Torque limiting bolt for power wrench tightening

Details Torque limiting bolt for power wrench tightening Torque limiting bolt for power wrench tightening

1991-03-20

1992-04-28

Wilson, Neill R.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Torque responsive nut or bolt driving connection

Frangible connection

411405, 411919, 81 55, F16B 3100, F16B 3304, B25B 1700

Patent

active

051082381

ABSTRACT:
A torque limiting bolt for tightening by a power wrench comprises a threaded shank, a tightening head at one end of the shank, a retaining head at the other end of the shank and a nut in threaded engagement with the threaded shank, the tightening head being an eight point head having sixteen external facets of equal size and uniform spacing around the circumference of the head. The power wrench is provided with oppositely rotatable inner and outer sockets engaging the driving head and the nut, respectively, the inner socket being an eight point socket having sixteen internal facets.

REFERENCES:
patent: 2928302 (1960-03-01), Owen et al.
patent: 3138987 (1964-06-01), Wing
patent: 4403529 (1983-09-01), Ikeda et al.
patent: 4565112 (1986-01-01), Fujita et al.
patent: 4637764 (1987-01-01), Imai
patent: 4659267 (1987-04-01), Uno et al.
patent: 4836063 (1989-06-01), Fushiya

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