Patents by Inventor Markus Roth
Markus Roth 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).
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Patent number: 9719348Abstract: The invention relates to a bit holder for an earth working machine, in particular a road milling machine, having a support member onto which an insertion projection is indirectly or directly attached on an insertion projection side, the support member comprising two first and/or two second stripping surfaces that are at an angle to one another, and the support member having a working side that comprises a bit receptacle. In order to achieve a stable and long-lived configuration for such a bit holder, provision is made according to the present invention that the first and/or second stripping surfaces diverge from the insertion projection side toward the working side.Type: GrantFiled: September 24, 2015Date of Patent: August 1, 2017Assignee: Wirtgen GmbHInventors: Thomas Lehnert, Karsten Buhr, Cyrus Barimani, Günter Hähn, Karl Kammerer, Markus Roth, Bernhard Diessner
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Publication number: 20170183910Abstract: A fall arrester is provided and includes a pawl and connecting element that are configured such that the pawl and connecting element rotate in a common direction to move the pawl to an engaging position in response to a first predetermined force applied to the connecting element in a first direction, and to allow the pawl to rotate away from the connecting element as the pawl moves to the engaging position in response to a second predetermined force applied to the connecting element in a second direction that is different than the first direction.Type: ApplicationFiled: May 14, 2015Publication date: June 29, 2017Inventor: Markus Roth
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Publication number: 20170074098Abstract: The present invention relates to a shank chisel with a chisel head and a chisel shank, wherein the chisel shank has a securing element receptacle in which a securing element is arranged. In order to be able to make simple installation of the shank chisel in a chisel holder possible in a safe and maintenance-optimized manner of operation, it is provided according to the invention that a clamping element is adjustable relative to the chisel shank in such a manner that at least one part of the outer contour of the securing element is changed. The invention furthermore relates to a corresponding fixing assembly for a shank chisel in a chisel holder.Type: ApplicationFiled: November 8, 2016Publication date: March 16, 2017Applicant: Betek GmbH & Co. KGInventor: Markus ROTH
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Publication number: 20170008005Abstract: The present invention relates to a counter-blade, in particular, for a wood chipper, for producing wood chips, comprising at least one cutting edge made of a hard material, and a support surface leading to the cutting edge. According to the present invention, the cutting edge is made up of a plurality of hard material elements that are arranged next to one another along the cutting edge on a main member. This results in a counter-blade having a long service life.Type: ApplicationFiled: September 22, 2016Publication date: January 12, 2017Applicant: Betek GmbH & Co. KGInventors: Markus ROTH, Claus-Daniel ARMBRUSTER
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Publication number: 20160230551Abstract: The invention relates to a chisel (10) having a chisel head (11) and a chisel shaft (17), wherein near its end facing away from the chisel head the chisel shaft has a threaded portion having a thread (19), wherein the chisel head holds a chisel tip (20) made of a hard material, and wherein near the side facing the chisel shaft the chisel head is provided with a supporting surface (15). Especially when superhard hard materials are used for the chisel tip, a load-optimized chisel design is obtained by a domed supporting surface (15).Type: ApplicationFiled: September 1, 2014Publication date: August 11, 2016Inventors: Thomas Lehnert, Karsten Buhr, Cyrus Barimani, Günter Hähn, Heiko Friederichs, Karl Kammerer, Markus Roth
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Publication number: 20160229084Abstract: The invention concerns a tool holder (40) for a ground-working machine, in particular a road groover with a base part (41) comprising a tool-receiving part (45), the tool-receiving part having a tool-insertion region, and the tool-receiving part merging directly or indirectly into a mounting receiver (47) for receiving a nut (30) or the like. According to the invention, in order to be able to perform simplified maintenance with a tool holder of this type, the mounting receiver has mounting surfaces (47.1) for securing the nut peripherally.Type: ApplicationFiled: September 1, 2014Publication date: August 11, 2016Inventors: Thomas Lehnert, Karsten Buhr, Cyrus Barimani, Günter Hähn, Heiko Friederichs, Karl Kammerer, Markus Roth
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Patent number: 9399914Abstract: The invention relates to a bit holder for a road milling machine or the like, having a base part on which a bit shank and a projection are shaped, the projection comprising a bit receptacle, and the bit receptacle being constituted from a socket-shaped insert made of hard material. With a bit holder of this kind, good rotational behavior of the bit can be assisted and stable bracing thereof can be guaranteed, with little parts outlay, if provision is made that the bit receptacle is embodied as a stepped bore that comprises a first and a second diameter region, the first diameter region having a larger inside diameter than the second diameter region.Type: GrantFiled: October 11, 2012Date of Patent: July 26, 2016Assignee: Wirtgen GmbHInventors: Markus Roth, Thomas Allgaier, Thomas Lehnert
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Publication number: 20160208606Abstract: 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.Type: ApplicationFiled: January 27, 2016Publication date: July 21, 2016Inventors: Thomas Lehnert, Karsten Buhr, Cyrus Barimani, Günter Hähn, Karl Kammerer, Markus Roth, Bernhard Diessner
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Publication number: 20160186676Abstract: The present disclosure provides a method for adjusting the operation of an internal combustion engine comprising: determining a gradient of an overrun-air line based on an ambient condition and a current operating point; determining a value for a cylinder air mass situated in a cylinder after closure of the gas exchange valves; and using the determined cylinder air mass to adjust one or more operating parameters of the internal combustion engine. The overrun-air line may correspond to an air mass situated in the respective cylinder after closure of the gas exchange valves at predefined operating temperature for the engine, when the engine is operated briefly without fuel metering and combustion. Determining a cylinder air mass may be based at least in part on the current operating point and the current ambient value of the at least one ambient variable.Type: ApplicationFiled: August 13, 2014Publication date: June 30, 2016Applicant: Continental Automotive GmbHInventors: Thomas Burkhardt, Markus Roth, Joerg Mickeleit
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Patent number: 9376911Abstract: A chisel holder comprises a body zone (12) having a chisel receiving opening (18) that is open at least in the direction of a chisel insertion end (14) of the body zone (12), and also comprises a fastening shaft (26) which extends from a supporting end (20) of the body zone (12) and has a longitudinal shaft axis (LB), the body zone (12) having a first supporting surface region (22) at its supporting end (20). Said chisel holder is characterized in that the body zone (12) has a second supporting surface region (24) at its supporting end (20), said second surface region (24) extending at an angle from the first supporting surface region (22), or/and the first supporting surface region (22) comprises a first supporting surface (28) and a second supporting surface (30) extending at an angle from the first supporting surface (28).Type: GrantFiled: December 2, 2011Date of Patent: June 28, 2016Assignee: WIRTGEN GMBHInventors: Thomas Lehnert, Karsten Buhr, Cyrus Barimani, Günter Hähn, Karl Kammerer, Bernhard Diesner, Markus Roth
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Publication number: 20160177717Abstract: The subject matter of the invention is a bit holder for an earth working machine, in particular a road milling machine, having a support member onto which an insertion projection is indirectly or directly attached on an insertion projection side, the insertion projection comprising at least one convex abutment surface and one pressure surface. In a bit holder of this kind, working forces can be dissipated in stress-optimized fashion into an attached base part when provision is made that the insertion projection comprises two convex abutment surfaces that are arranged at a distance from one another.Type: ApplicationFiled: December 21, 2015Publication date: June 23, 2016Inventors: Thomas Lehnert, Karsten Buhr, Martin Lenz, Cyrus Barimani, Günter Hähn, Karl Kammerer, Markus Roth, Bernhard Diessner
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Publication number: 20160076370Abstract: The invention relates to a bit holder for an earth working machine, in particular a road milling machine, having a support member onto which an insertion projection is indirectly or directly attached on an insertion projection side, the support member comprising two first and/or two second stripping surfaces that are at an angle to one another, and the support member having a working side that comprises a bit receptacle. In order to achieve a stable and long-lived configuration for such a bit holder, provision is made according to the present invention that the first and/or second stripping surfaces diverge from the insertion projection side toward the working side.Type: ApplicationFiled: September 24, 2015Publication date: March 17, 2016Inventors: Thomas Lehnert, Karsten Buhr, Cyrus Barimani, Günter Hähn, Karl Kammerer, Markus Roth, Bernhard Diessner
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Publication number: 20160059055Abstract: Apparatus and associated methods relate to fall-protection safety connector having alignment indicators located on both a static end and a dynamic end of a deformable energy-absorbing device that when deformed visually presents the alignment indicators as misaligned. In an illustrative embodiment, the fall-protection safety connector may be configured to securely connect to a securement member. In some embodiments, a user may connect to the fall-protection safety connector by attaching a lanyard to an aperture coupled to the dynamic end of the deformable energy-absorbing device. Before using the fall-protection safety connector, the user may visually inspect the alignment of the alignment indicators to ascertain the readiness of the connector. Misaligned alignment indicators may advantageously indicate to the user that the remaining energy-absorbing deformation capability of the connector may be below a predetermined specification.Type: ApplicationFiled: July 30, 2015Publication date: March 3, 2016Inventors: Markus ROTH, Konrad Soergel, Katrin Wunderlich, Klaus Baumgartner
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Patent number: 9267373Abstract: The invention relates to a bit holder having an insertion projection and having a bore-shaped bit receptacle that has a longitudinal center axis, a convexly curved support surface being provided on a base part. A bit holder of this kind can be implemented in compact and stable fashion in particular by the fact that the longitudinal center axis of the bit receptacle intersects the support surface.Type: GrantFiled: December 2, 2011Date of Patent: February 23, 2016Assignee: Wirtgen GmbHInventors: Karl Kammerer, Markus Roth, Bernhard Diessner, Thomas Lehnert, Karsten Buhr, Martin Lenz, Cyrus Barimani, Günter Hähn
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Patent number: 9260965Abstract: 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.Type: GrantFiled: June 28, 2012Date of Patent: February 16, 2016Assignee: Wirtgen GmbHInventors: Thomas Lehnert, Karsten Buhr, Cyrus Barimani, Günter Hähn, Karl Kammerer, Markus Roth, Bernhard Diessner
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Patent number: 9228434Abstract: The subject matter of the invention is a bit holder for an earth working machine, in particular a road milling machine, having a support member onto which an insertion projection is indirectly or directly attached on an insertion projection side, the insertion projection comprising at least one convex abutment surface and one pressure surface. In a bit holder of this kind, working forces can be dissipated in stress-optimized fashion into an attached base part when provision is made that the insertion projection comprises two convex abutment surfaces that are arranged at a distance from one another.Type: GrantFiled: December 2, 2011Date of Patent: January 5, 2016Assignee: Wirtgen GmbHInventors: Thomas Lehnert, Karsten Buhr, Martin Lenz, Cyrus Barimani, Günter Hähn, Karl Kammerer, Markus Roth, Bernhard Diessner
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Patent number: 9222354Abstract: The invention relates to a tool system having a bit holder and a shank bit, the bit holder comprising a bit receptacle that comprises a first and a second diameter region that lead into one another via a transitional segment (taper), a bit shank of the shank bit comprising a first and a second cross-sectional region that lead into one another via a transitional segment. With a tool system of this kind, a wear-optimized design results from the fact that the transitional segments of the shank bit and of the bit holder are arranged spaced away from one another in the direction of the longitudinal center axis of the shank bit, in order to form a resetting space.Type: GrantFiled: October 11, 2012Date of Patent: December 29, 2015Assignee: Wirtgen GmbHInventors: Thomas Allgaier, Thomas Lehnert, Markus Roth
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Publication number: 20150345291Abstract: The invention relates to a bit holder for a road milling machine or the like, having a base part on which a bit shank and a projection are shaped, the projection comprising a bit receptacle, and the bit receptacle being constituted from a socket-shaped insert made of hard material. With a bit holder of this kind, good rotational behavior of the bit can be assisted and stable bracing thereof can be guaranteed, with little parts outlay, if provision is made that the bit receptacle is embodied as a stepped bore that comprises a first and a second diameter region, the first diameter region having a larger inside diameter than the second diameter region.Type: ApplicationFiled: October 11, 2012Publication date: December 3, 2015Applicants: Betek GmbH & Co. KG, Wirtgen GmbHInventors: Markus Roth, Thomas Allgaier, Thomas Lehnert
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Patent number: 9163502Abstract: A chisel holder comprises a body zone (12) having a chisel receiving opening (18) that is open at least in the direction of a chisel insertion end (14) of the body zone (12), and also comprises a fastening shaft (26) which extends from a supporting end (20) of the body zone (12) and has a longitudinal shaft axis. A fastening member-affecting zone is provided on a first side of the fastening shaft (26), and a supporting zone (78) that has supporting surface regions (88, 90) which are inclined relative to each other and adjoin each other in a transition zone (92) extending in the direction of the longitudinal shaft axis is provided on a second side of the fastening shaft (26), said second side lying opposite the first side relative to the longitudinal shaft axis.Type: GrantFiled: December 2, 2011Date of Patent: October 20, 2015Assignee: WIRTGEN GMBHInventors: Thomas Lehnert, Karsten Buhr, Martin Lenz, Cyrus Barimani, Günter Hähn, Karl Kammerer, Bernhard Diesner, Markus Roth
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Patent number: 9151157Abstract: The invention relates to a bit holder for an earth working machine, in particular a road milling machine, having a support member onto which an insertion projection is indirectly or directly attached on an insertion projection side, the support member comprising two first and/or two second stripping surfaces that are at an angle to one another, and the support member having a working side that comprises a bit receptacle. In order to achieve a stable and long-lived configuration for such a bit holder, provision is made according to the present invention that the first and/or second stripping surfaces diverge from the insertion projection side toward the working side.Type: GrantFiled: December 2, 2011Date of Patent: October 6, 2015Assignee: Wirtgen GmbHInventors: Thomas Lehnert, Karsten Buhr, Cyrus Barimani, Günter Hähn, Karl Kammerer, Markus Roth, Bernhard Diessner