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
Systems and methods for velocity profile based approach to point control
Apoptosis inductor extracted from potato, potato foodstuff containing the inductor, and processed product thereof
Bad column management with bit information in non-volatile memory systems
Emergency whistle, flashlight, and compass
Controller for soldering iron
Apparatus and method of managing radio bearer in wireless communication system
Biomarker for Barrett's Oesophagus
  Randomly Featured Patents
Fastening peg and method of making same
Depth projector system with integrated VCSEL array
Misfire discriminating method for an engine
Method of manufacturing a piezoelectric element
Disposable cup with fold-down lid
Double locking connector
Splinting device for auricular hematoma
Erythropoietin (EPO) peptides
High density computer equipment storage system
DC offset cancel circuit, semiconductor device, and receiving device