Resources Contact Us Home
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
Moulded tie strips
Compositions for inhibiting NADPH oxidase activity
Human and mouse targeting peptides identified by phage display
Engineered enzymes with methionine-gamma-lyase enzymes and pharmacological preparations thereof
Asynchronous distributed de-duplication for replicated content addressable storage clusters
Hybrid CMOS nanowire mesh device and PDSOI device
Electronic device and recording medium
  Randomly Featured Patents
Adjustable pipe coupling assembly
Methods of reducing perceived image crosstalk in a multiview display
Tape loading apparatus
Luggage tag
Dual purpose, weather resistant data terminal keyboard assembly including audio porting
Apparatus for treating cardiac arrhythmias
Method of neutralizing protein allergens in natural rubber latex product formed thereby
Wideband phase locked loop transmitter system
Shelter structure
Process for enhancing plant growth