Dry channel liquid seal
CA 1056868 A · Owner: John Zink Company · Inventors: Reed, Robert D.; Zink, John S.; Schwartz, Robert E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liquid seal assembly for a gas flow system having a housing containing a water seal a vertically, directed cylindrical pipe for gas entry dipping into the water and a second smaller cylindrical pipe coaxial with the first, also dipping below the water level. Communication between the annulus between the first and second cylindrical pipes to the inside of the second pipe, is by means of one or a plurality of nested annular cups. These are below the normal static water level and are thus filled with water whenever the pressure of incoming gas is below a selected value. As the pressure of the incoming gas increases, the water level is depressed until gas can flow through the U-shaped passage …
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 June 19, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 19, 1996.
- 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.