Ignition and fire suppressor
CA 1289223 C · Owner: Graco Inc. · Inventors: Hemming, Dale R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ignition and fire suppressing system for an electrostatic sprayer of the type having a high voltage supply for creating an electrostatic charge and a nozzle in flow communication with a pressurized coating material source and a pressurized atomizing gas source. The system includes a high voltage arc-detecting circuit for sensing the presence of an ionizing arc or spark and for disabling the high voltage supply to the sprayer: a pressurized non-ignitable fire suppressing gas source in flow communication with the sprayer nozzle: and solenoid valves connected between the sprayer nozzle and the coating material, atomizing gas and fire suppressing gas sources which are actuated by an output …
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 September 17, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 17, 2008.
- 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.