Pressure medium actuated valve
CA 1215289 A · Owner: Sulzer Brothers Limited · Inventors: Grotloh, Karlheinz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The pressure medium actuated valve (1) has a pressure medium inlet port (11), an outlet port (12) and a cylinder in which a piston (24) connected to a closure member (13) can slide. The piston subdivides the cylinder (2) into a first piston space (21) and a second piston space (22). Two relief conduits (44,45) each containing a control, valve (441,451) are connected to the piston spaces (21,22) and extend to a pressure medium sink. A first connecting conduit (41) containing a control valve (411) extends from the inlet port (11) to the first piston space (21) and, a second connecting conduit (42) containing a control valve (421) extends from the inlet port (11) to the second piston space …
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 December 16, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 16, 2003.
- 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.