公开(公告)号：US20230304400A1

公开(公告)日：2023-09-28

申请号：US17704952

申请日：2022-03-25

Applicant: Kennametal Inc.

Inventor： Thomas J. Long, II ,  James R. Geyer ,  Carlonda R. Reilly

IPC: E21C35/197 ,  E21C35/183

CPC classification number: E21C35/197 ,  E21C35/1831 ,  E21C35/1835

Abstract: The present invention provides a rotatable cutting tool with a bit, a washer, and a retainer. The retainer surrounds at least a portion of the shank of the bit. Wear on the shank is reduced by providing a retainer with a controlled hardness that is less than the hardness of the shank of the bit, while still allowing similar wear on the retainer.

公开(公告)号：US11952896B2

公开(公告)日：2024-04-09

申请号：US17250934

申请日：2019-09-27

Applicant: Schlumberger Technology Corporation

Inventor： Yahua Bao ,  J. Daniel Belnap ,  Francis E. Leany ,  Ronald B. Crockett ,  Dwain Norris ,  Anatoliy Garan

IPC: E21C35/183 ,  E01C23/088 ,  E01C23/12 ,  B28D1/18

CPC classification number: E21C35/1831 ,  E01C23/088 ,  E01C23/127 ,  E21C35/1833 ,  E21C35/1835 ,  B28D1/188 ,  E21C35/1837

Abstract: A tool for removing material includes a body, an ultrahard insert, and a matrix. The body has a forward portion, an opposing rear portion, and a longitudinal axis therebetween. The ultrahard insert includes an ultrahard material, and the ultrahard insert is mounted to and contacts the body proximate the forward portion. The matrix contacts the body and the ultrahard insert. The matrix is mechanically interlocked with the body and at least a portion of the matrix is positioned circumferentially around at least a portion of the forward portion of the body.

公开(公告)号：US11921130B2

公开(公告)日：2024-03-05

申请号：US17146288

申请日：2021-01-11

Applicant: University of Warwick

Inventor： Patrick Unwin ,  Kim Martin McKelvey

IPC: G01Q60/60 ,  B22D19/14 ,  C23C26/02 ,  E21C35/183

CPC classification number: G01Q60/60 ,  B22D19/14 ,  C23C26/02 ,  E21C35/183 ,  E21C35/1831 ,  E21C35/1833 ,  E21C35/1835 ,  Y10T428/12937 ,  Y10T428/12965

Abstract: A new scanning electrochemical microscopy tip positioning method that allows topography and surface activity to be resolved independently is presented. A SECM tip is oscillated relative to the surface of interest. Changes in the oscillation amplitude, caused by the intermittent contact of the SECM tip with the surface of interest, are used to detect the surface of interest, and as a feedback signal for various types of imaging.

公开(公告)号：US20230151733A1

公开(公告)日：2023-05-18

申请号：US17995535

申请日：2021-04-06

Applicant: Element Six (UK) Limited

Inventor： Shuo Lu

IPC: E21C35/183 ,  E21C25/18

CPC classification number: E21C35/1835 ,  E21C25/18 ,  E21C35/1831 ,  E02F5/08

Abstract: This disclosure relates to a disk cutter (100) for a cutting assembly of a rock excavation machine. The disk cutter comprising a cutter body (102) including at least one light-weighting aperture (110).