Five 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." Catalogue/Brochure pages: "Diamond Drill Bits." Cristal Profor. Tarbes, France. Catalogue/Brochure pages: "A Strong Line of Natural Diamond and PDC Bits." Smith Diamond. Catalogue/Brochure pages: IADC S946, et al. Smith Diamond. Catalogue/Brochure pages: "Cut Drilling Costs 40 Percent or More with a Strata Bit PDC Bit Tailored to the Formation." Strata Bit. Catalogue/Brochure page: "The Fast Track to the Bottom Line," p. 8. Strata Bit. Catalogue/Brochure pages: "Standard PDC Bits; Standard Ringcutter PDC Bits; Gold Series Bits." Catalogue/Brochure page: "Hycalog Introduces the Hybrid-Fishtail." Hycalog. Catalogue/Brochure page: "Longer Bit Life and Superior Downhole Performance." Hycalog. Catalogue/Brochure pages: 6 3/4 in. DS42H, et al. Hycalog. Catalogue/Brochure pages: "Nortrak Navigation Drilling Systems." pp. 4-5. Nortrak. Catalogue/Brochure pages: "VIII. Diamond Drilling & Coring Bits," pp. 47-48. Eastman Christensen. Catalogue/Brochure pages: "Technical Data." Eastman Christensen. Catalogue/Brochure pages: Rock Digger 15, et al. Catalogue/Brochure pages: "Diamond Products." Smith International, pp. 12-13. Catalogue/Brochure page: "PD-7 Rotary and Motor Bit; PD-11 Rotary Bit; PD-11X2 Rotary Bit." Catalog/Brochure page: "Strata-Cut Drilling-Bits." Catalogue/Brochure pages: "TD 2000 Series Drill Bits; PD Steel Body Drill Bits." Diamond Boart Stratabit. Catalogue/Brochure pages: "Diamond Compact Bits (R-Series)." Norton Christensen Drilling Products. Catalogue/Brochure pages: "Bit Description". Catalogue/Brochure page: "Put the Best on the Bottom." BiTech. Catalogue/Brochure pages: 8 1/2 in Hornet 4, et al. Reed Tool Company. Catalogue/Brochure pages: "Diamond Compact Bits (R-Series)," pp. 11-12. Eastman Christensen. Catalogue/Brochure page: "Smith Diamond's New S-95: The right Direction in Soft Formations." Smith International. Catalogue/Brochure pages: "Drilling Bits." Petroleum Diamond Products. Catalogue/Brochure page: "Diataq DS."
Patent History
Patent number: D403336
Type: Grant
Filed: Dec 2, 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
Attorney: Browning Bushman
Application Number: 0/80,371
Classifications
Current U.S. Class: Cutting Tool, E.g., Drill Bit, Etc. (D15/139)
International Classification: 1509;