CA2567415A1 - Protected lubricant reservoir for sealed bearing earth boring drill bit - Google Patents

Protected lubricant reservoir for sealed bearing earth boring drill bit Download PDF

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Publication number
CA2567415A1
CA2567415A1 CA002567415A CA2567415A CA2567415A1 CA 2567415 A1 CA2567415 A1 CA 2567415A1 CA 002567415 A CA002567415 A CA 002567415A CA 2567415 A CA2567415 A CA 2567415A CA 2567415 A1 CA2567415 A1 CA 2567415A1
Authority
CA
Canada
Prior art keywords
reservoir
lubricant reservoir
drill bit
sealed bearing
earth boring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002567415A
Other languages
French (fr)
Other versions
CA2567415C (en
Inventor
Robert H. Slaughter, Jr.
Peter T. Cariveau
Kirk A. Norris
Roger Didericksen
William M. Conn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Smith International Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority claimed from CA 2240023 external-priority patent/CA2240023C/en
Publication of CA2567415A1 publication Critical patent/CA2567415A1/en
Application granted granted Critical
Publication of CA2567415C publication Critical patent/CA2567415C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Earth Drilling (AREA)

Abstract

A rotary cone rock bit, comprises a bit body including a plurality of legs extending therefrom, each of the legs having an outer surface that includes a leading surface and a trailing surface. a roller cone rotatably supported on each of the legs, a bearing system between each cone and the leg on which it is supported, and a lubricant reservoir in fluid communication with the bearing system. The reservoir can be provided with a wear resistant plug, if desired. In the present bit, the reservoir has at least one opening positioned in either the leg's leading surface, trailing surface, center surface, shoulder surface or some combination of these. Alternatively, the reservoir can be formed inside the bit body, preferably by means of a canister, which can be provided with venting means as desired.
CA002567415A 1997-07-01 1998-06-08 Protected lubricant reservoir for sealed bearing earth boring drill bit Expired - Lifetime CA2567415C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US5137397P 1997-07-01 1997-07-01
US60/051,373 1997-07-01
US92586997A 1997-09-09 1997-09-09
US08/925,869 1997-09-09
CA 2240023 CA2240023C (en) 1997-07-01 1998-06-08 Protected lubricant reservoir for sealed bearing earth boring drill bit

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA 2240023 Division CA2240023C (en) 1997-07-01 1998-06-08 Protected lubricant reservoir for sealed bearing earth boring drill bit

Publications (2)

Publication Number Publication Date
CA2567415A1 true CA2567415A1 (en) 1999-01-01
CA2567415C CA2567415C (en) 2008-12-23

Family

ID=37663500

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002567415A Expired - Lifetime CA2567415C (en) 1997-07-01 1998-06-08 Protected lubricant reservoir for sealed bearing earth boring drill bit
CA002567355A Abandoned CA2567355A1 (en) 1997-07-01 1998-06-08 Protected lubricant reservoir for sealed bearing earth boring drill bit

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA002567355A Abandoned CA2567355A1 (en) 1997-07-01 1998-06-08 Protected lubricant reservoir for sealed bearing earth boring drill bit

Country Status (1)

Country Link
CA (2) CA2567415C (en)

Also Published As

Publication number Publication date
CA2567415C (en) 2008-12-23
CA2567355A1 (en) 1999-01-01

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20180608