Liquid-filled thermostatic system for controlling heating valves
CA 2093796 C · Owner: Buchta, Alfred · Inventors: Rothengass, Wolfgang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liquid-filled thermostatic system for controlling heating valves with an actuating device with an overpressure safety device used for set temperature adjustment and acting as a sensor and a working device which can be fitted on the valve housing and acting directly on the heating valve, in which the actuating device is connected to the working device via a capillary tube in which, the actuating device has an adjusting button a housing consisting, of a preferably domed cap and a casing bottom a corrugated pipe, arranged coaxially inside the housing and a preferably circular securing device around the casing to secure said casing to a wall or the like, in which the housing and the …
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 July 18, 1991 and granted January 21, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 18, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 18, 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.