Manufacturing valve plate units for sliding gate valves
CA 1237881 A · Owner: Stopinc Aktiengesellschaft · Inventors: Kagi, Otto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of manufacturing a valve plate unit for a sliding gate valve includes providing a refractory valve plate with at least one recess in its periphery placing a metallic, hoop around the periphery of the plate and pressing a portion of the hoop into the or each recess and thereby permanently plastically deforming it. The or each said portion of the hoop is pressed into the respective recess by such a distance that the distance between it and an opposed portion of the hoop which, is preferably itself deformed into a recess has a predetermined, value. PA 3407 KXR/Gi/Le
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 14, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 14, 2005.
- 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.