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. 23, 2009
Filed:
Dec. 22, 2005
James LI, Brownsburg, IN (US);
Peter Berkman, Highland Park, IL (US);
James Li, Brownsburg, IN (US);
Peter Berkman, Highland Park, IL (US);
B & K Industries, Inc., Elk Grove Village, IL (US);
Abstract
A frost free faucet having a spigot assembly including a drain conduit, a sleeve assembly including an elongated pipe, and a valve assembly. The valve assembly includes a ½ turn valve, a check valve and optionally a pressure relief mechanism. The ½ turn valve includes a rotatable valve element configured with a water passageway and a stationary valve element with one or through holes. The rotatable valve element is circular-shaped and configured with a water passageway in a semicircular portion. The stationary element is a disc shaped configured with one or more through-holes in a semi-circular portion of the stationary valve element. Upon turning the rotatable valve element 180 degrees in a first direction, the water passageway and the one or more through-holes are aligned to an open position and upon turning the rotatable element 180 degrees in a second direction, the water passageway and the one or more through-holes are misaligned to a closed position. Each valve element of the ½ turn valve may be formed from a ceramic material, The check valve is located upstream of the ½ turn valve to prevent the backflow of water from the spigot to the supply line. An optional pressure relief mechanism allows water trapped downstream of the valve assembly to be discharged from the valve assembly.