Resources Contact Us Home Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE     Float Valve Image Number 4 for United States Patent #7472717. A first valve port is set to have a seal diameter smaller than that of a second valve port. Due to a pressure reception area of a first valve body port being small, the attachment force of the first valve body portion is reduced with respect to a valve seat. It thus becomes possible to open the first valve port as the attachment of the first valve body portion is released with respect to the valve seat without increasing the weight of the float. After the first valve port is opened, the pressure difference is reduced between inside of a fuel tank and a connecting pipe on the side of a canister, and the attachment force acting on a second valve body portion is also reduced. In this manner, the second valve body portion is opened with certainty. As a result, it becomes possible to go through the operation of opening the second valve port that is larger in diameter than the first valve port without increasing the weight of a sub float.       Recently Added Patents Clog resistant wing union pressure sensor Method of providing multicast broadcast service Polyarylacetylenes containing siloxane, silane, and carborane moieties Pasting edge heater Mobile device case Monostatic multibeam radar sensor device for a motor vehicle Method and apparatus for the photo-acoustic identification and quantification of analyte species in a gaseous or liquid medium   Randomly Featured Patents System for providing biological materials Door lock Coated front copy paper Bra cups having wave-shaped edge Method of controlling an operation of an electronically controlled camera Clock controlling method and circuit with a multi-phase multiplication clock generating circuit Taking lens apparatus Polymer, positive resist composition, and patterning process using the same Quick release glasses lens Optical and focusing arrangement for microfiche reader © 2006-2008 PatentGenius. All Rights Reserved.