Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element
Reexamination Certificate
2006-03-28
2006-03-28
Bagnell, David (Department: 3672)
Boring or penetrating the earth
Bit or bit element
Rolling cutter bit or rolling cutter bit element
C175S351000, C175S368000, C299S079100
Reexamination Certificate
active
07017683
ABSTRACT:
A cutter for a tunnel boring machine is equipped with a cutter body (1) with a slanting surface (2), a cylindrical contact surface (12) and a preferably tapered threaded portion with specially designed threads (6), a clamping ring (4) with threads adapted to the cutter body's threads with a slanting surface (5) with a groove (13) with a spring (14). The cutter has an undivided (3) or divided cutter ring (with segments3a, 3b) with a cross section with slanting lateral surfaces (7, 8) in the foot and a cylindrical contact surface (11). The diameter of the cutter ring's cylindrical contact surface (11) has a clearance tolerance relative to the diameter of the cylindrical contact surface (12) of the cutter body.
REFERENCES:
patent: 3586351 (1971-06-01), Vanderveen et al.
patent: 3662468 (1972-05-01), Kolb et al.
patent: 3707315 (1972-12-01), Goodfellow
patent: 3982595 (1976-09-01), Ott
patent: 4004645 (1977-01-01), Rees et al.
patent: 4793427 (1988-12-01), Lambson
patent: 5253723 (1993-10-01), Narvestad
patent: 5341889 (1994-08-01), Narvestad
patent: 5421422 (1995-06-01), Crane
patent: 5961185 (1999-10-01), Friant et al.
patent: 6343842 (2002-02-01), Sauer et al.
patent: 169859 (1991-10-01), None
patent: WO 88/05117 (1988-07-01), None
Abel Christian D.
Bagnell David
Bomar Shane
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