Electropneumatic control valve comprising a guide arrangement for a control piston
CA 2445674 A1 · Owner: Delfs, Joachim · Inventors: Deja, Siegmund; Schaffert, Eberhard; Strobel, Gunther
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an electropneumatic control valve for a pneumatic brake system of a vehicle. Said valve comprises a relay valve housing (1) in , which a control piston (5) that can be axially displaced for actuating a valve seat arrangement (8), which switches the compressed air flow between at least one external brake line connection (11) a pressure feed connection and a , bleed connection (13) is located. The control piston (5) is guided axially by means of a coaxial guide arrangement and is impinged by at least one electromagnetic pilot valve (6) to cause an axial displacement said valve , being lodged in a pilot valve housing (2) that is connected to the relay valve …
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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
- Filed April 26, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 26, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 26, 2024.
- 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.