Special receptacle or package – For plate or sheet – Corner or edge protector
Patent
1998-06-30
1999-11-02
Sewell, Paul T.
Special receptacle or package
For plate or sheet
Corner or edge protector
206586, 2291201, 2483451, B65D 8548, B65D 8102
Patent
active
059753030
ABSTRACT:
A paperboard bumper is made from a die cut blank. Material is provided for two outer layers and two intermediate layers, the four layers overlying each other when the blank is collapsed flat. A first fold line extends longitudinally across the blank, and defines a folding and unfolding axis that corresponds to an outside corner of the bumper when erected. A tab is secured to each of the intermediate layers adjacent to a void in the blank. When folded flat the tabs are glued together and the void is collapsed. The intermediate layers are glued to the outer layers at opposing surfaces and form first and second walls when the blank is erected. Transverse fold lines extend on the walls, one positioned to either side of the tabs. A hollow chamber is formed between the transverse fold lines, extending along the walls, when the device is erected by unfolding it along the first fold line. The transverse fold lines are spaced from each other by a distance equal to the width of the tabs, so that the tabs are received in the hollow chamber to lock the erected device in a stable position.
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patent: 4529091 (1985-07-01), Martin
patent: 5782357 (1998-07-01), Johnson
Mohandesi J.
Sewell Paul T.
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