Double disk gate valve
CA 1316900 C · Owner: Sulzer Ag · Inventors: Tiefenthaler, Edelbert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
P.6158 Stph, A b s t r a c t, The double disk gate valve has a moving gate (6) which comprises two closure disks (8, 9) and which has two servo pistons (25, 26) arrange diametrically opposite one another. Each servo piston is guided in a cylinder (27 28) and the, cylinder chambers (29, 31; 30 32) on either side of each piston, are interconnected by way of respective restrictor (37 38). The inner cylinder chambers (29, 30) communicate with the flow chamber of the valve and each of the outer cylinder chambers (32 32) is connected via a control valve (21 21') to a pressure, sink. Disposed between the two disks (8 9) is a space (16), which is sealed in respect of the gate (6)and which can be …
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 April 27, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 27, 2010.
- 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.