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
Mobile browser context switching
Image reproduction system and image reproduction processing program
Nonvolatile memory device
Reliable event broadcaster with multiplexing and bandwidth control functions
Personal IP toll-free number
Cavernous nerve stimulation via unidirectional propagation of action potentials
Signal transfer apparatus
  Randomly Featured Patents
Desynchronizer and use of same
Circuit and method of activating and de-activating a switching regulator at any point in a regulation cycle
Patterned structures with optically variable effects
DDR-II driver impedance adjustment control algorithm and interface circuits
Gerbera plant named `Florush`
Sliding visor
Method and system for cross frame transmit combining of transmit signals
Grooved n-type TiO.sub.2 semiconductor anode for a water photolysis apparatus
Projection optical system and exposure apparatus
Compensation of magnification mismatch in single pass color printers