Hazardous fluid dispenser safety system
CA 2053808 A1 · Owner: Hunter, William D. · Inventors: Cross, Hugh E.; Hunter, William D.; Hunter, William D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for dispensing hazardous fluid particular suitable for gasoline service stations utilizing an electrical impact sensing switch mounted upon each dispenser wherein the contacts of the normally open switch close upon impact occurring at the dispenser and the switch controls a primary electrical circuit energizing the pumps providing pressurized fluid to the dispenser whereby impact forces de-energize the pumps minimizing the fire hazard. The impact sensing switch may also be employed to actuate alarms and alert personnel of the impact.
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
- Filed October 21, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 21, 2013.
- 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.