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
Rechargeable battery including a channel member
Emergency whistle, flashlight, and compass
System and method for generating profile morphing using cephalometric tracing data
Method and system for presenting live video from video capture devices on a computer monitor
Method for playing digital media files with a digital media player using a plurality of playlists
Liquid crystal display and method of driving the same
Substituted thiophene pentamers
  Randomly Featured Patents
Catalytic converter and manufacturing method thereof
Multiple channel biomedical digital telemetry transmitter
Discrete or continuous tissue capture device and method for making
Anti-inflammatory and immunomodulatory amino acid derivatives, their preparation and use
Polysilicon structure and process for improving CMOS device performance
Method and system for fabricating and testing assemblies containing wire bonded semiconductor dice
Corner modules and articulate connectors for balustrade handrail constructions and constructions incorporating the same, and methods for partial factory pre-fabrication and for on-site fabrica
Retractable type lens barrel
Outdoor display apparatus
Electrically alterable amplifier configurations