Needle for use in the rodless dispensing of plastic fasteners

Details Needle for use in the rodless dispensing of plastic fasteners Needle for use in the rodless dispensing of plastic fasteners

1994-09-13

1996-12-31

Hail, III, Joseph J.

Elongated-member-driving apparatus

With means to shape work or cut product

Means to form opening in work for member

24 901, 112222, D05B 8500, D05B 9710, B25B 3100

Patent

active

055885756

ABSTRACT:
Needle for use in the rodless dispensing of plastic fasteners of the type comprises a flexible filament and a cross-bar disposed at one end of the flexible filament. In one embodiment, the needle comprises a solid elongated member terminating at its front end in a tip adapted to penetrate a desired article of commerce and a chamber adapted to receive a cross-bar of a plastic fastener. The chamber includes a front end, a rear end, an open top and an open bottom. The open top, which is spaced rearwardly a distance from the tip, is appropriately sized and shaped to permit the insertion and removal of a cross-bar into and from the chamber. The front end is downwardly angled towards the tip to releasably engage the top surface of the front end of the cross-bar, and the rear end has a pair of walls intersecting in a V-shape to releasably engage both the top surface and the bottom surface of the rear end of the cross-bar in such a way as to prevent the cross-bar from being pulled out of the chamber through the open top when low tension is applied to the flexible filament (i.e., prior to the complete insertion of the cross-bar through the article of commerce), but yet, so as to cause the cross-bar to be pulled out of the chamber through the open top when high tension is applied to the flexible filament (i.e., following the complete insertion of the cross-bar through the article of commerce).

REFERENCES:
patent: 3399432 (1968-09-01), Merser
patent: 3900925 (1975-08-01), La Torraca
patent: 4128067 (1978-12-01), Zocher
patent: 4316562 (1982-02-01), Davidson et al.
patent: 4361101 (1982-11-01), Marsh et al.
patent: 4539923 (1985-09-01), Long
patent: 5189972 (1993-03-01), Mitsui et al.

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