Device for the air control of feeder blow air and feeder suction air in sheet feeders of printing presses
CA 2024293 C · Owner: Heidelberger Druckmaschinen Aktiengesellschaft · Inventors: GROßMANN, DIETER
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The device for the air control of feeder blow air and feeder suction air in sheet feeders of printing presses comprises two rotary valves, consisting of valve housing (8, 9) and valve body (7). The control apparatus (5) for feeder blow air and the control apparatus (6) for feeder suction air are operable separately by remote control. This allows remote control from the operator console (3) and from the control desk (4) at the sheet delivery (1) as well as the controlled feeding of sheets into the printing press.
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 August 30, 1990 and granted September 6, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 30, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 30, 2012.
- 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.