Title:
地層を掘削するためのアースボーリング要素及びパーカッション要素を含むハイブリッドビット
Document Type and Number:
Japanese Patent JP6920008
Kind Code:
B2
Abstract:
A hybrid bit includes an earth-boring element and a percussion element. The earth-boring element and the percussion element are coaxially arranged, with the earth-boring element surrounding the percussion element. A reciprocating member of the percussion element may oscillate in a manner that enables a bottom end of the reciprocating member to repeatedly protrude from a bottom end of the earth-boring element and to be repeatedly withdrawn. A configuration of the earth-boring element may enable it to drill into and remove some materials from an earth formation, while the percussion element may enable the hybrid bit to drill into and remove difficult-to-drill materials, including abrasive materials and/or materials with high compressive forces, such as chert.
Inventors:
Eve, Jonathan M.
Application Number:
JP2019570343A
Publication Date:
August 18, 2021
Filing Date:
March 07, 2018
Export Citation:
Assignee:
Eve, Jonathan M.
International Classes:
E21B6/04
Domestic Patent References:
| JP2007247199A |
Foreign References:
| US7240744 | ||||
| US2873093 | ||||
| US3130799 | ||||
| US4852672 | ||||
| US20080156536 | ||||
| US8499857 | ||||
| US20070114061 |
Attorney, Agent or Firm:
Wataru Kitakita