Vacuum assisted roller support for bottom feeding stacks of sheets
CA 1069948 A · Owner: Henc, Edward V. · Inventors: Henc, Edward V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides an apparatus for feeding blanks of sheet material to processing machinery comprising: roller members axially positioned to rotate in the direction of travel of said blanks as said blanks are moved to said processing machinery, said roller members serving as a feed bed for supporting a stack of blanks and extending successively in the direction of travel of the blanks; hold down means for said blanks including a vacuum source for providing negative pressure to be applied substantially throughout the space between said successive roller members against said lowermost blank of said stack; means to move the lowermost blank of said stack toward said processing …
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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
- Granted January 15, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 1997.
- 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.