Four blade drill bit

- Dresser Industries, Inc.
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Description

FIG. 1 is a top plan view of a four blade drill bit showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a top, front, left side perspective view thereof.

Referenced Cited
U.S. Patent Documents
D340248 October 12, 1993 Brady
D351174 October 4, 1994 Brady
4373593 February 15, 1983 Phaal et al.
5007493 April 16, 1991 Coolidge et al.
5111895 May 12, 1992 Griffin
5159857 November 3, 1992 Jurewicz
5443565 August 22, 1995 Strange, Jr.
5549171 August 27, 1996 Mensa-Wilmot et al.
5551522 September 3, 1996 Keith et al.
5582261 December 10, 1996 Keith et al.
5651421 July 29, 1997 Newton et al.
Other references
  • Catalogue/Brochure pages: "DP6 PDC Drill Bit." Admitted prior art. Catalogue/Brochure pages: "Diamond Drill Bits." Cristal Profor. Tarbes, France. Admitted prior art. Catalogue/Brochure pages: "A Strong Line of Natural Diamond and PDC Bits." Smith Diamond. Admitted prior art. Catalogue/Brochure pages: IADC S946, et al. Smith Diamond. Admitted prior art. Catalogue/Brochure pages: "Cut Drilling Costs 40 Percent or More with a Strata Bit PDC Bit Tailored to the Formation." Strata Bit. Admitted prior art. Catalogue/Brochure page: "The Fast Track to the Bottom Line," p. 8. Strata Bit. Admitted prior art. Catalogue/Brochure pages: "Standard PDC Bits; Standard Ringcutter PDC Bits; Gold Series Bits." Admitted prior art. Catalogue/Brochure page: "Hycalog Introduces the Hybrid-Fishtail." Hycalog. Admitted prior art. Catalogue/Brochure page: "Longer Bit Life and Superior Downhole Performance." Hycalog. Admitted prior art. Catalogue/Brochure pages: 6 3/4 in. DS42H, et al. Hycalog. Admitted prior art. Catalogue/Brochure pages: "Nortrak Navigation Drilling Systems," pp. 4-5. Nortrak. Admitted prior art. Catalogue/Brochure pages: "VIII. Diamond Drilling & Coring Bits," pp. 47-48. Eastman Christensen. Admitted prior art. Catalogue/Brochure pages: "Technical Data." Eastman Christensen. Admitted prior art. Catalogue/Brochure pages: Rock Digger 15, et al. Admitted prior art. Catalogue/Brochure pages: "Diamond Products." Smith International, pp. 12-13. Admitted prior art. Catalogue/Brochure page: "PD-7 Rotary and Motor Bit; PD-11 Rotary Bit; PD-11X2 Rotary Bit." Admitted prior art. Catalogue/Brochure page: "Strata-Cut Drilling-Bits." Admitted prior art. Catalogue/Brochure pages: "TD 2000 Series Drill Bits; TD Drill Bits; PD Steel Body Drill Bits." Diamont Boart Stratabit. Admitted prior art. Catalogue/Brochure pages: "Diamond Compact Bits (R-Series)." Norton Christensen Drilling Products. Admitted prior art. Catalogue/Brochure pages: "Bit Description" Admitted prior art. Catalogue/Brochure page: "Put the Best on the Bottom." BiTech. Admitted prior art. Catalogue/Brochure pages: 8 1/2 in Hornet 4, et al. Reed Tool Company. Admitted prior art. Catalogue/Brochure pages: "Diamond Compact Bits (R-Series)," pp. 11-12. Eastman Christensen. Admitted prior art. Catalogue/Brochure page: "Smith Diamond's New S-95: The Right Direction in Soft Formations." Smith International. Admitted prior art. Catalogue/Brochure pages: "Drilling Bits." Petroleum Diamond Products. Admitted prior art. Catalogue/Brochure pages: "Diataq DS." Admitted prior art.
Patent History
Patent number: D403335
Type: Grant
Filed: Dec 1, 1997
Date of Patent: Dec 29, 1998
Assignee: Dresser Industries, Inc. (Houston, TX)
Inventors: Robert W. Arfele (Houston, TX), George A. Espiritu (Houston, TX), Ed R. Martin, Jr. (Spring, TX)
Primary Examiner: Antoine Duval Davis
Law Firm: Browning Bushman
Application Number: 0/80,142
Classifications
Current U.S. Class: Cutting Tool, E.g., Drill Bit, Etc. (D15/139)
International Classification: 1509;