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
Bio-stimulant for improved plant growth and development
Load balancing in shortest-path-bridging networks
Fringe field switching mode liquid crystal display panel
Zoom lens
Semiconductor device, semiconductor device design method, semiconductor design apparatus, and program
Method and apparatus for detection of LVDT core fallout condition
Method of controlling semiconductor device, signal processing method, semiconductor device, and electronic apparatus
  Randomly Featured Patents
Biometric authenticaton system and method with vulnerability verification
Method for in-situ removal of side walls in MOM capacitor formation
Diplexer synthesis using composite right/left-handed phase-advance/delay lines
Potential data selection circuit
Furoxan compounds, compositions and methods of use
Display device with clock
Classification-based method and apparatus for string selectivity estimation
Press with columns compensated for deformation during tightening
Automatic-tuning circuit for integrated continuous-time MOSFET-C filters
Protective electrode sleeve