Pneumatic control system
CA 2203580 A1 · Owner: Hygrama Ag · Inventors: Frisch, Herbert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a pneumatic control system having several consuming elements (1), the working chambers (7, 8) of which are connected via pressure lines (2) with electrically operated changeover elements (6) which, in turn are connected via, pressure supply lines (11) with a common pressure source and via electric signal lines (10) with a common control unit (19), is provided to facilitate, in particular the assembly, or making of the necessary connections that the changeover, element (6) together with the pressure lines (2) to the working chambers (7, 8) are each arranged directly on the consuming devices (1) while forming a consuming unit (9) and that the electric signal lines (10) and the pressure …
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
- Filed April 24, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 24, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 24, 2019.
- 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.