Anchor nut fastener device

Details Anchor nut fastener device Anchor nut fastener device

1983-08-08

1985-12-10

Smith, Gary L.

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

Having separate expander means

Frangible member

411 55, 411181, F16B 1910

Patent

active

045576491

ABSTRACT:
An anchor nut fastener device is of the type comprising a tubular body portion (11) and a nut portion (12) which tapers externally, whereby when the body portion is inserted in a suitable hole in a workpiece and the nut portion (12) is forced into the body portion (11), the taper on the nut portion (12) both radially expands the body portion into engagement with the wall of the workpiece hole and also engages the nut portion in the body portion, thereby to provide an anchor nut in the workpiece. The external taper on the nut portion (12) comprises a first, relatively long, part (24) of a relatively shallow taper and a second, relatively short, part (26) of relatively steep taper further away from the body portion than is the first part and extending radially outwardly of the first part. The end of the body portion (11) is enlarged to provide a head (10), and a countersink (14) into which the leading end of the nut can be enlarged.

REFERENCES:
patent: 1850768 (1932-03-01), Peirce
patent: 2796907 (1957-06-01), Dumas
patent: 3465637 (1969-09-01), Cushman et al.
patent: 3493254 (1970-02-01), Summerlin et al.
patent: 3683740 (1972-08-01), Martin

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