Rotary drill bit with strainer element

Details Rotary drill bit with strainer element Rotary drill bit with strainer element

1985-07-25

1986-11-25

Leppink, James A.

Boring or penetrating the earth

Bit or bit element

With fluid conduit lining or element

175340, 166235, E21B 1060

Patent

active

046243305

ABSTRACT:
A rotary drill bit comprising a tubular strainer element co-axially arranged within the body of the bit and being provided with narrow axial slots arranged to prevent solid debris from passing to the nozzles of the bit. The self-cleaning ability of the strainer element is enhanced by increasing the bore of the strainer element in the region below the slots.

REFERENCES:
patent: 3145783 (1964-08-01), Sibley
patent: 4336850 (1982-06-01), Fielder
patent: 4341273 (1982-07-01), Walker et al.

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