Patents by Inventor Dieter Kolthoff
Dieter Kolthoff has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20210394337Abstract: A support plate for a flexible tool that is to be rotated for surface fine machining by grinding or polishing has a plate body with a bottom side that is provided with a circumferentially extending circular contact surface for the flexible tool. A fixation device is arranged at the bottom side and detachably fixes the flexible tool to the contact surface. The plate body has a top side with a drive connector that is axially oriented in a direction of an axis of rotation of the support plate and frictionally connects the support plate to a drive. One or more fatigue markings are provided on or in the top side of the support plate.Type: ApplicationFiled: June 14, 2021Publication date: December 23, 2021Inventor: Dieter Kolthoff
-
Patent number: 10245706Abstract: 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.Type: GrantFiled: December 9, 2016Date of Patent: April 2, 2019Assignee: Kolthoff Gabrovo EOODInventor: Dieter Kolthoff
-
Publication number: 20170252900Abstract: A tool (1) for surface finish machining, having a cushion (6) made of an elastic plastics foam, on the underside of which there is formed a working medium face (2) having working media or adhesives (8, 11, 12, 13) for the releasable attachment of working medium discs and on the top side of which there is formed a drive receptacle (4, 5) for application of work, is created as a product that is producible easily and non-critically in high volume, is extremely robust in use, is moisture-resistant and is able to withstand high rotational speeds, in that the elastic plastics foam consists of closed-cell expanded and fused-together particles of a thermoplastic elastomer (TPE).Type: ApplicationFiled: August 18, 2015Publication date: September 7, 2017Inventor: Dieter KOLTHOFF
-
Publication number: 20170165811Abstract: 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.Type: ApplicationFiled: December 9, 2016Publication date: June 15, 2017Inventor: Dieter Kolthoff
-
Patent number: 9597776Abstract: A grinding disk is provided with a support plate with anchoring projections. A drive connector is connected to the support plate. An elastically deformable pad in the form of an injection molded part of un-foamed elastomeric thermoplastic synthetic material is provided and has a first face and an opposite second face. The pad has a chamber structure provided on the first face. The chamber structure has chambers laterally delimited by intermediate walls. The chambers have a top side that is open and is facing in a direction of the first side. The pad has a substantially closed support surface provided on the second face and facing away from the chamber structure. A working element is to be attached to the support surface. The support plate is connected to the first face of the pad to support the pad. The anchoring projections of the support plate are embedded within the pad.Type: GrantFiled: November 19, 2014Date of Patent: March 21, 2017Assignee: Kolthoff Gabrovo EOODInventor: Dieter Kolthoff
-
Patent number: 9358670Abstract: A surface fine machining tool has a working medium carrier with a bottom side and a top side. Grooves extend from the top side to the bottom side completely through the working medium carrier and have a narrowed portion at the bottom side but do not narrow upwardly toward the top side. The working medium carrier is an injection-molded plastic part. Lamellas with a holding rim and a lamella body are inserted with the holding rim in the grooves. The lamella body extends downward away from the holding rim, passes through the narrowed portion, and extends away from the bottom side. The lamellas are uniformly distributed about the bottom side. The grooves have an open end at a carrier rim of the working medium carrier. The open end has a cross-section matching the groove cross-section. A cover is connected to the top side and covers grooves and holding rims.Type: GrantFiled: January 30, 2015Date of Patent: June 7, 2016Assignee: Kolthoff Gabrovo EOODInventor: Dieter Kolthoff
-
Publication number: 20150209938Abstract: A surface fine machining tool has a working medium carrier with a bottom side and a top side. Grooves extend from the top side to the bottom side completely through the working medium carrier and have a narrowed portion at the bottom side but do not narrow upwardly toward the top side. The working medium carrier is an injection-molded plastic part. Lamellas with a holding rim and a lamella body are inserted with the holding rim in the grooves. The lamella body extends downward away from the holding rim, passes through the narrowed portion, and extends away from the bottom side. The lamellas are uniformly distributed about the bottom side. The grooves have an open end at a carrier rim of the working medium carrier. The open end has a cross-section matching the groove cross-section. A cover is connected to the top side and covers grooves and holding rims.Type: ApplicationFiled: January 30, 2015Publication date: July 30, 2015Inventor: Dieter Kolthoff
-
Patent number: 9039496Abstract: A grinding disk in particular for rotary fine machining of surfaces has a support plate and a drive connector connecting the grinding disk to a rotary drive machine. The drive connector is provided at a top side of the support plate. An elastically deformable cushion is disposed at a bottom side of the support plate. The cushion is covered with a working medium or with an adhesive coating for detachable attachment of a working medium disk. A cover is disposed on the support plate so as to define an axial intermediate spacing, wherein the cover is embodied as a mechanically loadable structural part and is connected fixedly at least to an outer rim of the support plate. Primarily radially extending ribs are disposed between the support plate and the cover and connected at least at some locations with the support plate and the cover.Type: GrantFiled: December 18, 2012Date of Patent: May 26, 2015Assignee: Kolthoff Gabrovo EOODInventor: Dieter Kolthoff
-
Publication number: 20150140910Abstract: A grinding disk is provided with a support plate with anchoring projections. A drive connector is connected to the support plate. An elastically deformable pad in the form of an injection molded part of un-foamed elastomeric thermoplastic synthetic material is provided and has a first face and an opposite second face. The pad has a chamber structure provided on the first face. The chamber structure has chambers laterally delimited by intermediate walls. The chambers have a top side that is open and is facing in a direction of the first side. The pad has a substantially closed support surface provided on the second face and facing away from the chamber structure. A working element is to be attached to the support surface. The support plate is connected to the first face of the pad to support the pad. The anchoring projections of the support plate are embedded within the pad.Type: ApplicationFiled: November 19, 2014Publication date: May 21, 2015Inventor: Dieter Kolthoff
-
Patent number: 6530828Abstract: Supporting plate for rotating tools for fine machining of surfaces, such as grinding or polishing with a front working surface or an adhering surface for detachably mounting a grinding, polishing, or similar working medium disk, having a rear driving connection and configured to provide for simple manipulation, advantageously priced adaptability and a rapid exchangeability. The supporting plate has an elastically deformable, exchangeability plate and an accommodating carrier. The exchangeable plate provides the working or adhering surface and has an interior space engaged from the rear by a coupling structure of the accommodating carrier with a bayonet or similar quick-change connection at an edge.Type: GrantFiled: April 10, 2000Date of Patent: March 11, 2003Assignee: Kolthoff & Co.Inventor: Dieter Kolthoff