Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having structure to restrict rotation of threaded – mating... – Comprising a thread lock
Patent
1993-06-23
1994-08-02
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having structure to restrict rotation of threaded, mating...
Comprising a thread lock
411383, 411 82, F16B 3502, F16B 3928
Patent
active
053339762
ABSTRACT:
A spacing bolt assembly for securing to a surface includes a cylindrical inner bolt portion having a first end with external threads in a first direction and a second end with a head structure, an outer bolt portion having an axial bore for receiving the inner bolt portion and having a first end with external threads in a second direction and having a second end, and an aperture in the surface containing a central bore segment sized and threaded in the first direction to receive the first end of the inner bolt portion and a counterbore segment sized and threaded in the second direction to receive the first end of the outer bolt portion, so that the outer bolt portion can be screwed into the counterbore segment to a depth leaving a desired exposed length of the outer bolt portion protruding, and the inner bolt portion can be inserted through the axial bore and screwed into the central bore segment until the inner bolt portion head structure abuts and engages with friction the second end of the outer bolt portion to lock the inner and outer bolt portions together against rotation in either direction. The aperture is preferably provided in a mounting base portion including a plate to place against the surface and into which the aperture extends, and a structure for fastening the plate to the surface. A mass of solid material preferably extends from the plate into the surface, into which the aperture extends from the plate.
REFERENCES:
patent: 268607 (1882-12-01), Bell
patent: 634090 (1899-10-01), Mott
patent: 824983 (1906-07-01), Farrington
patent: 827230 (1906-07-01), Goeppinger
patent: 1368106 (1921-02-01), Brandt
patent: 2681281 (1954-06-01), Medders
patent: 2823574 (1958-02-01), Rosan
patent: 3461769 (1969-08-01), Brosseit
patent: 4108407 (1978-08-01), Cable et al.
patent: 4186645 (1980-02-01), Zaydel
patent: 4295765 (1981-10-01), Burke
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