Fixed-head bit with stabilizing features

Details Fixed-head bit with stabilizing features Fixed-head bit with stabilizing features

2007-12-18

2007-12-18

Bagnell, David (Department: 3672)

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

Reexamination Certificate

active

11037553

ABSTRACT:
A fixed-head drill bit includes a bit body having a plurality of cutting elements and at least one wear knuckle disposed on the bit body. Each cutting element includes a cutting surface defining a swept cutting profile when the bit is rotated about an axis. The at least one wear knuckle is positioned at least partially within and extending at least partially outside a selected one or more of the swept cutting profiles, allowing the fixed-head drill bit to wear into a more stable configuration.

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Combined Search and Examination Report issued in corresponding British Application No. GB0600822.1; Dated May 23, 2006; 5 pages.
Office Action dated Apr. 26, 2007 issued by the Canadian Intellectual Property Office in Canadian Application No. 2,532,762, 2 pages.
Office Action dated May 1, 2007 issued by the European Patent Office in U.K. Application No. GB0600822.1, 2 pages.

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