Pulsating glue head for folding machines
CA 1097496 A · Owner: Carstedt, Howard B. · Inventors: Carstedt, Howard B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for automatically spot gluing printed sheets on a folding machine. The apparatus comprises an applicator head, an internally defined cylinder interconnected with a source of fluid pressure, and a reciprocally displaceable piston disposed within the cylinder for selectively engaging a sheet to be glued. The piston includes a glue output orifice adapted to contact a printed sheet to be folded and glued in a folded condition. The orifice is in fluid flow communication with a glue input source. In a single action embodiment the apparatus includes a return spring for resetting the piston after each spot gluing operation, and in an alternative double action embodiment fluid pressure is …
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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 March 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 1998.
- 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.