公开(公告)号：ZA200100323B

公开(公告)日：2001-07-26

申请号：ZA200100323

申请日：2001-01-11

Applicant: SMITH INTERNATIONAL

Inventor： SLAUGHTER ROBERT H JR ,  CARIVEAU PETER T ,  NORRIS KIRK A ,  DIDERICKSEN ROGER ,  CONN WILLIAM M

IPC: E21B20060101 ,  E21B10/22 ,  E21B10/24 ,  E21B

公开(公告)号：SE0000842D0

公开(公告)日：2000-03-14

申请号：SE0000842

申请日：2000-03-14

Applicant: SMITH INTERNATIONAL

Inventor： SLAUGHTER JR ROBERT H ,  CARIVEAU PETER T ,  NORRIS KIRK A ,  DIDERICKSEN ROGER ,  CONN WILLIAM M

IPC: E21B10/00 ,  E21B10/18 ,  E21B10/24

公开(公告)号：SE0000839L

公开(公告)日：2000-03-14

申请号：SE0000839

申请日：2000-03-14

Applicant: SMITH INTERNATIONAL

Inventor： SLAUGHTER JR ROBERT H ,  CARIVEAU PETER T ,  NORRIS KIRK A ,  DIDERICKSEN ROGER ,  CONN WILLIAM M

IPC: E21B10/00 ,  E21B10/18 ,  E21B10/24

公开(公告)号：SE0000839D0

公开(公告)日：2000-03-14

申请号：SE0000839

申请日：2000-03-14

Applicant: SMITH INTERNATIONAL

Inventor： SLAUGHTER JR ROBERT H ,  CARIVEAU PETER T ,  NORRIS KIRK A ,  DIDERICKSEN ROGER ,  CONN WILLIAM M

IPC: E21B10/00 ,  E21B10/18 ,  E21B10/24

公开(公告)号：SE0100090L

公开(公告)日：2001-07-19

申请号：SE0100090

申请日：2001-01-12

Applicant: SMITH INTERNATIONAL

Inventor： SLAUGHTER JR ROBERT H ,  CARIVEAU PETER T ,  NORRIS KIRK A ,  DIDERICKSEN ROGER ,  CONN WILLIAM M

IPC: E21B20060101 ,  E21B10/22 ,  E21B10/24

公开(公告)号：SE0000841L

公开(公告)日：2000-03-14

申请号：SE0000841

申请日：2000-03-14

Applicant: SMITH INTERNATIONAL

Inventor： SLAUGHTER JR ROBERT H ,  CARIVEAU PETER T ,  NORRIS KIRK A ,  DIDERICKSEN ROGER ,  CONN WILLIAM M

IPC: E21B10/00 ,  E21B10/18 ,  E21B10/24 ,  E21B10/22

公开(公告)号：SE0000840L

公开(公告)日：2000-03-14

申请号：SE0000840

申请日：2000-03-14

Applicant: SMITH INTERNATIONAL

Inventor： SLAUGHTER JR ROBERT H ,  CARIVEAU PETER T ,  NORRIS KIRK A ,  DIDERICKSEN ROGER ,  CONN WILLIAM M

IPC: E21B10/00 ,  E21B10/18 ,  E21B10/24

公开(公告)号：GB2326894A

公开(公告)日：1999-01-06

申请号：GB9813000

申请日：1998-06-16

Applicant: SMITH INTERNATIONAL

Inventor： SLAUGHTER JR ROBERT H ,  NORRIS KIRK A ,  CONN WILLIAM M ,  CARIVEAU PETER T ,  DIDERICKSEN ROGER

IPC: E21B10/00 ,  E21B10/18 ,  E21B10/24

公开(公告)号：SE9802318D0

公开(公告)日：1998-06-29

申请号：SE9802318

申请日：1998-06-29

Applicant: SMITH INTERNATIONAL

Inventor： SLAUGHTER JR ROBERT H ,  CARIVEAU PETER T ,  NORRIS KIRK A ,  DIDERICKSEN ROGER ,  CONN WILLIAM M

IPC: E21B10/00 ,  E21B10/18 ,  E21B10/24 ,  E21B

公开(公告)号：CA2240023C

公开(公告)日：2007-02-13

申请号：CA2240023

申请日：1998-06-08

Applicant: SMITH INTERNATIONAL

Inventor： CONN WILLIAM M ,  DIDERICKSEN ROGER ,  CARIVEAU PETER T ,  NORRIS KIRK A ,  SLAUGHTER ROBERT H JR

IPC: E21B10/22 ,  E21B10/00 ,  E21B10/08 ,  E21B10/18 ,  E21B10/24

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 flui d 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.