公开(公告)号：US20240410278A1

公开(公告)日：2024-12-12

申请号：US18699900

申请日：2022-10-10

Applicant: ROCKFEEL GMBH

Inventor： Joerg Bretschneider ,  Taras Shepel ,  Serdar Yasar

IPC: E21C35/193 ,  E21C39/00

Abstract: A machine pick may include a pick tip, a shaft extending away from the pick tip along a longitudinal axis of the machine pick, and a reference element comprising at least one sensor-sensible scale having a magnetizable material. The reference element, the shaft, and the pick tip are rigidly connected to each other. The holding device may include a pick holder having an opening for receiving a machine pick, a locking device configured to form a form-fit with the machine pick received in the opening to limit movement of the machine pick, a receptacle area for receiving a portion of the machine pick where the receptacle area may be exposed to the opening, and at least one sensor. The sensor(s) may be disposed at the receptacle area and sense the portion extending into the receptacle area without contact, and/or the reference element is form-fittingly connected to the shaft.

公开(公告)号：US11725351B2

公开(公告)日：2023-08-15

申请号：US17723904

申请日：2022-04-19

Applicant: Wirtgen GmbH

Inventor： Christian Berning ,  Karsten Buhr ,  Markus Frankemölle ,  Thomas Lehnert ,  Andreas Salz ,  Hardy Wilhelmi

IPC: E01C23/088 ,  E01C23/12 ,  E21C47/00 ,  E21C35/193 ,  F16B19/02 ,  F16B37/14 ,  F16B39/02

CPC classification number: E01C23/088 ,  E01C23/127 ,  E21C35/193 ,  E21C47/00 ,  F16B19/02 ,  F16B37/14 ,  F16B39/02

Abstract: A bearing component for mounting a replaceable milling drum on an earth working machine includes an annular connecting flange having a central axis. A bearing stem protrudes from the connecting flange axially in a first direction to a first axial end, the bearing stem having an outer surface including at least first and second cylindrical bearing surfaces axially spaced from each other. The bearing stem further includes a centering recess open at a second axial end opposite the first axial end, the centering recess including an opening angle decreasing in steps so that the centering recess tapers in the first direction, the centering recess forming a portion of the central opening.

公开(公告)号：US20200378254A1

公开(公告)日：2020-12-03

申请号：US16943547

申请日：2020-07-30

Applicant: Betek GmbH & Co KG

Inventor： Ulrich Kraemer ,  Heiko Friederichs

IPC: E21C35/19 ,  E21C35/18 ,  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：US10801322B2

公开(公告)日：2020-10-13

申请号：US15749246

申请日：2016-07-11

Applicant: Betek GmbH & Co. KG ,  Wirtgen GmbH

Inventor： Thomas Allgaier ,  Ulrich Krämer ,  Heiko Friederichs ,  Thomas Lehnert ,  Karsten Buhr ,  Cyrus Barimani

IPC: E21C35/183 ,  E21C35/193

Abstract: The invention relates to a cutting device for an earth working machine, having improved wear protection.

公开(公告)号：US20190381694A1

公开(公告)日：2019-12-19

申请号：US16526387

申请日：2019-07-30

Applicant: US Synthetic Corporation

Inventor： David P. Miess ,  Michael James Gleason ,  Samuel Earl Wilding ,  Regan Leland Burton ,  Paul Douglas Jones

IPC: B28D1/18 ,  E01C23/088 ,  E01C23/12 ,  E21C35/183 ,  E21C35/193

Abstract: Embodiments of the invention are directed to cutting tool assemblies, material-removing machines that include cutting tool assemblies, and methods of use and operation thereof. In some embodiments, the cutting tool assemblies described herein may be used in material-removing machines that may remove target material. For example, the cutting tool assemblies may include one or more superhard working surfaces and/or one or more shields.

公开(公告)号：US10414069B2

公开(公告)日：2019-09-17

申请号：US14266437

申请日：2014-04-30

Applicant: US Synthetic Corporation

Inventor： David P. Miess ,  Michael James Gleason ,  Samuel Earl Wilding ,  Regan Leland Burton ,  Paul Douglas Jones

IPC: E01C23/088 ,  E01C23/12 ,  E21C35/183 ,  B28D1/18 ,  E21C35/193 ,  E21C35/18

Abstract: Embodiments of the invention are directed to cutting tool assemblies, material-removing machines that include cutting tool assemblies, and methods of use and operation thereof. In some embodiments, the cutting tool assemblies described herein may be used in material-removing machines that may remove target material. For example, the cutting tool assemblies may include one or more superhard working surfaces and/or one or more shields.

公开(公告)号：US10208593B2

公开(公告)日：2019-02-19

申请号：US15664137

申请日：2017-07-31

Applicant: Wirtgen GmbH

Inventor： Thomas Lehnert ,  Karsten Buhr ,  Cyrus Barimani ,  Günter Hähn ,  Karl Kammerer ,  Markus Roth ,  Bernhard Diessner

IPC: E21C35/19 ,  E21C35/193 ,  B28D1/18 ,  E21C35/18 ,  E01C23/088

Abstract: The invention relates to a bit holder for an earth working machine, in particular a road milling machine, that comprises a bit receptacle in the region of a working side of a support member and that indirectly or directly carries an insertion projection on an insertion projection side of the support member, the support member comprising two stripping surfaces [first or second stripping surfaces] that form a stripping surface pair and are at an angle to one another. In order to achieve a stable and long-lived configuration with such a bit holder, provision is made according to the present invention that the support member comprises at least one further stripping surface that is at an angle to the two stripping surfaces of the stripping surface pair.

公开(公告)号：US20180340301A1

公开(公告)日：2018-11-29

申请号：US15981035

申请日：2018-05-16

Applicant: Wirtgen GmbH

Inventor： Christian Berning ,  Karsten Buhr ,  Markus Frankemölle ,  Thomas Lehnert ,  Andreas Salz ,  Hardy Wilhelmi

IPC: E01C23/088 ,  E01C23/12 ,  E21C35/193

Abstract: An earth working machine encompasses a machine body having a machine frame and a drive configuration rotationally drivable relative to the machine frame around a drive axis (A). It further encompasses a working apparatus (32) for earth working to which the drive configuration is releasably connected in drive torque-transferring fashion for rotation together, the drive configuration projecting from an axial end axially into the working apparatus (32) and the working apparatus (32) being retained on the drive configuration, against axial displacement relative to the drive configuration, by an accessible central bolt arrangement having a bolt axis collinear with the drive axis (A). Provision is made according to the present invention that the earth working machine encompasses a bolting moment bracing arrangement (82) which is connected or connectable in bolting moment-transferring fashion to a bolt component, helically movable relative to the drive configuration, of the bolt arrangement, and which comprises a bracing region (82e, 82gf) that is embodied for bolting moment-bracing abutment in a bracing bolting direction against a counterpart bracing region (84b, 84c), the drive configuration being embodied to be driven to rotate, in a rotation direction codirectional with the bracing bolting direction, while the bracing region (82e, 82f) is in abutment against the counterpart bracing region (84b, 84c).

公开(公告)号：US20180223661A1

公开(公告)日：2018-08-09

申请号：US15749420

申请日：2016-07-29

Applicant: Joy MM Delaware, Inc. ,  Element Six (UK) Limited ,  Element Six GmbH

Inventor： Randy Arnold ,  James E. Folkerts ,  John R. Frederick ,  John Hallberg ,  James Krellner ,  David Meade ,  Bulent Tiryaki ,  Charles Simon James Pickles ,  Peter Robert Bush ,  Christopher John Howard Wort ,  Serena Bonetti ,  Bernd Heinrich Ries ,  Markus Kilian Scharting

IPC: E21C35/193 ,  B28D1/18 ,  E21C27/24

Abstract: A cutting bit assembly for a mining machine includes a holder having a first surface, a second surface, and a bore extending therebetween, and a bit having a first end and a second end. The bit further includes a tip, a shank, and a shoulder positioned between the tip and the shank. The shank is positioned in the bore of the holder and defines a shank axis. The shoulder engages the first surface of the holder. The shank includes a projection adjacent the second end. The cutting bit assembly also includes a retainer having a groove and a resilient member. The groove engages a portion of the projection. The resilient portion engages the second surface of the holder and biases the retainer along the shank axis and away from the holder.

公开(公告)号：US09890635B2

公开(公告)日：2018-02-13

申请号：US15196957

申请日：2016-06-29

Applicant: Winchester E. Latham

Inventor： Winchester E. Latham

IPC: E21C35/183 ,  E21C35/193 ,  E21C25/10 ,  B28D1/18

CPC classification number: E21C35/183 ,  B28D1/188 ,  E21C25/10 ,  E21C35/1936

Abstract: A cutter bit includes a wear resistant element replaceably mounted to a front surface immediately below the cutting surface of the cutter bit. The body of the cutter bit is generally formed of a hardened steel, the cutting surface can be a diamond composition fixed in a step in the upper end of the cutter bit including side edges that taper laterally outwardly toward a lower edge of the cutting surface situated adjacent to the wear resistant element and the wear resistant element is preferably formed of a carbide composition or a sintered diamond composition. The wear resistant element can have an upper edge that closely conforms to the shape of an adjacent lower edge of the cutting surface, and can be coupled to a front end of a stem passing through an opening in the cutter bit immediately below the cutting surface, the opening being perpendicular to at least a portion of the back surface of the cutter bit.