Limiting torque bolt-nut assembly

Details Limiting torque bolt-nut assembly Limiting torque bolt-nut assembly

1985-05-23

1986-12-09

Holko, Thomas J.

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

Torque responsive nut or bolt driving connection

Frangible connection

411410, F16B 2300, F16B 3506

Patent

active

046277749

ABSTRACT:
A limited torque bolt-nut assembly including a bolt shank having a threaded first end portion and a non-threaded second end portion, a secondary drive head on the second shank portion and a primary shearable drive head on the secondary drive head, and a hollow nut secured over both drive heads and a portion of the non-threaded shank section. The hollow nut drives the primary drive head which rotates relative to the secondary drive head until the primary drive head shears off at a predetermined torque releasing the nut and primary drive head. The secondary drive head remains on the bolt shank for adjustment and removal of the bolt.

REFERENCES:
patent: 3191486 (1965-06-01), Gibbens
patent: 3280689 (1966-10-01), Rubin
patent: 3602976 (1971-09-01), Grube
patent: 3929054 (1975-12-01), Gutshall
patent: 4046052 (1977-09-01), Nordstrom
patent: 4092036 (1978-05-01), Sato et al.
patent: 4131816 (1979-02-01), Gartner
patent: 4144796 (1979-03-01), Richter
patent: 4504180 (1985-03-01), Ishii et al.

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