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公开(公告)号：US3075781A
公开(公告)日：1963-01-29
申请号：US71429658
申请日：1958-02-10
Applicant: HUGHES TOOL CO
Inventor： ATKINSON GERALD O , CLINE JR WILLIAM H , CUNNINGHAM ROBERT A
CPC classification number: E21B10/25
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公开(公告)号：CA1238895A
公开(公告)日：1988-07-05
申请号：CA491355
申请日：1985-09-23
Applicant: HUGHES TOOL CO
Inventor： SCALES STANLEY R , SHOTWELL DUANE E , ATKINSON GERALD O
Abstract: An earth boring bit having an improved two piece bearing construction using an internally tapered and threaded, cantilevered bearing lug extending obliquely inwardly and downwardly from a leg carried by the body of the bit. An internally tapered and threaded bearing sleeve is made up on the lug, and includes a mouth that engages a shoulder on a base region of the bearing lug. The mouth of the sleeve has a minimum radial thickness such that the sleeve may be made up to a selected minimum torque. The bearing sleeve has a length greater than that of the treaded portion to define a thick walled inner end region to receive a resilient retainer ring in a groove that provides a minimum section over the threads on the the interior of the sleeve. The sleeve is boronized to achieve wear resistance in a manner that does not substantially reduce strength.
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公开(公告)号：CA1182623A
公开(公告)日：1985-02-19
申请号：CA404203
申请日：1982-06-01
Applicant: HUGHES TOOL CO
Inventor： ATKINSON GERALD O
Abstract: A method of assembling sections of an earth boring bit for welding has features to assure precise bit geometry. The method includes a step of providing a hole in each bit section at the centerline of the 120 degree faces on the interiors of the sections. A triad is constructed for use in assembly and consists of three pins joined together on one end, each having an axis 120 degrees apart from the other axes of the pins. The triad is positioned in the holes in the 120 degree faces when the three sections of the bit are brought together. The shank ends of the sections have holes for receiving dowels located in the welding fixture. Once the sections are positioned and pinned against movement at the shank ends and at the triad, the sections are clamped, then welded.
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公开(公告)号：CA1216010A
公开(公告)日：1986-12-30
申请号：CA432667
申请日：1983-07-18
Applicant: HUGHES TOOL CO
Inventor： ATKINSON GERALD O
Abstract: A method and a clamping assembly for securing rock bit sections during welding. The assembly has a chuck jaw that is supported by metal rods, which give the assembly enough resiliency to conform to the shape of the rock bit and which keep the chuck jaw parallel to the base so that the point of engagement between the chuck jaw and the rock bit section remains constant.
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公开(公告)号：CA976948A
公开(公告)日：1975-10-28
申请号：CA190478
申请日：1974-01-18
Applicant: HUGHES TOOL CO
Inventor： ATKINSON GERALD O
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Patent Agency Ranking
公开(公告)号：CA1238804A
公开(公告)日：1988-07-05
申请号：CA471384
申请日：1985-01-03
Applicant: HUGHES TOOL CO
Inventor： ATKINSON GERALD O
Abstract: A method for shanking a rock bit utilizing a shank locator and a cone locator, each with tapered surfaces to engage respectively the tail stock of a lathe and the cones of a rock bit, to accurately align the body and the cones of the bit concentric with the design centerline of the bit. The lathe and cone locators each have interior conical surfaces to assure accurate, coaxial alignment of the shank end and the cone end of the bit. A compensating chuck is used to grip the cone end of the bit body and firmly hold the normally uneven surfaces while the threads are being machined.
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公开(公告)号：CA715919A
公开(公告)日：1965-08-17
申请号：CA715919D
Applicant: HUGHES TOOL CO
Inventor： GALLE EDWARD M , ATKINSON GERALD O , MEDLOCK JAMES D
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公开(公告)号：CA639572A
公开(公告)日：1962-04-10
申请号：CA639572D
Applicant: HUGHES TOOL CO
Inventor： ATKINSON GERALD O , CLINE WILLIAM H JR , CUNNINGHAM ROBERT A
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公开(公告)号：MX158208A
公开(公告)日：1989-01-16
申请号：MX19540382
申请日：1982-11-30
Applicant: HUGHES TOOL CO
Inventor： ATKINSON GERALD O
Abstract: A method of assembling sections of an earth boring bit for welding has features to assure precise bit geometry. The method includes a step of providing a hole in each bit section at the centerline of the 120 degree faces on the interiors of the sections. A triad is constructed for use in assembly and consists of three pins joined together on one end, each having an axis 120 degrees apart from the other axes of the pins. The triad is positioned in the holes in the 120 degree faces when the three sections of the bit are brought together. The shank ends of the sections have holes for receiving dowels located in the welding fixture. Once the sections are positioned and pinned against movement at the shank ends and at the triad, the sections are clamped, then welded.
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公开(公告)号：ZA828156B
公开(公告)日：1983-09-28
申请号：ZA828156
申请日：1982-11-05
Applicant: HUGHES TOOL CO
Inventor： ATKINSON GERALD O
Abstract: A method of assembling sections of an earth boring bit for welding has features to assure precise bit geometry. The method includes a step of providing a hole in each bit section at the centerline of the 120 degree faces on the interiors of the sections. A triad is constructed for use in assembly and consists of three pins joined together on one end, each having an axis 120 degrees apart from the other axes of the pins. The triad is positioned in the holes in the 120 degree faces when the three sections of the bit are brought together. The shank ends of the sections have holes for receiving dowels located in the welding fixture. Once the sections are positioned and pinned against movement at the shank ends and at the triad, the sections are clamped, then welded.
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