Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Nut – and means to engage substructure on its opposite faces...
Patent
1984-02-17
1985-09-24
Holko, Thomas J.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Threaded fastener locked to a discreet structure
Nut, and means to engage substructure on its opposite faces...
411188, F16B 3704, F16B 3900
Patent
active
045430233
ABSTRACT:
An improved fastener has a head section and an axially extending shank section. A thread convolution is disposed in a coaxial relationship with the head and shank sections. An improved holding action against rotational and axial movement of the fastener relative to a metal base member is promoted by a plurality of radially extending wedge-shaped compression ramps. The compression ramps are disposed on the head section and slope radially and axially inwardly toward the shank section. The compression ramps are effective to force metal of the base member into an annular groove which circumscribes and undercuts at least a portion of the shank section. The metal which is received in the undercut portion of the groove is effective to hold the fastener against being pushed or pulled axially outwardly from the base member. The compression ramps also force the metal of the base member radially inwardly against corners formed on the shank section of the fastener to hold the fastener against rotation. In addition, the compression ramps are embedded in the base member to further hold the fastener against rotation relative to the base member. The compression ramps are separated by flat arcuate stop surface areas which limit the extent to which the fastener is pressed into the base member.
REFERENCES:
patent: 1112525 (1914-10-01), Darling
patent: 1759339 (1930-05-01), Andren
patent: 2486769 (1949-11-01), Watson
patent: 2741289 (1956-04-01), Grow
patent: 3078900 (1963-02-01), Walker
patent: 3127919 (1964-04-01), Swanstrom
patent: 3133579 (1964-05-01), Grimm et al.
patent: 3204679 (1965-09-01), Walsh
patent: 3213914 (1965-10-01), Baumle et al.
patent: 3253631 (1966-05-01), Ruesser
patent: 3399705 (1968-09-01), Breed et al.
patent: 3640326 (1972-02-01), Brown
patent: 3736969 (1973-06-01), Warn et al.
patent: 3750525 (1973-08-01), Waters et al.
patent: 3782436 (1974-01-01), Steiner
patent: 3813179 (1974-05-01), Priest
patent: 3910331 (1975-10-01), Randall
patent: 3967669 (1976-07-01), Egner
Holko Thomas J.
Russell Burdsall & Ward Corporation
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