Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Internally threaded fastener element – e.g. – nut – etc. – Multipart
Patent
1994-02-17
1995-02-28
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Internally threaded fastener element, e.g., nut, etc.
Multipart
411361, 411533, 411999, F16B 3708, F16B 4300
Patent
active
053931831
ABSTRACT:
A captive nut comprises an internally threaded nut body having torque receiving wrench pads and an annular truncated conical surface terminating in a radially extending load transfer surface. The nut body is accepted in a complementary cup-shaped washer having a conical cylindrical wall portion complementary to the conical wall portion of the nut body so as to retain the nut body. An initially truncated conical retention element is disposed between the load transfer surface of the nut body and a radial portion of the cup-shaped washer. Torquing of the nut body toward a workpiece effects deformation of the retention element nut into a complementary annular recess in the bolt thereby permanently capturing the nut on the bolt.
REFERENCES:
patent: 67451 (1867-08-01), Pratt
patent: 134204 (1872-12-01), Horton
patent: 797673 (1905-08-01), Fish
patent: 926953 (1909-07-01), Mervin
patent: 1570148 (1925-04-01), Herr
patent: 2506953 (1950-05-01), Dzus
patent: 3209806 (1965-10-01), Currier et al.
patent: 3209807 (1965-10-01), Ryner
patent: 4026060 (1977-05-01), Barnes
patent: 4571133 (1986-02-01), Lindow
patent: 5219255 (1993-06-01), Hussain et al.
Kaynar Technologies, Inc.
Lyon Lyman R.
Wilson Neill R.
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