公开(公告)号：US12006825B2

公开(公告)日：2024-06-11

申请号：US17198856

申请日：2021-03-11

Applicant: Kennametal Inc.

Inventor： Brandon J. Kenno

IPC: E21C35/197 ,  B28D1/18 ,  E21C35/19

CPC classification number: E21C35/197 ,  B28D1/188 ,  E21C35/19

Abstract: Cutting tools (14) and cutting tool assemblies (10) include a friction ring (79). The friction ring (79) is provided in (disposed/secured within) a retaining groove (32) of a shank (30) of the cutting tool (14). The friction ring (79) can be formed from a resilient material or materials (150). The friction ring (79) can be secured in the retaining groove (32) by a retainer ring (80). The cutting tools (14) can also include a shank (30) having an increased diameter to provide increased strength and allow for a heavier cutting portion (28) of the cutting tool (14). The cutting tools (14) and cutting tool assemblies (10) can also include a washer (100) fitted about the shank (30) and positioned adjacent to a back side (26) of the cutting portion (28) of the cutting tool (14) for stabilizing the cutting tool body (22) in relation to a cutting tool holder (12).

公开(公告)号：US11339656B1

公开(公告)日：2022-05-24

申请号：US16413080

申请日：2019-05-15

Applicant: The Sollami Company

Inventor： Phillip Sollami

IPC: E21C35/19 ,  E21C35/18 ,  E21C35/197

Abstract: An improved base block is disclosed for use mainly in road milling equipment, but also capable of use in trenching equipment and mining equipment. The base mounting portion is shortened in length from such prior art base blocks and has a reduced length device receiving portion extending therefrom that includes a bore therethrough. Rearwardly of the device receiving portion, the base mounting portion includes a reduced diameter semi-bore or curved wall capable of engaging a portion of the shank side wall of a standard length bit/holder shank. Additionally, an angled slot adjacent the rear of the device receiving bore increases access to the rear to aid removal of a bit/holder therefrom.

公开(公告)号：US11208887B2

公开(公告)日：2021-12-28

申请号：US16549665

申请日：2019-08-23

Applicant: Caterpillar Paving Products Inc.

Inventor： Nicholas B. Johnson ,  Kevin J. Magee

IPC: E21C35/19 ,  E02F9/28 ,  B25B27/02 ,  B28D1/18 ,  E21C35/18 ,  E21C35/197

Abstract: A tool holder insertion device includes a frame extending from a proximal end to a distal end, the frame including first and second longitudinal arms extending between the distal end and the proximal end. The frame also includes a distal transverse arm connected to respective distal ends of the first and second longitudinal arms, a proximal transverse arm opposite the distal transverse arm, and an internal space extending from the distal transverse arm, the internal space forming an insertion opening. The tool holder insertion device also includes a drive assembly fixed to the frame, the drive assembly including a pushing surface that is movable within the internal space toward the distal end of the frame.

公开(公告)号：US11092008B2

公开(公告)日：2021-08-17

申请号：US16701846

申请日：2019-12-03

Applicant: Ironhawk Industrial Distribution, LLC

Inventor： Ron Abramcyk

IPC: E21C35/19 ,  E21C35/197 ,  E01C23/12 ,  E01C23/088

Abstract: A grader bit comprising a tool end having a shank extending axially inward therefrom; the shank having a circular cross-section; wherein a first shoulder extends radially outward relative to the shank and is located axially inward of the tool end; a second shoulder extending radially outward relative to the shank is located axially inward of the first shoulder, wherein the first shoulder and second shoulder are separated from each other by a spacing; the shank including a boss at an axial inward end thereof, the boss defining a socket extending inward into the shank from the axial inward extremity of the shank, wherein a perimeter of the socket includes at least one facet against which a force is applied to cause rotation of the shank.

公开(公告)号：US20210170557A1

公开(公告)日：2021-06-10

申请号：US17128684

申请日：2020-12-21

Applicant: Wirtgen GmbH

Inventor： Christian Berning ,  Matthias Brück ,  Lothar Schwalbach ,  Cyrus Barimani

IPC: B25B27/02 ,  G07C5/08 ,  E21C35/19 ,  E21C35/18 ,  B25B27/04 ,  G07C5/00 ,  B25B23/14 ,  E01C23/088

Abstract: The invention relates to a tool for installing a bit on and/or deinstalling a bit from a bit holder system of a milling machine, in particular a road milling machine, having at least one initiator with which installation and/or deinstallation of a bit is initiated. Provision is made that the tool comprises a detection device having at least one counting device; and that the detection device is designed to detect a number of bits deinstalled using the tool and/or a number of bits installed using the tool. The invention also relates to a corresponding bit holder system and to a method for monitoring wear. With the tool and the bit holder system, additional information regarding bit changes that have been carried out is made available to a user.

公开(公告)号：US10954785B2

公开(公告)日：2021-03-23

申请号：US16570441

申请日：2019-09-13

Applicant: The Sollami Company

Inventor： Phillip Sollami

IPC: E21C35/19

Abstract: A bit assembly includes a base block and a bit holder having a forward body portion and a shank. The forward body portion includes an enlarged tire portion to deflect material and particles removed from the terra firma and protect the base block from damage. The base block includes a base and a shortened front end. The enlarged tire portion has dimensions that cover at least all of the shortened from end. The dimensions of the tire portion can also extend beyond the dimensions of the shortened front end.

公开(公告)号：US10822947B1

公开(公告)日：2020-11-03

申请号：US16552747

申请日：2019-08-27

Applicant: US Synthetic Corporation

Inventor： Edwin Sean Cox

IPC: B02C18/18 ,  E21C35/183 ,  E21C35/19 ,  E21C25/18

Abstract: Embodiments described herein relate to material-removal systems as well as cutting tools and cutting tool assemblies that may be used in the material-removal systems. More specifically, for example, the material-removal systems, and particularly the cutting tools, may engage and fail target material. In some instances, the material-removal systems may be used in mining operations.

公开(公告)号：US10787905B2

公开(公告)日：2020-09-29

申请号：US16153839

申请日：2018-10-08

Applicant: KAITO SUZHOU CONSTRUCTION MACHINERY CO.,LTD

Inventor： Xiang Miao ,  Pengcheng Qin

IPC: E21C35/18 ,  E21C35/19 ,  B23C5/26 ,  B23C5/22 ,  E01C23/088 ,  E21C35/193

Abstract: The present invention belongs to the technical field of milling machines, and mainly relates to a novel cutter holder and base system for a milling machine. The cutter holder and base system according to the present invention aims to solve the problems in the prior art that a cutter holder structure is unreasonable, the cutting force of a cutter cannot be well dispersed in the cutter holder and a base, so that the service lives of the cutter holder and the base are shortened. The base is provided with a hole-shaped inner area and two curved surface areas, where the two curved surface areas are disposed in a circumferential area of the hole-shaped inner area, the curved surface areas are arranged at an angle, and each curved surface area includes two curved surfaces. The cutter holder improves its own usage performance while a lighter weight is achieved.

公开(公告)号：US10738610B2

公开(公告)日：2020-08-11

申请号：US15816050

申请日：2017-11-17

Applicant: Betek GmbH & Co. KG

Inventor： Ulrich Kraemer ,  Heiko Friederichs

IPC: E21C35/18 ,  E21C35/19 ,  E21C35/193 ,  E21C35/197

Abstract: A round-shank pick having a pick head and a pick shank that includes a supporting element pierced along its longitudinal center axis by a mounting hole with an inside diameter for receiving the pick shank. A collar height, measured in the direction of the longitudinal center axis between an end, facing away from the seat surface, of the centering extension and the seat surface or between the end of the centering extension and an inner termination of a recess that is integrally formed in the supporting element in an indented manner with respect to the seat surface, is configured such that the ratio between the inside diameter of the mounting hole in the supporting element and the collar height is less than 8, and/or that the collar height is greater than an axial clearance of the pick mounted in a pick holder.

公开(公告)号：US10724369B2

公开(公告)日：2020-07-28

申请号：US14308528

申请日：2014-06-18

Applicant: ESCO Corporation

Inventor： Roberto de Jesus Torres Delgado ,  William Stephen Clapham

IPC: E21C35/18 ,  E21C35/19 ,  E21C35/187 ,  E21C35/183 ,  E21C35/193

Abstract: An improved pick and pick holder assembly for use in mineral winning and the like. The improved pick and pick holder increases the effective life of a tool and pick holder by minimizing the shifting of the pick within the pick holder. The movement of the pick is minimized by front and rear bearing surfaces that remain positively engaged with front and rear bearing surfaces of the pick holder for loads applied to the pick that are predominantly inward and predominantly rearward.