Gas valve assembly
CA 1138299 A · Owner: Honeywell B.V. · Inventors: Van Der Zee, Jan H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A gas valve assembly has a main valve connected between the inlet and outlet and controlled by a diaphragm actuator. A two position control valve connects the upper side of the diaphragm to either the inlet gas pressure or the outlet gas pressure to open or close the main valve. A pressure responsive valve means responding to the outlet pressures, controls the exhausting of gas from the upper side of the diaphragm to regulate the outlet pressure. An orifice is contained in the inlet passage to the control valve so that when the control valve is in an on position the flow of gas, to the upper side of the diaphragm is restricted by the orifice. To insure an initial fast opening of the main …
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 December 28, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 28, 1999.
- 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.