Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element with nut – washer – securing means or cap – Lap bolt or fastener
Patent
1984-07-12
1986-08-05
Holko, Thomas J.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Headed fastener element with nut, washer, securing means or cap
Lap bolt or fastener
108 563, 411 78, 411510, F16B 2107, F16B 2108
Patent
active
046040145
ABSTRACT:
A two-part fastener made of resilient material is disclosed as comprising two identical mating fastening devices. Each fastening device is constructed with a circular disc head integrally formed with a shank. The shank has an elongate symmetrically-shaped body having a longitudinal central axis and is formed with a pair of leg members disposed along the central axis in diametrically opposed spaced apart relation. Each leg member is formed by two wall elements molded together in a V-shaped configuration wth the outer end portion laterally spaced apart from the adjoining leg member a distance sufficient to embracingly receive the pair of leg members of the identical fastening device. When the identical fastening devices are brought together in a nesting relationship, they are locked together by virtue of the interlocking cooperating relationship of a plurality of tooth formations formed on one of the two V-shaped wall elements of each leg member.
REFERENCES:
patent: 2201551 (1940-05-01), Welk
patent: 2797605 (1957-07-01), Metze et al.
patent: 3004784 (1961-10-01), Selby
patent: 3483787 (1969-12-01), Saunders
patent: 3518915 (1970-07-01), Gutshall
patent: 3647306 (1972-03-01), Chamberlin
patent: 3824933 (1974-07-01), Lind
patent: 4128253 (1978-12-01), Powers
patent: 4267781 (1981-05-01), Powers
Buckman T. W.
Holko Thomas J.
Illinois Tool Works Inc.
O'Brien J. P.
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