Bag opening device for automatically opening plastic bags in sup

Details Bag opening device for automatically opening plastic bags in sup Bag opening device for automatically opening plastic bags in sup

1991-07-26

1992-09-01

Coan, James F.

Package making

Means to open or erect receptacle

Means to open bag

53390, 53570, B65B 4328

Patent

active

051428407

ABSTRACT:
Bag opening device for supermarket check-out counters incorporating bag dispensing machines, comprising a pair of pliers mounted on a pair of guides capable of a reciprocating horizontal motion. The pliers grasp and pull apart the two opposite sides of a bag fed by feeding belts. Each pliers (1, 2) consists of a pair of jaws (9, 9' and 11, 11') meshing with each other by means of a pair of toothed wheels (13, 13' and 14, 14') and pushed towards each other by a compression spring (16, 17) placed between two of their ends. One of the ends of each pliers is provided with a roller (18, 19) which, by interacting with a suitable opening device, counteracts the force of the compression springs (16, 17) thereby opening the jaws (9, 9' and 11, 11') of each pliers (1, 2).

REFERENCES:
patent: 3740922 (1973-06-01), Liou
patent: 3859062 (1975-01-01), Okubo et al.
patent: 4085822 (1978-04-01), Osborn
patent: 4245944 (1981-01-01), Van Ginkel et al.
patent: 4835948 (1989-06-01), Humphrey
patent: 4874354 (1989-10-01), Johnson et al.

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