Boring or penetrating the earth – With tool shaft detail
Patent
1986-12-17
1988-05-24
Novosad, Stephen J.
Boring or penetrating the earth
With tool shaft detail
175306, 175414, 285 45, 285302, E21B 1707, E21B 1710
Patent
active
047459832
ABSTRACT:
The present invention relates to a seat protector device of the type which may be employed with drill rods for transmission of thrust from a driving member to a driven member. More specifically, the invention relates to an improved drill rod system for earth drilling where the rod also provides an axial passageway for a fluid to carry drill cuttings away from the cutting area. The seat protector device of the present invention may be detachably inserted between one or more drill rod sections and/or between one of the drill rods and the drill bit and/or between one of the drill rod members and the driving chuck for transmitting thrust load forces while simultaneously reducing damage and/or wear between the component parts.
REFERENCES:
patent: 2756022 (1956-07-01), Sturgeon
patent: 3013793 (1961-12-01), Howell et al.
patent: 3554306 (1971-01-01), Wilburn
patent: 4043409 (1977-08-01), Walter
patent: 4632195 (1986-12-01), Emmerich
Moorehead John L.
Shaw Ray H.
Melius Terry Lee
Novosad Stephen J.
Sandvik Rock Tools, Inc.
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