Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Having structure to restrict rotation of threaded – mating... – Structure is coaxial – distinct member that restricts nut piece
Patent
1992-02-10
1993-09-28
Lindsey, Rodney M.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Having structure to restrict rotation of threaded, mating...
Structure is coaxial, distinct member that restricts nut piece
411223, 411931, F16B 3912
Patent
active
052482324
ABSTRACT:
The nut includes a first half having a short shank with an internal screw thread therethrough and an external screw thread on the short shank and a second half with a threaded bore. The internal thread has a first pitch and the external thread has a second screw pitch, the second and third screw pitches having different vertical lengths. The threaded bore includes a first section and a second section wider than the first section and the length of the short shank. The first section has a screw pitch equal to the first screw pitch and the second section has a third screw pitch slightly finer than that of the second screw pitch.
REFERENCES:
patent: 257854 (1882-05-01), Dillon
patent: 876081 (1908-01-01), Orr
patent: 909118 (1909-01-01), Richards et al.
patent: 1077119 (1913-10-01), Bixby
patent: 1157596 (1915-10-01), Sherman
patent: 3079181 (1963-02-01), Wissel
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