公开(公告)号：US10151148B2

公开(公告)日：2018-12-11

申请号：US14605639

申请日：2015-01-26

Applicant: Baker Hughes Incorporated

Inventor： David A. Curry ,  Terry J. Koltermann ,  Chih C. Lin ,  Stuart Hall

IPC: E21B10/25 ,  E21B10/22

Abstract: An earth boring bit has a bit body with a depending bearing pin, a cone rotatably mounted on the bearing pin, a seal gland between the cone and the bearing pin, and a seal assembly located in the seal gland. The seal assembly includes an annular metallic spring encircling the bearing pin. The spring has a geometric center line that extends in a circle around the bearing pin. The spring is elastically deformable in radial directions relative to the center line. An elastomeric layer is located on an exterior side of the spring and is biased by the spring against a surface of the seal gland.

公开(公告)号：US20150144406A1

公开(公告)日：2015-05-28

申请号：US14605639

申请日：2015-01-26

Applicant: Baker Hughes Incorporated

Inventor： David A. Curry ,  Terry J. Koltermann ,  Chih C. Lin ,  Stuart Hall

IPC: E21B10/25

CPC classification number: E21B10/25 ,  E21B2010/225

Abstract: An earth boring bit has a bit body with a depending bearing pin, a eons rotatably mounted on the hearing pin, a seal gland between the cone and the bearing pin, and a seal assembly located in the seal gland. The seal assembly includes an annular metallic spring encircling the bearing pin. The spring has a geometric center line that extends in a circle around the bearing pin. The spring is elastically deform able in radial directions relative to the center line. An elastomeric layer is located on an exterior side of the spring and is biased by the spring against a surface of the seal gland.

Abstract translation: 地镗头具有一个带有从动轴承销的一个主体，一个可旋转地安装在听力销上的eons，在锥体和轴承销之间的密封压盖，以及一个位于密封压盖中的密封组件。 密封组件包括环绕轴承销的环形金属弹簧。 弹簧具有围绕轴承销一圈的几何中心线。 弹簧相对于中心线在径向上弹性变形。 弹性体层位于弹簧的外侧，并被弹簧偏压在密封压盖的表面上。