Fastener

Details Fastener Fastener

1975-05-28

1977-03-29

Moon, Charlie T.

29526, F16B 1900

Patent

active

040142450

ABSTRACT:
A fastener is disclosed for fastening together two sheets of metal having mutually aligned apertures defined by generally annular walls having a plurality of radially spaced notches therein. The fastener comprises a metallic tube having a plurality of outwardly projecting tabs positioned along chord extensions of the tube and sized to be seated in the aperture defining wall notches of the two sheets and bent off the chord extensions of the tube into locking engagement with the aperture defining wall notches to fasten the two sheets of metal to the fastener and thereby to each other.
A method is also disclosed for fastening together two sheets of metal. The method comprises the steps of cutting similarly sized and configured apertures into the two sheets of metal with the aperture defining wall of each sheet formed with a plurality of radially spaced notches. The two sheets of metal are stacked together with the aperture defining walls of each sheet in mutual register. A tubular fastener having a plurality of outwardly projecting tabs is inserted into the two sheets of metal apertures. The tubular fastener is then rotated relative to the two sheets of metal thereby forcing the plurality of tabs into locking engagement with the two sheets of metal.

REFERENCES:
patent: 2077120 (1937-04-01), Lombard
patent: 2105706 (1938-01-01), Stamy
patent: 2244976 (1941-06-01), Tinnerman

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