# US 10,245,706 B2 · Tool for fine machining of surfaces > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,245,706 B2 - Document ID: US10245706B2 - Status: Granted - Kind: B2 - Application number: 15/373,931 - Filed: 2016-12-09 - Published: 2017-06-15 - Granted: 2019-04-02 - Earliest claimed: 2015-12-09 - Assignees: Kolthoff Gabrovo EOOD - Applicants: Kolthoff Gabrovo EOOD - Inventors: Dieter Kolthoff - Web page: https://patentgrep.com/patent/US10245706B2 ## CPC - B24D 13/14: acting by the front face - B24D 13/142: {Wheels of special form} - B24D 13/145: {having a brush-like working surface} - B24D 13/20: Mountings for the wheels - B24D: TOOLS FOR GRINDING, BUFFING OR SHARPENING (abrading-bodies specially designed for tumbling apparatus, e.g. abrading-balls B24B31/14; honing tools B24B33/08; lapping tools B24B37/11) ## Abstract A tool for fine machining surfaces has a working medium carrier with a top face and a bottom face, wherein the bottom face is an attachment side. A set of individual exchangeable strip-shaped lamella holders are provided that each have one or more lamellas in individual or bundled arrangement. The lamellas each are oriented away from the attachment side of the working medium carrier and form in a downward direction remote from the attachment side a common working plane. The lamella holders on a side facing the attachment side are provided with first hooking members and the attachment side of working medium carrier is provided with second hooking members complementary to the first hooking members. The first and second hooking members are joined to each other in a direction perpendicular to the attachment side. ## Claims ### Claim 1 A tool for fine machining of surfaces, the tool comprising: a working medium carrier comprising a top face and a bottom face, wherein the bottom face is an attachment side; a set of individual exchangeable strip-shaped lamella holders, each comprising one or more lamellas in individual or bundled arrangement, wherein the lamellas each are oriented away from the attachment side of the working medium carrier and form in a downward direction remote from the attachment side a common working plane; wherein the lamella holders on a side facing the attachment side are provided with hooking elements and wherein the attachment side of the working medium carrier is provided with hooking receptacles that are complementary to the hooking elements; wherein the hooking elements are configured to be directly inserted into the hooking receptacles in a direction perpendicular to a downward face of the attachment side; wherein the hooking elements comprise first undercut faces and the hooking receptacles comprise second undercut faces complementary to the first undercut faces, wherein the lamella holders, after directly inserting the hooking elements into the hooking receptacles in the perpendicular direction, are moved parallel to the attachment side so that the first and second undercut faces engage each other and hook the hooking elements and the hooking receptacles relative to each other, wherein the lamella holders are locked at the working medium carrier solely by the hooking elements and the hooking receptacles. ### Claim 2 (depends on 1) The tool according to claim 1, wherein the hooking elements are embodied as projections and the hooking receptacles are embodied as downwardly facing holes in the attachment side of the working medium carrier. ### Claim 3 A tool for fine machining of surfaces, the tool comprising: a working medium carrier comprising a top face and a bottom face, wherein the bottom face is an attachment side; a set of individual exchangeable strip-shaped lamella holders, each comprising one or more lamellas in individual or bundled arrangement, wherein the lamellas each are oriented away from the attachment side of the working medium carrier and form in a downward direction remote from the attachment side a common working plane; wherein the lamella holders on a side facing the attachment side are provided with hooking elements and wherein the attachment side of the working medium carrier is provided with hooking receptacles that are complementary to the hooking elements; wherein the hooking elements are configured to be directly inserted into the hooking receptacles in a direction perpendicular to a downward face of the attachment side; wherein the hooking elements are configured to elastically yield to move into a mutual locked connection at the hooking receptacles, or the hooking receptacles are configured to elastically yield to move into a mutual locked connection at the hooking elements, wherein the lamella holders are locked at the working medium carrier solely by said mutual locked connection. ### Claim 4 A tool for fine machining of surfaces, the tool comprising: a working medium carrier comprising a top face and a bottom face, wherein the bottom face is an attachment side; a set of individual exchangeable strip-shaped lamella holders, each comprising one or more lamellas in individual or bundled arrangement, wherein the lamellas each are oriented away from the attachment side of the working medium carrier and form in a downward direction remote from the attachment side a common working plane; wherein the lamella holders on a side facing the attachment side are provided with first hooking members and wherein the attachment side of the working medium carrier is provided with second hooking members complementary to the first hooking members; wherein the first and second hooking members are configured to be joined to each other in a direction perpendicular to the attachment side; wherein the first hooking members or the second hooking members are configured to yield for moving into a mutual locked connection; wherein the first hooking members are yielding projections provided with undercut faces and the second hooking members are openings provided in the attachment side of the working medium carrier, wherein the yielding projections are configured to be inserted with elastic deformation into the openings and the undercut faces of the projections lock at the openings after having passed through the openings. ### Claim 5 (depends on 4) The tool according to claim 4, wherein the projections have a divided cross-section and comprise at least two spaced-apart segments. ### Claim 6 (depends on 5) The tool according to claim 5, wherein the lamella holders each are comprised of a first strip and a second strip and the one or more lamellas are secured between the first and second strips, wherein the first one of the at least two spaced-apart segments is formed on the first strip and the second one of the at least two spaced-apart segments is formed on the second strip. ### Claim 7 (depends on 6) The tool according to claim 6, wherein the first and second strips are connected to each other by locking elements. ### Claim 8 (depends on 1) The tool according to claim 1, wherein the working medium carrier comprises a plate and the plate is provided with openings forming the hooking receptacles. ### Claim 9 (depends on 8) The tool according to claim 8, further comprising a cover that closes off the plate at a top face thereof, wherein the working medium carrier comprises locking receptacles that lock the cover on the working medium carrier. ### Claim 10 (depends on 1) The tool according to claim 1, wherein the working medium carrier comprises a drive connector configured to attach the tool to a m otoric drive. ### Claim 11 (depends on 1) The tool according to claim 1, wherein the lamella holders each have a topside contacting the attachment side of the working medium carrier when the hooking elements and the hooking receptacles are in a hooked engagement with each other.