Sealer apparatus for forming a cross seal in plastic film processing and particularly for bag making machines
CA 2323404 A1 · Owner: Amplas, Inc. · Inventors: Driscoll, Thomas D.; Claybaker, Peter J.; Blaser, Giles R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cross sealer for a bag making machine includes a frame with an upper seal bar unit and a lower seal bar unit in aligned opposed relation. One is movable seal, bar unit which includes a rigid support beam of a lightweight construction and a light, weight seal bar connected to the beam by a plurality of adjustable stud units for, adjusting the position of the seal bar. A rotating shaft spans the cross sealer and is, connected by a plurality of eccentric linkages to the beam between side plates of the, frame. The linkages support the beam and seal bar and transfers the sealing force onto, the beam and bar for moving the bar into sealing engagement across the width of the, web. The …
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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
- Filed October 17, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 17, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 17, 2022.
- 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.