Non-repeat doctor blade drive
CA 1183041 A · Owner: Motter Printing Press Co. · Inventors: Yessler, Ralph A. Ii
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A drive for the doctor blade of a gravure type printing press oscillates the doctor blade in a non-repeating motion. A doctor slide is coupled to the doctor blade and, oscillated on the frame by a first piston-cylinder unit. pneumatic valve slide is driven back and forth on the frame by a second piston cylinder unit, between a first pair of end stops mounted on the doctor slide and between a second pair of end stops mounted on the frame. Upon engagement of the end stops on the doctor slide, the valve slide provides a pressure signal to reverse the direction of motion of the doctor slide. Upon engagement of the end stops on the frame the valve slide provides a pressure signal to reverse its …
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
- Granted February 26, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 26, 2002.
- 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.