公开(公告)号：US20250034948A1

公开(公告)日：2025-01-30

申请号：US18227753

申请日：2023-07-28

Applicant: Caterpillar Inc.

Inventor： Swetha Suresh ,  Ebi Bernard ,  Tamilmurasu Annadurai ,  Chetan Dahiwal

IPC: E21B10/22

Abstract: This disclosure describes, in part, systems and structures for a rotary cone drill bit having a body and rolling cone cutters, wherein the rolling cone cutters are coupled to the body through a bearing retention interface including ball bearings in a captured channel between the body and the rolling cone cutters. The ball bearings are inserted through an opening that is subsequently filled with a retainer pin having an engagement feature that ensures alignment of the retainer pin with respect to the captured channel and the ball bearings to reduce wear within the rotary cone drill bit.

公开(公告)号：US12297698B2

公开(公告)日：2025-05-13

申请号：US18227753

申请日：2023-07-28

Applicant: Caterpillar Inc.

Inventor： Swetha Suresh ,  Ebi Bernard ,  Tamilmurasu Annadurai ,  Chetan Dahiwal

IPC: E21B10/22 ,  E21B10/24 ,  E21B10/25

Abstract: This disclosure describes, in part, systems and structures for a rotary cone drill bit having a body and rolling cone cutters, wherein the rolling cone cutters are coupled to the body through a bearing retention interface including ball bearings in a captured channel between the body and the rolling cone cutters. The ball bearings are inserted through an opening that is subsequently filled with a retainer pin having an engagement feature that ensures alignment of the retainer pin with respect to the captured channel and the ball bearings to reduce wear within the rotary cone drill bit.