Method and apparatus for opening lid of box

Details Method and apparatus for opening lid of box Method and apparatus for opening lid of box

1992-12-21

1994-11-08

Culver, Horace M.

Package making

Methods

Opening only

533814, 414411, B65B 4340, B65B 6900

Patent

active

053615620

ABSTRACT:
The lid of a box is pushed up from the main body of the box by injecting gas by use of one or more injection nozzles into a gap formed between the lid and main body of the box and then, with part of a top plate of the lid in contact with a lid rotating stopper, gas is further injected into the gap, or the lid is pushed up by injecting gas into the gap by use of one or more lower position injection nozzles and then gas is injected into the gap by use of one or more higher position injection nozzles in one or more stages, before the lid is opened from the main body. Thereby, it is possible to prevent the lids from being opened in a three-dimensional inclined state (in a one-side opened state) as well as to prevent the lid and main body of a box from being pushed upwardly simultaneously.

REFERENCES:
patent: 2918773 (1959-12-01), Krupp et al.
patent: 2940229 (1960-06-01), Baker
patent: 2995883 (1961-08-01), Aubry et al.
patent: 3247646 (1966-04-01), McIntyre
patent: 3513621 (1967-08-01), Chamberlin
patent: 3777455 (1973-12-01), Allen
patent: 3845605 (1974-11-01), Hartness
patent: 4466767 (1984-08-01), Meschi
patent: 4692083 (1987-09-01), LeRoux et al.
patent: 5059082 (1991-10-01), Tanttu et al.

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