| US 7,506,701 B2 | ||
| Drill bit assembly for directional drilling | ||
| David R. Hall, 2185 S. Larsen Pkwy., Provo, Utah 84606 (US); Francis E. Leany, 2185 S. Larsen Pkwy., Provo, Utah 84606 (US); Scott Dahlgren, 2185 S. Larsen Pkwy., Provo, Utah 84606 (US); David Lundgreen, 2185 S. Larsen Pkwy., Provo, Utah 84606 (US); and Daryl N. Wise, 2185 S. Larsen Pkwy., Provo, Utah 84606 (US) | ||
| Filed on Mar. 21, 2008, as Appl. No. 12/53,334. | ||
| Application 12/053334 is a continuation of application No. 11/306976, filed on Jan. 18, 2006, granted, now 7,360,610. | ||
| Application 11/306976 is a continuation in part of application No. 11/306307, filed on Dec. 22, 2005, granted, now 7,225,886. | ||
| Application 11/306307 is a continuation in part of application No. 11/306022, filed on Dec. 14, 2005, granted, now 7,198,119. | ||
| Application 11/306022 is a continuation in part of application No. 11/164391, filed on Nov. 21, 2005, granted, now 7,270,196. | ||
| Prior Publication US 2008/0179098 A1, Jul. 31, 2008 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. E21B 7/04 (2006.01) | ||
| U.S. Cl. 175—61 [175/73; 175/399] | 20 Claims |
| 1. A drill bit assembly, comprising:
a body portion intermediate a shank portion and a working portion;
the working portion comprising at least one cutting element; and
at least a portion of a shaft is disposed within the body portion and protrudes from the working portion; and
the shaft comprising a distal end rotationally isolated from the body portion; the distal end comprising an asymmetric geometry
with a face intersecting a central axis of the shaft, which is adapted to angle the shaft;
wherein the body of the drill bit is adapted to rotate around the shaft.
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