Manually operable fastener

Details Manually operable fastener Manually operable fastener

1986-05-14

1988-07-26

Dorner, Kenneth J.

Buckles, buttons, clasps, etc.

Bale and package ties, hose clamps

With tighteners

24131R, 24237, 24533, 24549, A44B 1302

Patent

active

047591030

ABSTRACT:
A manually operable quick action fastener, intended for both sporting and industrial use, consists essentially of a single length of wire which is formed into a closed triangular torsion spring having its torsion coils within the triangular shape and whose ends are formed, at the base of the triangle, into a closing hook and a locking arm. Other embodiments allow the closing hook to be strengthened by double winding or resin cladding, or both, and for higher load bearing models the wire winding of the basic triangular shape is modified to produce deflection limiting ends which allow the complete fastener to interlock and bear loads approaching the elastic limit of the material without slip of the parts.

REFERENCES:
patent: 409880 (1889-08-01), Stewart
patent: 440056 (1890-11-01), Pennington
patent: 449072 (1891-03-01), Gillis
patent: 472962 (1892-04-01), Collins
patent: 763921 (1903-07-01), Sibley
patent: 958532 (1910-05-01), Pollock
patent: 1846421 (1932-02-01), Guerrant
patent: 1878497 (1932-09-01), Lehr
patent: 2158937 (1939-05-01), Hilderbrant
patent: 2240235 (1941-04-01), Whan
patent: 2513759 (1950-07-01), Tarallo
patent: 2574755 (1951-11-01), Petrie
patent: 2810176 (1957-10-01), Gaafar
patent: 2820274 (1958-01-01), Ballentine
patent: 3263879 (1966-08-01), Sanderson
patent: 3747169 (1973-07-01), Anderson et al.

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