Valve for fire extinguishing system of gas distribution type
CA 1110520 A · Owner: Badger Fire Protection, Inc. · Inventors: Troup, George; Hansen, Arne
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A line or Directional valve of the type that is adapted for use in fire extinguishing systems of the gas dissemination type is provided, employing a move able piston adapted to be unseated from the valve seat upon delivery or fluid for opening thereof wherein, the forces of the valve piston against the valve seat are reduced and controlled by utilizing inlet fluid pressure that is operative against the piston in such a way as to reduce the forces from inlet fluid pressure on the piston to a desired net or resultant force. A vent is also provided for facilitating keeping the piston open after its initial opening.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted October 13, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 13, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.