Patents by Inventor Martin Heldmann
Martin Heldmann 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: 11560949Abstract: Sealing element for producing an electrically conductive connection between a first machine element and a second machine element, comprising at least one disc-shaped conducting element and a support ring, the support ring comprising an axial flange and a radial flanged, the conducting element being formed from an electrically conductive foil, and the conducting element being secured at least in sections along the axial flange between the support ring and the second machine element.Type: GrantFiled: September 30, 2019Date of Patent: January 24, 2023Assignee: CARL FREUDENBERG KGInventors: Guenter Hintenlang, Martin Heldmann, Thomas Klenk, Jens Hofmann
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Patent number: 11448116Abstract: A multiport valve for controlling a fluid flow in a fluid circuit, such as a cooling fluid circuit of a motor vehicle, may include a valve housing having at least three fluid connections and a rotary slide for setting the fluid flow. The rotary slide includes at least two fluid channels and is configured to connect two respective fluid connections fluidly via one fluid channel dependent upon its rotary position in relation to its rotational axis. The at least three fluid connections and the at least two fluid channels overlap in relation to a crosswise direction oriented crosswise relative to the rotational axis.Type: GrantFiled: October 23, 2020Date of Patent: September 20, 2022Assignee: WOCO Industrietechnik GmbHInventors: Eberhard Geiβel, Torsten Hofmann, Martin Heldmann
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Patent number: 11131387Abstract: A sealing ring includes: a supporting element; and a lip seal having at least one first and one second lip seal section having sealing materials differing from one another. The first lip seal section at one end is connected to the supporting element, and at an other end has a free end on which the second lip seal section is arranged. The second lip seal section includes an elastomeric sealing material.Type: GrantFiled: November 19, 2018Date of Patent: September 28, 2021Assignee: CARL FREUDENBERG KGInventors: Martin Heldmann, Jens Hofmann, Guenter Hintenlang
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Patent number: 11073210Abstract: Sealing element for producing an electrically conductive connection between a first machine element and a second machine element, including at least one sealing disc and a support ring, the support ring comprising an axial flange and a radial flange, the sealing disc being formed from an electrically conductive non-woven fabric, and the sealing disc being secured at least in sections along the axial flange by means of a clamping connection between the support ring and the second machine element.Type: GrantFiled: September 30, 2019Date of Patent: July 27, 2021Assignee: Carl Freudenberg KGInventors: Guenter Hintenlang, François Colineau, Martin Heldmann, Frank Guder, Jens Hofmann
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Publication number: 20210123374Abstract: A multiport valve for controlling a fluid flow in a fluid circuit, such as a cooling fluid circuit of a motor vehicle, may include a valve housing having at least three fluid connections and a rotary slide for setting the fluid flow. The rotary slide includes at least two fluid channels and is configured to connect two respective fluid connections fluidly via one fluid channel dependent upon its rotary position in relation to its rotational axis. The at least three fluid connections and the at least two fluid channels overlap in relation to a crosswise direction oriented crosswise relative to the rotational axis.Type: ApplicationFiled: October 23, 2020Publication date: April 29, 2021Applicant: WOCO Industrietechnik GmbHInventors: Eberhard Geißel, Torsten Hofmann, Martin Heldmann
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Publication number: 20200103028Abstract: Sealing element for producing an electrically conductive connection between a first machine element and a second machine element, comprising at least one disc-shaped conducting element and a support ring, the support ring comprising an axial flange and a radial flange, the conducting element being formed from an electrically conductive foil, and the conducting element being secured at least in sections along the axial flange between the support ring and the second machine element.Type: ApplicationFiled: September 30, 2019Publication date: April 2, 2020Inventors: Guenter HINTENLANG, Martin HELDMANN, Thomas KLENK, Jens HOFMANN
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Publication number: 20200103029Abstract: Sealing element for producing an electrically conductive connection between a first machine element and a second machine element, including at least one sealing disc and a support ring, the support ring comprising an axial flange and a radial flange, the sealing disc being formed from an electrically conductive non-woven fabric, and the sealing disc being secured at least in sections along the axial flange by means of a clamping connection between the support ring and the second machine element.Type: ApplicationFiled: September 30, 2019Publication date: April 2, 2020Inventors: Guenter HINTENLANG, François Colineau, Martin Heldmann, Frank GUDER, Jens HOFMANN
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Publication number: 20190170255Abstract: A sealing ring includes: a supporting element; and a lip seal having at least one first and one second lip seal section having sealing materials differing from one another. The first lip seal section at one end is connected to the supporting element, and at an other end has a free end on which the second lip seal section is arranged. The second lip seal section includes an elastomeric sealing material.Type: ApplicationFiled: November 19, 2018Publication date: June 6, 2019Inventors: Martin Heldmann, Jens Hofmann, Guenter Hintenlang
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Patent number: 10029356Abstract: A mounting device for a sealing ring, having a transport/mounting protective sleeve for the sealing ring and a sleeve-shaped punch with which the transport/mounting protective sleeve is movable on both sides in axial direction and automatically removable, wherein the protective sleeve has an inner step, extending axially, and an outside diameter corresponding to the outside diameter of a machine element to be sealed, and an axial length substantially corresponding to the axial length of the sealing ring, wherein the inner step is bounded axially counter to mounting direction by at least one end-side stop for the sealing ring, which stop forms part of an outer step likewise extending in the axial direction, wherein the outer step has a first driver surface with which at least one latching-lug-shaped driver of the punch can be engaged for automatic removal of the protective sleeve when the punch moves counter to the mounting direction.Type: GrantFiled: November 9, 2015Date of Patent: July 24, 2018Assignee: Carl Freudenberg KGInventors: Francois Colineau, Guenter Hintenlang, Martin Heldmann, Horst Spiegelhalter
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Publication number: 20160151896Abstract: A mounting device for a sealing ring, having a transport/mounting protective sleeve for the sealing ring and a sleeve-shaped punch with which the transport/mounting protective sleeve is movable on both sides in axial direction and automatically removable, wherein the protective sleeve has an inner step, extending axially, and an outside diameter corresponding to the outside diameter of a machine element to be sealed, and an axial length substantially corresponding to the axial length of the sealing ring, wherein the inner step is bounded axially counter to mounting direction by at least one end-side stop for the sealing ring, which stop forms part of an outer step likewise extending in the axial direction, wherein the outer step has a first driver surface with which at least one latching-lug-shaped driver of the punch can be engaged for automatic removal of the protective sleeve when the punch moves counter to the mounting direction.Type: ApplicationFiled: November 9, 2015Publication date: June 2, 2016Inventors: Francois Colineau, Guenter Hintenlang, Martin Heldmann, Horst Spiegelhalter
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Patent number: 8910948Abstract: A mounting guard ring for a sealing ring with at least one sealing lip, surrounding a sleeve-shaped protective ring with a supporting surface for the sealing lip disposed at the outer periphery and a holding device shaped as a grip, the protective ring being provided in at least one peripheral region with a first predetermined breaking site and being capable of being severed along the first predetermined breaking site by pulling on the holding device, the protective ring being closed off in sealing manner by a disk-shaped lid.Type: GrantFiled: May 31, 2013Date of Patent: December 16, 2014Assignee: Carl Freudenberg KGInventors: Martin Heldmann, Gunter Hintenlang, Uwe Henrich
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Publication number: 20130256995Abstract: A mounting guard ring for a sealing ring with at least one sealing lip, surrounding a sleeve-shaped protective ring with a supporting surface for the sealing lip disposed at the outer periphery and a holding device shaped as a grip, the protective ring being provided in at least one peripheral region with a first predetermined breaking site and being capable of being severed along the first predetermined breaking site by pulling on the holding device, the protective ring being closed off in sealing manner by a disk-shaped lid.Type: ApplicationFiled: May 31, 2013Publication date: October 3, 2013Inventors: Martin HELDMANN, Gunter HINTENLANG, Uwe HENRICH
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Patent number: 8474828Abstract: A mounting guard ring for a sealing ring with at least one sealing lip, surrounding a sleeve-shaped protective ring with a supporting surface for the sealing lip disposed at the outer periphery and a holding device shaped as a grip, the protective ring being provided in at least one peripheral region with a first predetermined breaking site and being capable of being severed along the first predetermined breaking site by pulling on the holding device, the protective ring being closed off in sealing manner by a disk-shaped lid.Type: GrantFiled: May 25, 2012Date of Patent: July 2, 2013Assignee: Carl Freudenberg KGInventors: Martin Heldmann, Gunter Hintenlang, Uwe Henrich
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Patent number: 8292302Abstract: A mounting guard ring for a sealing ring with at least one sealing lip, surrounding a sleeve-shaped protective ring with a supporting surface for the sealing lip disposed at the outer periphery and a holding device shaped as a grip, the protective ring being provided in at least one peripheral region with a first predetermined breaking site and being capable of being severed along the first predetermined breaking site by pulling on the holding device, the protective ring being closed off in sealing manner by a disk-shaped lid.Type: GrantFiled: December 7, 2009Date of Patent: October 23, 2012Assignee: Carl Freudenberg KGInventors: Martin Heldmann, Gunter Hintenlang, Uwe Henrich
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Publication number: 20120228834Abstract: A mounting guard ring for a sealing ring with at least one sealing lip, surrounding a sleeve-shaped protective ring with a supporting surface for the sealing lip disposed at the outer periphery and a holding device shaped as a grip, the protective ring being provided in at least one peripheral region with a first predetermined breaking site and being capable of being severed along the first predetermined breaking site by pulling on the holding device, the protective ring being closed off in sealing manner by a disk-shaped lid.Type: ApplicationFiled: May 25, 2012Publication date: September 13, 2012Applicant: CARL FREUDENBERG KGInventors: Martin Heldmann, Gunter Hintenlang, Uwe Henrich
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Publication number: 20100084417Abstract: A mounting guard ring for a sealing ring with at least one sealing lip, surrounding a sleeve-shaped protective ring with a supporting surface for the sealing lip disposed at the outer periphery and a holding device shaped as a grip, the protective ring being provided in at least one peripheral region with a first predetermined breaking site and being capable of being severed along the first predetermined breaking site by pulling on the holding device, the protective ring being closed off in sealing manner by a disk-shaped lid.Type: ApplicationFiled: December 7, 2009Publication date: April 8, 2010Applicant: Carl Freudenberg KGInventors: Martin Heldmann, Gunter Hintenlang, Uwe Henrich
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Patent number: 7651102Abstract: A mounting guard ring for a sealing ring with at least one sealing lip, surrounding a sleeve-shaped protective ring with a supporting surface for the sealing lip disposed at the outer periphery and a holding device shaped as a grip, the protective ring being provided in at least one peripheral region with a first predetermined breaking site and being capable of being severed along the first predetermined breaking site by pulling on the holding device, the protective ring being closed off in sealing manner by a disk-shaped lid.Type: GrantFiled: October 15, 2004Date of Patent: January 26, 2010Assignee: Carl Freudenberg KGInventors: Martin Heldmann, Gunter Hintenlang, Uwe Henrich
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Patent number: 7284759Abstract: A mounting guard ring for a sealing ring with at least one sealing lip, surrounding a sleeve-shaped protective ring with a supporting surface for the sealing lip disposed at the outer periphery and a holding device shaped as a grip, the protective ring being provided in at least one peripheral region with a first predetermined breaking site and being capable of being severed along the first predetermined breaking site by pulling on the holding device, the protective ring being closed off in sealing manner by a disk-shaped lid.Type: GrantFiled: May 20, 2004Date of Patent: October 23, 2007Assignee: Carl Freudenberg KGInventors: Martin Heldmann, Gunter Hintenlang, Uwe Henrich
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Patent number: 7017913Abstract: An axial shaft seal disposed between a housing wall and a rotating shaft includes an outer ring insertable into the housing wall in a stationary and sealing manner and an inner ring connectable to the shaft in a non-twisting and sealing manner. The outer ring includes a sleeve having a polymer material extending radially inward and having a spring bellows form. A radially inward end portion of the sleeve has a first sealing surface. The inner ring includes a ring flange extending radially outward so as to provide a second sealing surface for axially mating the first sealing face.Type: GrantFiled: June 25, 2003Date of Patent: March 28, 2006Assignee: Carl Freudenberg KGInventors: Thomas Klenk, Eberhard Bock, Thomas Kramer, Werner Hufnagel, Martin Heldmann, Markus Clemens, Gilbert Pataille
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Publication number: 20050258181Abstract: A mounting guard ring for a sealing ring with at least one sealing lip, surrounding a sleeve-shaped protective ring with a supporting surface for the sealing lip disposed at the outer periphery and a holding device shaped as a grip, the protective ring being provided in at least one peripheral region with a first predetermined breaking site and being capable of being severed along the first predetermined breaking site by pulling on the holding device, the protective ring being closed off in sealing manner by a disk-shaped lid.Type: ApplicationFiled: October 15, 2004Publication date: November 24, 2005Inventors: Martin Heldmann, Gunter Hintenlang, Uwe Henrich