Chip removal apparatus for rotary cutters of web printing presses
CA 2065768 A1 · Owner: Stambaugh, Blaine C. · Inventors: Stambaugh, Blaine C.; Campbell, Gaines P. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Chip Removal Apparatus For Rotary Cutters of Web Printing Presses, Abstract, Apparatus for removing and disposing of scrap paper chips (34) impaled on a roller (14) rotating away from the cutting region of a rotary cutter (10) has a pneumatic baffle plate (36) located a distance of 3/8 to 1 1/2 inches away from the roller defining, a narrow flow channel (42) through which an air stream is sucked by a centrifugal fan (64). The baffle is spaced apart from the roller a distance such as to impart a high velocity to the air stream due to aerodynamic effects, causing chips to be forcibly removed from the roller when the chips reach an area above the flow channel. The baffle along with a chute …
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 10, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 10, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 10, 2014.
- 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.