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
Plants and seeds of hybrid corn variety CH817100
Label printer
Predictive time entry for workforce management systems
Defect detection system and method
Composite materials comprising aggregate and an elastomeric composition
System, method, and computer program product for identifying unwanted data communicated via a session initiation protocol
Translation system adapted for query translation via a reranking framework
  Randomly Featured Patents
Microwave oven
Multi-area clutch assembly
Optical circulator
Navigation system with predicted positioning condition mechanism and method of operation thereof
Refrigeration system with ejector and working fluid storage
Marine oil leak recovery and marine petroleum mining method
Display apparatus with memory characteristic for storing system data
Optical module
Quick connecting vertical connector
Compact zoom lens