Apparatus for stretching the mouth of a bag

Details Apparatus for stretching the mouth of a bag Apparatus for stretching the mouth of a bag

1998-03-23

1999-07-27

Garbe, Stephen P.

Flexible bags

With means to maintain the bag mouth in an open configuration

Hinged mouth stiffeners

150120, 248 99, B65D 3302

Patent

active

059278560

ABSTRACT:
A stretching apparatus includes two U-shaped frames and two pivot couplers which pivotally interconnect joint ends of the U-shaped frames. At least one coupler includes a U-shaped pivot seat and a slider. The pivot seat has two opposite upright walls and a bottom bight portion. Two adjacent joint ends of the U-shaped frames are pivotally connected to the pivot seat adjacent to the bottom bight portion to prevent downward pivotal movement of the U-shaped frames toward one another. The opposite upright walls have two pairs of positioning holes above the bottom bight portion. One of the walls has a perpendicularly extending extension plate. The slider has two insert portions and is mounted on the extension plate to move between a first position, wherein the insert portions extend through the aligned positioning holes so as to press the adjacent joint ends against upward turning movement of the U-shaped frames, and a second position, wherein the insert portions move away from the respective one of the pairs of the aligned positioning holes.

REFERENCES:
patent: 466814 (1892-01-01), Weltmer
patent: 524908 (1894-08-01), Nathan
patent: 533743 (1895-02-01), Prahar
patent: 4368767 (1983-01-01), Friedman
patent: 4537377 (1985-08-01), Shewchuk
patent: 5451107 (1995-09-01), Ricker

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