Arrangement for the electrical fuse protection of a clamping device in a sheet guide drum on printing machines
CA 2003824 C · Owner: Heidelberger Druckmaschinen Aktiengesellschaft · Inventors: Becker, Willi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The arrangement for the electrical fuse protection of the clamping device is shown on a sheet guide drum for printing machines for either first form or sheet work. The actuating element (27) of the clamping device is positioned in such a manner that it can be screwed axially, by means of a thread, between final positions, whereby screwing in a first section actuates a switching element (28) for an electrical switch (30) which is located in the power supply circuit for the drive of the printing machine. When it moves along a second section, the actuating element (27) acts on intermediate members which, press together at least one friction surface on the sheet guide drum, and one friction …
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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 November 24, 1989 and granted July 26, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 24, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 24, 2011.
- 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.