Pressure-medium-actuated valve
CA 1231618 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 (11), a pressure medium outlet (12) and a cylinder (2), a piston (24) which is connected to a lid (13) being movable in the cylinder (2). The piston subdivides the cylinder (2) into a first piston chamber (21) and a second piston chamber (22). Two relief lines (44 45) each comprising, a control valve (441 451) are connected to the piston chambers (21, 22) and extend to a pressure medium sink. A first connecting line (41) comprising a control valve (411) extends from the inlet (11) to the first piston chamber (21) and a second connecting line (42) comprising a control valve (421) extends from the inlet (11) to the second …
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 January 19, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 19, 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.