Duct forming machine

Details Duct forming machine Duct forming machine

1992-04-15

1993-02-16

Terrell, William E.

Manufacturing container or tube from paper; or other manufacturi

Control means energized in response to activator stimulated...

Responsive to work material, the product or means engaging...

493 19, 493117, 493295, 493302, 493382, B31B 372, B31B 360, B31F 100, B65H 4522

Patent

active

051867044

ABSTRACT:
A duct closure machine for closing duct board into duct with tape which can close duct having four or more sides. Duct board is moved through the machine by a single source of power driving upper and lower rollers with the lower set of rollers movable to accomodate duct of different size. The tape applicator is shiftable laterally to apply tape to duct of different number of sides such as ten sides. The tape applicator is controlled with a simple power circuit in which power to cut off the tape is only applied for a brief time as the completed duct passes through the machine.

REFERENCES:
patent: 4070954 (1978-01-01), Cailey
patent: 4227955 (1980-10-01), Woods et al.
patent: 4528053 (1985-07-01), Auer
patent: 4633642 (1987-01-01), Lissoni
patent: 4658563 (1987-04-01), Lissoni
patent: 4875895 (1989-10-01), Donnay et al.
patent: 5025608 (1991-06-01), Marchetti

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