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Patent
   D307279
Priority
Oct 16 1986
Filed
Oct 16 1986
Issued
Apr 17 1990
Expiry
Apr 17 2004
Inventors
Vincent, L…
Assg.orig
EASTMAN CH…
Assg.curr
Eastman Ch…
Entity
unknown
Referenced by
17
References
11
Maint.:
n/a
The ornamental design for a cutting tooth for a rotating drag bit, as shown and described.

FIG. 1 is a top, front, and right side perspective view of a cutting tooth for a rotating drag bit showing my new design;

FIG. 2 is a left side elevational view;

FIG. 3 is a top plan view;

FIG. 4 is a rear elevational view; and,

FIG. 5 is a bottom plan view thereof.
INVENTORS:

Vincent, Lloyd

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THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
3771612,
4181187, Mar 03 1977 SANTRADE LTD , A CORP OF SWITZERLAND Rock drill bit with stress relief insert sockets
4211508, Jul 03 1974 Hughes Tool Company Earth boring tool with improved inserts
4452324, Oct 21 1980 Eastman Christensen Company Rotary drill bit
4471845, Apr 01 1981 Eastman Christensen Company Rotary drill bit
4505342, Nov 22 1982 REED HYCALOG OPERATING LP Drill bit
4545441, Feb 25 1981 Dresser Industries, Inc; Baker Hughes Incorporated; Camco International, Inc Drill bits with polycrystalline diamond cutting elements mounted on serrated supports pressed in drill head
4577706, Sep 16 1982 NL Petroleum Products Limited Rotary drill bits
4705124, Aug 22 1986 Minnesota Mining and Manufacturing Company; MINNESOTA MINING AND MANUFACTURING COMPANY, A CORP OF DE Cutting element with wear resistant crown
4722405, Oct 01 1986 Halliburton Energy Services, Inc Wear compensating rock bit insert
4733734, Jul 27 1984 Institut Francais du Petrole Method and improvement to drilling tools comprising water passages providing great efficiency in cleaning the cutting face
ASSIGNMENT RECORDS    Assignment records on the USPTO
//
Executed onAssignorAssigneeConveyanceFrameReelDoc
Oct 01 1986VINCENT, LLOYD R EASTMAN CHRISTENSEN COMPANY, A JOINT VENTURE OF DE ASSIGNMENT OF ASSIGNORS INTEREST 0046190099 pdf
Oct 16 1986Eastman Christensen Company(assignment on the face of the patent)
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