Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Automatic water supply shutoff valve










Image Number 5 for United States Patent #6357467.

An automatic water supply shutoff valve for use with a fire protection piping system has a body defining a cavity communicating among a supply inlet connected to a water supply, an ancillary outlet connected to ancillary piping, and a fire protection outlet connected to fire protection piping; and a piston within the cavity defining a piston passageway. The piston moves between a first position connecting the supply inlet and ancillary outlet and a second position connecting the supply inlet and fire protection outlet. The piston moves in response to biasing forces acting against the piston, including a first biasing force from the supply inlet, a second biasing force from the fire protection outlet, and a third biasing force. The first biasing force, urging the piston toward its second or fire protection position, is opposed by a combination of the second and third biasing forces, together urging the piston toward its first or ancillary position. The piston has an inlet communicating between the supply inlet and piston passageway, and a plurality of radial piston outlets, which, in first position, communicate between the piston passageway and ancillary outlet, and which, in second position, communicate between the piston passageway and fire protection outlet.








 
 
  Recently Added Patents
PVD coated tool
Photomask blank, photomask blank manufacturing method, and photomask manufacturing method
Method and apparatus for controlling cardiac resynchronization therapy using cardiac impedance
System and method for providing private demand-driven pricing
Magnetic resonance imaging apparatus
Eyeglasses
Management of memory array with magnetic random access memory (MRAM)
  Randomly Featured Patents
Apparatus for grasping a load from above or from the side, in particular for use in a manipulator
Inkjet printing apparatus and printing method
Camshaft adjuster with a superposition drive
Methods and devices for diagnosis of appendicitis
Energy saving lamp
Transmission coupling apparatus
Remote control
Packing container
Method of playing a lag and bump putting game
Carrier type conveying apparatus and conveying carrier connection system of the conveying apparatus