Sheet guide drum for printing machines for first form or sheet work
CA 2007787 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 sheet guide drum for printing machines for either first form or sheet work is equipped with an improved clamp coupling and features an electrical fuse protection. A segment (2) on the circumference of the outer drum is adjustable against an inner shaft (1) in the direction of the circumference and is, lockable with this shaft by means of a clamping device. Friction members (7) secured in a pack on to the segment (2), and friction members (10) secured on the shaft (1) can be gripped between two counterbearings (11, 14) supported on the shaft (1) by, means of a moveable clamping lever (17) positioned transversely to the axial direction of the clamping force, whereby the clamping lever …
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 January 15, 1990 and granted July 5, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 15, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 15, 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.