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
Silicone hydrogel, lens for eye and contact lens
Point-of-sale server and method
Liposomes with improved drug retention for treatment of cancer
Sperm factor sequences
Error scanning in flash memory
Reception circuit and signal reception method
Method for making an abrasion-resistant steel plate and plate obtained
  Randomly Featured Patents
Locking differential
Spoked wheel spinner with non-rotating cap
Pattern classification method
Frozen food and process for producing the same
Virtual machine manager system and methods
Tissue processing apparatus and method
Method and system for automatically displaying an image and a product in a page based on contextual interaction and metadata
Self-lubricating pneumatic insert for a pneumatic tire
Apparatus for looping the outermost convolutions of spiral binders for note books or the like
Protein forming complex with c-Fos protein, nucleic acid encoding the same and method of using the same