Boring or penetrating the earth – With tool shaft detail – Shaft carried guide or protector
Reexamination Certificate
2011-06-07
2011-06-07
Thompson, Kenneth (Department: 3672)
Boring or penetrating the earth
With tool shaft detail
Shaft carried guide or protector
C175S325500, C166S241600
Reexamination Certificate
active
07954567
ABSTRACT:
An adjustable centering tool for use in pipes of varying inner diameter. The centering tool being provided with a number of identical and steplessly adjustable, radially protruding wings having guiding lugs and chamfered end faces. The wings, having been set, are retained by an upper lock mandrel with a safety pin and a lower lock mandrel with a safety nut. The outer circumference of a cylindrical tool body is fitted with longitudinal grooves having sloped terminations cooperating with the wing dimensions, the chamfered end faces of the wings, and the guiding lugs.
REFERENCES:
patent: 1910123 (1933-05-01), Reisinger
patent: 2389906 (1945-11-01), Heard
patent: 2427052 (1947-09-01), Grant
patent: 3282349 (1966-11-01), Cobbs et al.
patent: 3545825 (1970-12-01), Hamilton
patent: 4106823 (1978-08-01), Bassinger
patent: 4798246 (1989-01-01), Best
patent: 5332048 (1994-07-01), Underwood et al.
patent: 5487426 (1996-01-01), O'Hair
patent: 5931239 (1999-08-01), Schuh
patent: 6494272 (2002-12-01), Eppink et al.
patent: 7048064 (2006-05-01), Smith
patent: 0 594 418 (1994-04-01), None
patent: 2 277 336 (1994-10-01), None
International Search Report mailed Nov. 14, 2006 for International Application No. PCT/NO06/000290.
I-Tec AS
Thompson Kenneth
Wenderoth , Lind & Ponack, L.L.P.
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