Centering device that can be engaged or disengaged, specifically

Details Centering device that can be engaged or disengaged, specifically Centering device that can be engaged or disengaged, specifically

1988-12-22

1991-02-05

Britts, Ramon S.

Boring or penetrating the earth

With tool shaft detail

Shaft carried guide or protector

175 83, 166237, E21B 1710

Patent

active

049896792

ABSTRACT:
A centering device for an assembly, particularly for drilling, having at least one centering device relative to which the assembly rotates. A driving arrangement is provided for rotationally driving the centering device, with the driving arrangement including a friction clutch in the form of, for example, a disk clutch, cone clutch, or drum clutch.

REFERENCES:
patent: 1937234 (1933-11-01), Lansing
patent: 2072320 (1937-03-01), Thomas
patent: 3370657 (1968-02-01), Antle
patent: 3656565 (1972-04-01), Fox
patent: 3746137 (1973-07-01), Ruschke, Jr.
patent: 3909151 (1975-09-01), Regenbrecht
patent: 4209070 (1980-06-01), Sudnishnikov et al.
patent: 4606417 (1986-08-01), Webb et al.
patent: 4733577 (1988-03-01), Griesser et al.
patent: 4807732 (1989-02-01), Lehle

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