Rotary cone drill bit

Description

FIG. 1 is a perspective view of the a rotary cone drill bit showing our new design;

FIG. 2 is a first side elevational view thereof;

FIG. 3 is a second side elevational view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

Claims

The ornamental design for a rotary cone drill bit, as shown.

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Inventors:	Huffstutler; Alan Dee (Grand Prairie, TX), Campos, Jr.; Harry Morales (Grand Prairie, TX)
Assignee:	Dresser Industries, Inc. (Dallas, TX)
Appl. No.:	D/043,782
Filed:	September 12, 1995

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Related U.S. Patent Documents

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	Application Number	Filing Date	Patent Number	Issue Date
	33599	Jan 17, 1995

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Current U.S. Class:	D15/139
Current International Class:	1509
Field of Search:	;D15/139 ;175/374,426,378,406,429,353,359,371,372,342,341,376,377,340

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References Cited [Referenced By]

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U.S. Patent Documents

Re19339	October 1934	Vertson
Re32495	September 1987	Coates
D265205	June 1982	Munson
1906427	May 1933	Sievers et al.
1908049	May 1933	Reed
2030723	February 1936	Scott et al.
2047112	May 1936	Reed
2063012	December 1936	Catland
2064273	December 1936	Scott
2065743	December 1936	Reed
2068375	January 1937	Catland
2124521	July 1938	Williams et al.
2151347	March 1939	Fisher
2176358	October 1939	Pearce
2260487	October 1941	Scott
2318370	May 1943	Burch
2634105	April 1953	Gruner
2648526	August 1953	Lanchester
2782005	February 1957	Appleton
2950090	August 1960	Swart
3130801	April 1964	Schumacher, Jr.
3442342	May 1969	McElya et al.
3628616	December 1971	Neilson
3800891	April 1974	White et al.
3825083	July 1974	Flarity et al.
3850256	November 1974	McQueen
4054772	October 1977	Lichte
4056153	November 1977	Miglierini
4067406	January 1978	Garner et al.
4098448	July 1978	Sciaky et al.
4145094	March 1979	Verizian
4209124	June 1980	Baur et al.
4256194	March 1981	Varel
4280571	July 1981	Fuller
4333364	June 1982	Varel
4350060	September 1982	Vezirian
4352400	October 1982	Grappendorf et al.
4369849	January 1983	Parrish
4417629	November 1983	Wallace
4421184	December 1983	Mullins
4552232	November 1985	Frear
4623027	November 1986	Vezirian
4624329	November 1986	Evans et al.
4630693	December 1986	Goodfellow
4635728	January 1987	Harrington
4711143	December 1987	Loukanis et al.
4727943	March 1988	Wood
4750573	June 1988	Wynn
4765205	August 1988	Higdon
4813502	March 1989	Dysart
4817852	April 1989	Hill
4848491	July 1989	Burridge et al.
4986375	January 1991	Maher
5040623	August 1991	Vezirian
5074367	December 1991	Estes
5131478	July 1992	Brett et al.
5145016	September 1992	Estes
5158148	October 1992	Keshavan
5189932	March 1993	Palmo et al.
5199516	April 1993	Fernandez
5224560	July 1993	Fernandez
5281260	January 1994	Kumac et al.
5289889	March 1994	Gearhart et al.
5351768	October 1994	Scott et al.
5439067	August 1995	Huffstutler
5439068	August 1995	Huffstutler et al.

Foreign Patent Documents

	936382 U		Dec 1955		DE
	533716		Oct 1976		SU
	1305295		Apr 1987		SU
	1467157		Mar 1989		SU

Other References

International Search Report, International Application No. PCT/US95/10115, dated Jan. 4, 1996. . U.S. Patent Application No. 08/422140, filed Apr. 13, 1995, entitled Rotary Drill Bit for Manufacture and Rebuild. . U.S. Patent Application No. 08/478455, filed Jun. 6, 1995, entitled Rotary Cone Drill Bit Modular Arm. . Security/Dresser "Security Oilfield Catalog" Rock Bits, Diamond Products, Drilling Tools, Security Means Technology, Nov., 1991-Nov., 1992. . "State of the Science in Rock Bit Techn." by Carlos Fernandez, SPACEBIT, Aug. 8, 1991. . U.S. Patent Application Serial No. 08/287,441, filed Aug. 8, 1994 and entitled Rotary Cone Drill Bit With Improved Support Arms (060220.0171). . U.S. Patent Application Serial No. 08/287,390, filed Aug. 8, 1994 and entitled Rotary Cone Drill Bit and Method for Manufacture and Rebuild (060220.0172). . U.S. Patent Application Serial No. 08/351,019 filed filed Dec. 7, 1994 and entitled Rotary Cone Drill Bit and Method for Enhanced Lifting of Fluids and Cuttings (060220.0178). . U.S. Patent Application Serial No. 08/350,910 filed Dec. 7, 1994 and entitled Rotary Cone Drill Bit With Angled Ramps (060220.0179). . U.S. Design Patent Serial 29/033,630 filed Jan. 17, 1995 and entitled Support Arm and Rotary Cone for Modular Drill Bit (060220.0174). . U.S. Patent Application Serial No. 29/033,599 filed Jan. 17, 1995 and entitled Rotary Drill Bit Design (060220.0173)..

Primary Examiner: Davis; Antoine Duval
Attorney, Agent or Firm: Baker & Botts, L.L.P.