Lock device for hollow stem augers

Details Lock device for hollow stem augers Lock device for hollow stem augers

1988-09-29

1989-07-04

Novosad, Stephen J.

Boring or penetrating the earth

With tool shaft detail

Helix or helically arranged structure

285404, 403324, 403362, 403378, E21B 17046, F16L 3714

Patent

active

048441848

ABSTRACT:
A locking device or button for hollow stem auger couplings including an outer body section having an internal bore, a locking pin assembly mounted within the bore, and cooperating cam structure for moving the pin assembly a predetermined distance between locked and unlocked positions. Seal means at opposite ends of the bore keeps water and dirt out of the bore and protects the cam structure.

REFERENCES:
patent: 2883012 (1959-04-01), Hoffman
patent: 2939727 (1960-06-01), Allen et al.
patent: 3190377 (1965-06-01), Rassieur
patent: 3258283 (1966-06-01), Winberg et al.
patent: 3356393 (1967-12-01), Casanov
patent: 3685865 (1972-08-01), Young
patent: 3796448 (1974-03-01), Ringkamp
patent: 3844127 (1974-10-01), Koop, Jr. et al.
patent: 4074912 (1978-02-01), Van Bilderbeek et al.
patent: 4368789 (1983-01-01), Orr et al.
patent: 4610517 (1986-09-01), Kukino et al.

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