Apparatus for sealing packages
CA 1264157 C · Owner: Ykk Corporation · Inventors: Yokoe, Kazuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A package-sealing apparatus includes a heat-sealing unit having a pair of opposed sealing heads relatively movable toward each other to join a region of overlap of a web of thermoplastic sheet material, and a cutting unit associated with one of the sealing heads for severing the web across the overlapping resion. Each of the sealing heads has a pair of spaced sealing lands and a channel defined between the sealing lands, the sealing lands being engageable with the web to fuse the overlapping region along two spaced portions extending respectively in registry with the sealing lands. The cutting unit includes a knife blade reciprocably movable through the channel of said one sealing head into …
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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 2, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 2, 2007.
- 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.