Threaded engagement means

Details Threaded engagement means Threaded engagement means

1983-07-11

1985-11-05

Novosad, Stephen J.

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

Internally threaded fastener element, e.g., nut, etc.

Thread structure

411 38, 411247, 175320, 279 1ME, 279 1W, 279100, 285 92, 285390, 464 45, F16B 3712, E21B 17042

Patent

active

045510504

ABSTRACT:
According to a depicted embodiment thereof, the novel threaded engagement means comprises a drill rod coupling which is centrally bored and threaded to receive threaded drill rods. A stack of apertured discs, however, engages and lines the threaded bore. The discs intimately engage, and bridge between, the coupling and drill rod threads, and communicate torque therebetween. The coupling has a bearing surface or land upon which the discs are supported, and a retainer set in a recess formed in the coupling secures the disc stack in place.

REFERENCES:
patent: 2512316 (1950-06-01), Eckener
patent: 2605850 (1952-08-01), Kiekhaefer
patent: 2784428 (1957-03-01), Curran
patent: 3062568 (1962-11-01), Andersen et al.
patent: 3396557 (1968-08-01), Moore, Jr.
patent: 3687493 (1972-08-01), Lock et al.
patent: 3756628 (1973-09-01), St. Clair
patent: 4403409 (1977-08-01), Walter
patent: 4413689 (1983-11-01), Hughes et al.

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