Geotechnical cone lubrication apparatus and method

Details Geotechnical cone lubrication apparatus and method Geotechnical cone lubrication apparatus and method

1983-07-12

1985-02-19

Novosad, Stephen J.

Boring or penetrating the earth

Boring without earth removal

Fluid passage to exterior of drive point

73 84, 405248, F21B 1102

Patent

active

044999542

ABSTRACT:
Apparatus and method for lubricating a string of hollow rods connected to a cone penetrometer within a probe hole, as used in geotechnical "in situ" testing. The rods have aligned bores to receive a drilling or lubricating fluid which passes along the rods to a perforated lubricating apparatus extending between an inner end of the string of rods and the cone penetrometer. Preferably a major portion of an outer surface of the lubricating apparatus is within a maximum cross-section of the cone penetrometer. A longitudinal bore within the lubricating apparatus communicates with a plurality of lubricating openings in the outer surface of the lubricating apparatus body. Thus lubricating fluid within the string of rods passes in to the longitudinal bore of the body and is dispersed through the plurality of the lubricating openings to the outer surface of the body, so as to stabilize side wall of the probe hole and to lubricate the string of drill rods within the probe hole.

REFERENCES:
patent: 70764 (1867-11-01), Wagner
patent: 95878 (1869-10-01), Brummel
patent: 102647 (1870-05-01), Ayres
patent: 735769 (1903-08-01), Higgins
patent: 2107495 (1938-02-01), Otto
patent: 2129978 (1938-09-01), Yokoyama
patent: 3040810 (1962-06-01), Muller
patent: 3084553 (1963-04-01), Cullinan
patent: 3397542 (1968-08-01), Moulden
patent: 4359890 (1982-11-01), Coelus
patent: 4382384 (1983-05-01), Mitchell

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