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公开(公告)号：US20240234125A9
公开(公告)日：2024-07-11
申请号：US18546434
申请日：2022-02-04
Applicant: SILTRONIC AG
Inventor： Georg Pietsch , Joachim Junge
CPC classification number: H01L21/02019 , B24B7/228 , B24D7/06 , B28D5/045 , B28D7/02
Abstract: A method produces wafers from a cylindrical ingot of semiconductor material having an axis and an indexing notch in an outer surface of the cylindrical ingot and parallel to the axis. The method includes, in the order specified: (a) simultaneous removal of a multiplicity of sliced wafers from the cylindrical ingot by multi-wire slicing in the presence of a cutting agent; (b) etching of the sliced wafers with an alkaline etchant in an etching bath at a temperature of 20° C. to 50° C. and for a residence time, such that the material removed from each of the sliced wafers is less than 5/1000 of an initial wafer thickness; and (c) grinding of the etched wafers by simultaneous double-disk grinding using an annular abrasive covering.
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公开(公告)号：US20230226664A1
公开(公告)日：2023-07-20
申请号：US17998939
申请日：2021-05-17
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： John A. Worrell , Schoen A. Schuknecht , Michael J. Annen
CPC classification number: B24D7/063 , B24D11/001
Abstract: A composite abrasive article comprises an open mesh backing member having first and second major surfaces and coated abrasive members secured to the first major surface. Independently, each coated abrasive member respectively comprises an abrasive layer comprising abrasive particles secured to a coated abrasive backing by at least one binder material. A method of making a composite abrasive article is also disclosed.
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公开(公告)号：US20210016408A1
公开(公告)日：2021-01-21
申请号：US17062074
申请日：2020-10-02
Applicant: HUSQVARNA AB
Inventor： Besim Mesinovic , Oskar Pettersson
Abstract: A transmission arrangement (113) comprising a first axle (24) that is rotatable about a first axis (33) and is connected to a first pulley (25) that is arranged to drive an endless power transferring means (26) that further is adapted to drive a second pulley (27) that is rotatable about a second axis (34), where the transmission arrangement (113) comprises a first idle pulley (101) and a second idle pulley (102) which both are adapted to guide the endless power transferring means (26), where the first idle pulley (101) is rotatable around a first idle pulley axis (103) and the second idle pulley (102) is rotatable around a second idle pulley axis (104), where the distance between the idle pulley axes (103, 104) is fixed and where the idle pulley axes (103, 104) are pivotable around a common pivot axis (105), wherein the first pulley (25) is positioned between the idle pulleys (101, 102) and the second pulley (27) such that a distance between any one of the idle pulley axes (103, 104) and the second axis (34) exceeds a distance between any one of the idle pulley axes (103,104) and the first axis (33).
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公开(公告)号：US20200180111A1
公开(公告)日：2020-06-11
申请号：US16788274
申请日：2020-02-11
Applicant: Jinwei Lian
Inventor： Jinwei Lian
Abstract: The invention discloses a glass bottle mouth fine grinding device, which includes a working box and a working chamber located in the working box. A placing box is slidably arranged in the working chamber. The placing box is provided with a placing chamber. A glass bottle is slidably disposed in the placement cavity, and first cavities are symmetrically arranged on the left and right sides of the placement cavity. A circular clamping block is slidably disposed in the first cavity. The first cavity is connected by a first spring, and a second cavity is provided at the bottom of the placing box. A sliding block is slidably disposed in the second cavity, and the sliding block and the second cavity are connected by a second spring.
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公开(公告)号：US10667665B2
公开(公告)日：2020-06-02
申请号：US16274624
申请日：2019-02-13
Inventor： Tchavdar V. Tchakarov
IPC: B24B7/18 , B24B7/22 , B24D11/00 , B24D13/14 , A47L11/40 , B24D7/08 , B24D18/00 , B24B41/047 , A47L11/164 , B24D7/06
Abstract: A floor polishing or grinding pad assembly is provided. In one aspect, a polishing or grinding pad assembly employs a fibrous pad, a reinforcement layer or ring, and multiple floor-contacting disks. In another aspect, the reinforcement layer includes a central hole through which the fibrous pad is accessible and the fibrous pad at the hole has a linear dimension greater than a linear dimension of one side of the adjacent reinforcement layer. In yet another aspect, at least one of the floor-contacting disks has an angle offset from that of a base surface of the disk, the fibrous pad and/or the reinforcement layer. A further aspect employs a smaller set of disks alternating between and/or offset from a larger set of the disks. In another aspect, the reinforcement layer includes a wavy or undulating internal edge shape.
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Patent Agency Ranking
公开(公告)号：US10414012B2
公开(公告)日：2019-09-17
申请号：US15405361
申请日：2017-01-13
Inventor： Tchavdar V. Tchakarov
Abstract: A workpiece abrading pad apparatus is provided. In one aspect, a grinding pad apparatus employs a flexible pad, a flexible metallic reinforcement layer or ring, and multiple floor-grinding disks. In another aspect, a metallic reinforcement ring includes a central hole through which a fiber or foam pad is accessible. Another aspect employs a spring steel reinforcement ring to which multiple diamond-based abrasive disks or dots are attached. In yet another aspect, at least one floor-contacting disk attached to a reinforcement ring includes sintered powdered metal with diamond particles mixed therein. A further aspect employs abrasive, floor-contacting disks or dots including posts extending from backsides thereof for attachment to a reinforcing ring or layer.
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公开(公告)号：US10406648B2
公开(公告)日：2019-09-10
申请号：US15667266
申请日：2017-08-02
Applicant: NewGrind Inc.
Inventor： Owen Rogers
Abstract: An apparatus for abrading a surface is provided. The apparatus includes: a framework with a motor housed therein; a chassis housing a drivetrain, the drivetrain including a drive pulley operative connected to the motor, a plurality of tool assembly pulleys, a belt operatively connecting the drive pulley and the plurality of tool assembly pulleys; a plurality of tool assemblies operatively connected to the drive pulley and the plurality of tool assembly pulleys, each tool assembly including: a tool holder, a tool plate comprising a tool segment with an abrading surface, wherein the tool holder and tool plate are detachably connected by a plurality of equidistantly spaced pins, wherein the number of pins is a multiple of three.
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公开(公告)号：US20190030683A1
公开(公告)日：2019-01-31
申请号：US16078666
申请日：2017-02-21
Applicant: 3M INNOVATIVE PROPERTIES COMPANY
Inventor： Jean-Luc Rifaut , Jonathan Charlotteau
Abstract: A damped abrasive article comprises a damping body and an abrasive surface provided on at least a portion of the damping body. The damping body comprises a synthetic polymer having a Storage Modulus from 1000 MPa to 2500 MPa and a Loss factor from 0.025 to 0.10 at 25° C. and 10 Hz.
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公开(公告)号：US10086499B2
公开(公告)日：2018-10-02
申请号：US15060939
申请日：2016-03-04
Applicant: SAINT-GOBAIN ABRASIVES, INC. , SAINT-GOBAIN ABRASIFS
Inventor： Cecile O. Mejean , Srinivasan Ramanath , Ramanujam Vedantham , Kelley McNeal
IPC: B24D7/06
Abstract: An abrasive article includes a body having an annular surface including abrasive segments coupled to the annular surface, and the abrasive segments define an abrasive annular region and a percent abrasive surface area of not greater than 24% for the total surface area of the abrasive annular region.
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公开(公告)号：US09925645B2
公开(公告)日：2018-03-27
申请号：US14923433
申请日：2015-10-27
Applicant: EHWA DIAMOND INDUSTRIAL CO., LTD.
Inventor： Young-Choul Song , Sung-Hoon Chung , Jong-Suk Choi , Jae-Hyun Hong
Abstract: Disclosed herein is a grinding tool, which includes a plate, a plurality of holders formed on the plate and having sliding grooves, a shoe coupled to the sliding groove of each of the holders, and grinding tips arranged on the shoe. The shoe includes a fastening part fastened to the sliding groove, and an upper plate part formed on the fastening part and located on an upper surface of the holder outside the sliding groove. The shoe can be fastened to the holder in two or more directions, and the grinding tips can be arranged in two or more forms when viewed from the plane.
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