Alfons Knapp, Biberach an der Riss, DE;
Gevipi A.G., Vaduz, LI;
Abstract
A hydraulic faucet intended to house a cartridge containing flux control members shaped as plane plates of hard material, and comprising a valve body and a removable cover, wherein some inlet passages for ambient air are provided for in register with the faucet cover, and a one-way valve with elastic lip is housed within the cover, between an outer region of the faucet, communicating through the inlet passages with the outside ambient, and an inner region of the faucet, communicating with the delivery outlet of the faucet. This one way valve with elastic lip is inserted in such sense that it remains sealingly closed when the pressure in the inner region of the faucet is not lower than the ambient air pressure which is present in the outer region of the faucet, and it automatically opens when the pressure in the inner region of the faucet decreases, even of a slight amount, under the ambient air pressure, so that no siphon back flow may arise.