Flue gas shut-off valve
CA 1291978 C · Owner: Exxon Research And Engineering Company · Inventors: Lietz, Arthur Albert; Shaw, Donald Francis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The slide valve of the present invention is adapted for use in horizontal piping runs. It comprises a valve body, an orifice plate a sliding, plate and guide means for the sliding plate. The orifice plate is located in the valve body and inclined at an angle, .alpha. selected to achieve a predetermined seating force when the sliding plate also inclined, is in the valve body in the closed position and bearing on the orifice plate. The guide means are provided for guiding the slide plate when it is moved in and out of the valve body under conditions of use.
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 November 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 12, 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.