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Expired Canadian patentCanada

Automatic feed circuit for dunnage converter

CA 1255376 A · Owner: Ranpak Corp. · Inventors: Ottaviano, Gary W.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A dunnage converter mechanism for producing relatively low density pad-like cushioning dunnage product from flexible sheet-like stock material in roll form. The converter includes means for pulling the sheet-like stock material from a supply roll thereof into the mechanism while causing inward rolling of the lateral edges of the sheet-like stock material resulting in a pad-like cushioning product emitted from the machine, with the product having lateral relatively resilient pillow-like portions and a central connecting section holding the pillow-like portions together in generally side-by-side attached relation. A settable control means is provided in an associated control circuit coupled …

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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 June 6, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 6, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 8, 1986
GrantedJune 6, 1989
Term endedJune 6, 2006
Patent numberCA 1255376 A
Classification (IPC)B31B70/00 +2 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedSep 8, 1986Patent grantedJune 6, 1989Term endedJune 6, 2006

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.