Invention Grant
- Patent Title: Earth-boring tools including retractable pads
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Application No.: US15978608Application Date: 2018-05-14
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Publication No.: US10731419B2Publication Date: 2020-08-04
- Inventor: Marcus Oesterberg
- Applicant: Baker Hughes, a GE company, LLC
- Applicant Address: US TX Houston
- Assignee: Baker Hughes, a GE company, LLC
- Current Assignee: Baker Hughes, a GE company, LLC
- Current Assignee Address: US TX Houston
- Agency: TraskBritt
- Main IPC: E21B10/42
- IPC: E21B10/42 ; E21B7/06 ; E21B10/62 ; E21B10/60 ; E21B10/32 ; E21B7/04

Abstract:
An earth-boring tool may comprise at least one cavity formed in a face thereof. At least one retractable pad residing in the at least one cavity may be coupled to a piston located at least partially within the at least one cavity. Additionally, a valve may be positioned within the earth-boring tool and configured to regulate flow of an incompressible fluid in contact with the piston through an opening of a reservoir. A cartridge may comprise a barrel wall defining a first bore, and a piston comprising at least one retractable pad positioned at least partially within the first bore. The barrel wall and the piston may define a first reservoir within the first bore, and a valve may be positioned and configured to regulate flow through an opening to the first reservoir. Related methods and devices are also disclosed.
Public/Granted literature
- US20180258705A1 EARTH-BORING TOOLS INCLUDING RETRACTABLE PADS Public/Granted day:2018-09-13
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