Blockless reamer

Details Blockless reamer Blockless reamer

2006-02-21

2006-02-21

Bates, Zakiya W. (Department: 3676)

Boring or penetrating the earth

Bit or bit element

Noncutting portion forwardly of cutting portion

C175S325300, C175S346000

Reexamination Certificate

active

07000713

ABSTRACT:
A blockless reamer drilling tool comprising an elongated tool body and a reamer unit. The reamer unit includes, a shaft having a first end and a second end and a cutter mounted on the shaft between the first and second ends. A pocket on the exterior surface of the tool body is sized to accept the reamer unit with a portion of the reamer unit recessed in the pocket. A plurality of pins engage the tool body and secure the reamer unit within the pocket. The plurality of pins includes a first pin engaging the tool body and passing through the shaft at the first end and a second pin engaging the tool body and passing through the shaft at the second end.

REFERENCES:
patent: 2872159 (1959-02-01), Autry
patent: 3680646 (1972-08-01), Hughes et al.
patent: 4508184 (1985-04-01), Hansen
patent: 5381868 (1995-01-01), Schock

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