Guidance device

Details Guidance device Guidance device

1989-05-30

1990-12-25

Smith, Gary L.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Impact driven fastener, e.g., nail, spike, tack, etc.

Having means to facilitate explosive driving

411394, 411397, F16B 1500

Patent

active

049798588

ABSTRACT:
Improved guidance devices, particularly guidance flutes and guidance tips, as used to guide pointed fasteners, particularly drive pins of different lengths and threaded studs, as such fasteners are driven through muzzle bushings of powder-actuated tolls, are disclosed. Such a guidance flute, as extruded from an elastomeric material, has four pairs of non-radial ribs protruding outwardly from a tubular body. Each pair consists of one relatively short rib and one relatively long rib in parallel relation with respect to each other, upon opposite sides of a diametrical plane, when the ribs are unstressed. Such a guidance tip, as molded from an elastomeric material, has a cap portion and a flared skirt, which has plural slots extending toward the cap portion and dividing the skirt portion into plural flanged or flared portions. Such guidance devices, when assembled with such fasteners, can be snugly fitted within a muzzle bushing having a bore diameter within a range of bore diameters.

REFERENCES:
patent: 2676508 (1954-04-01), Erickson
patent: 3978759 (1976-09-01), Bakoledis
patent: 4286496 (1981-09-01), Harris
patent: 4669169 (1987-06-01), Hogg

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