Package making – Methods – Closing package or filled receptacle
Patent
1998-11-06
2000-04-04
Sipos, John
Package making
Methods
Closing package or filled receptacle
53317, 533315, 53351, 53353, B65B 728
Patent
active
060446269
ABSTRACT:
A chuck (10) has a jaw bell (20), a lower bell portion (22) surrounding a plurality of jaws (40) and a hub (28) surrounding an upper portion of a jaw stem (60). A second portion of the jaw stem extends beyond a jaw bell hub (28) and is surrounded by a compressed jaw stem spring (76). The jaw stem spring is retained between a bell hub collar (34) and a jaw stem collar (70). The force of the jaw stem spring holds the jaw bell around the jaws, holding the jaws in a closed position. A stripper (80) has an upper end (82) carried within the jaw stem. A stripper spring (90) located above the upper end of the stripper is compressed and surrounded by the jaw stem. The lower end of the stripper has a disk (84) with a frusto-conical cross-section in slidable contact with the jaws. The jaw stem spring exerts more force downward on the jaw bell than the stripper spring exerts downward on the stripper to hold the jaw bell around the jaws and the jaws closed. Moving the jaw bell upward further compresses the jaw stem spring so that the force of the stripper spring moves the stripper downward, thereby moving the jaws downwardly and outwardly from the jaw bell to open the jaws.
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Harper Jason E.
McSherry Scott A.
Sobodosh Andrew J.
Jocke Ralph E.
Percio David R.
Pneumatic Scale Corporation
Sipos John
Wasil Daniel D.
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