Folded seal for plastic sheeting and forming apparatus
CA 1065911 A · Owner: Kontinen, Martti · Inventors: Kontinen, Martti
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A folded seal for plastic sheeting comprising a retain-, ing rod, a portion of the sheeting to be sealed wrapped around the retaining rod, and a slotted tube or channel having slot edges that are biased toward each other tending to form a closed tube or channel, disposed around the retaining rod and sheet portion and urging portions of the sheet adjacent the slot edges toward each other to form a seal. Apparatus for forming the seal comprises a guiding unit for holding the retaining rod a sealing unit, for holding the slotted tube spaced from and movable toward the guiding unit, plastic sheeting to be sealed disposed between the guiding and sealing units, and means for moving the sealing …
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 November 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 6, 1996.
- 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.