Drill for water wells

Details Drill for water wells Drill for water wells

1990-08-24

1991-12-10

Novosad, Stephen J.

Boring or penetrating the earth

Cutter element laterally shiftable below ground

Cutter element shifted by longitudinally relatively movable...

175412, 175424, E21B 1032, E21B 1062

Patent

active

050709518

ABSTRACT:
A rotary well drilling unit, particularly for water wells, comprises a tubular rotatable drill string string through which water is pumped. Attached to the lower end of the drill string is a drill head having side-by-side cutter blades. The cutter blades are cammed radially outwardly to expand in diameter when the drill string is lowered to drill a hole sized to receive a well casing lowered behind the drill, and are cammed radially inwardly so as to contract in diameter to clear the casing when the string is lifted. The same drill may be used for drilling wells of different diameters by merely substituting cutter blades.

REFERENCES:
patent: 654164 (1900-07-01), Lawrence
patent: 1669467 (1928-05-01), Harris
patent: 2178852 (1939-11-01), Dunlap, Jr.
patent: 2225165 (1940-12-01), Dunlap, Jr.
patent: 2279562 (1942-04-01), Dunlap, Jr.
patent: 3004615 (1961-10-01), Schutte

Affiliated with

Also associated with

Rating

Drill for water wells does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Drill for water wells, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drill for water wells will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1034085