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).

  • Patent number: 11560949
    Abstract: 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: Grant
    Filed: September 30, 2019
    Date of Patent: January 24, 2023
    Assignee: CARL FREUDENBERG KG
    Inventors: Guenter Hintenlang, Martin Heldmann, Thomas Klenk, Jens Hofmann
  • Patent number: 11448116
    Abstract: 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: Grant
    Filed: October 23, 2020
    Date of Patent: September 20, 2022
    Assignee: WOCO Industrietechnik GmbH
    Inventors: Eberhard Geiβel, Torsten Hofmann, Martin Heldmann
  • Patent number: 11131387
    Abstract: 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: Grant
    Filed: November 19, 2018
    Date of Patent: September 28, 2021
    Assignee: CARL FREUDENBERG KG
    Inventors: Martin Heldmann, Jens Hofmann, Guenter Hintenlang
  • Patent number: 11073210
    Abstract: 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: Grant
    Filed: September 30, 2019
    Date of Patent: July 27, 2021
    Assignee: Carl Freudenberg KG
    Inventors: Guenter Hintenlang, François Colineau, Martin Heldmann, Frank Guder, Jens Hofmann
  • Publication number: 20210123374
    Abstract: 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: Application
    Filed: October 23, 2020
    Publication date: April 29, 2021
    Applicant: WOCO Industrietechnik GmbH
    Inventors: Eberhard Geißel, Torsten Hofmann, Martin Heldmann
  • Publication number: 20200103028
    Abstract: 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: Application
    Filed: September 30, 2019
    Publication date: April 2, 2020
    Inventors: Guenter HINTENLANG, Martin HELDMANN, Thomas KLENK, Jens HOFMANN
  • Publication number: 20200103029
    Abstract: 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: Application
    Filed: September 30, 2019
    Publication date: April 2, 2020
    Inventors: Guenter HINTENLANG, François Colineau, Martin Heldmann, Frank GUDER, Jens HOFMANN
  • Publication number: 20190170255
    Abstract: 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: Application
    Filed: November 19, 2018
    Publication date: June 6, 2019
    Inventors: Martin Heldmann, Jens Hofmann, Guenter Hintenlang
  • Patent number: 10029356
    Abstract: 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: Grant
    Filed: November 9, 2015
    Date of Patent: July 24, 2018
    Assignee: Carl Freudenberg KG
    Inventors: Francois Colineau, Guenter Hintenlang, Martin Heldmann, Horst Spiegelhalter
  • Publication number: 20160151896
    Abstract: 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: Application
    Filed: November 9, 2015
    Publication date: June 2, 2016
    Inventors: Francois Colineau, Guenter Hintenlang, Martin Heldmann, Horst Spiegelhalter
  • Patent number: 8910948
    Abstract: 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: Grant
    Filed: May 31, 2013
    Date of Patent: December 16, 2014
    Assignee: Carl Freudenberg KG
    Inventors: Martin Heldmann, Gunter Hintenlang, Uwe Henrich
  • Publication number: 20130256995
    Abstract: 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: Application
    Filed: May 31, 2013
    Publication date: October 3, 2013
    Inventors: Martin HELDMANN, Gunter HINTENLANG, Uwe HENRICH
  • Patent number: 8474828
    Abstract: 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: Grant
    Filed: May 25, 2012
    Date of Patent: July 2, 2013
    Assignee: Carl Freudenberg KG
    Inventors: Martin Heldmann, Gunter Hintenlang, Uwe Henrich
  • Patent number: 8292302
    Abstract: 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: Grant
    Filed: December 7, 2009
    Date of Patent: October 23, 2012
    Assignee: Carl Freudenberg KG
    Inventors: Martin Heldmann, Gunter Hintenlang, Uwe Henrich
  • Publication number: 20120228834
    Abstract: 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: Application
    Filed: May 25, 2012
    Publication date: September 13, 2012
    Applicant: CARL FREUDENBERG KG
    Inventors: Martin Heldmann, Gunter Hintenlang, Uwe Henrich
  • Publication number: 20100084417
    Abstract: 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: Application
    Filed: December 7, 2009
    Publication date: April 8, 2010
    Applicant: Carl Freudenberg KG
    Inventors: Martin Heldmann, Gunter Hintenlang, Uwe Henrich
  • Patent number: 7651102
    Abstract: 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: Grant
    Filed: October 15, 2004
    Date of Patent: January 26, 2010
    Assignee: Carl Freudenberg KG
    Inventors: Martin Heldmann, Gunter Hintenlang, Uwe Henrich
  • Patent number: 7284759
    Abstract: 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: Grant
    Filed: May 20, 2004
    Date of Patent: October 23, 2007
    Assignee: Carl Freudenberg KG
    Inventors: Martin Heldmann, Gunter Hintenlang, Uwe Henrich
  • Patent number: 7017913
    Abstract: 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: Grant
    Filed: June 25, 2003
    Date of Patent: March 28, 2006
    Assignee: Carl Freudenberg KG
    Inventors: Thomas Klenk, Eberhard Bock, Thomas Kramer, Werner Hufnagel, Martin Heldmann, Markus Clemens, Gilbert Pataille
  • Publication number: 20050258181
    Abstract: 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: Application
    Filed: October 15, 2004
    Publication date: November 24, 2005
    Inventors: Martin Heldmann, Gunter Hintenlang, Uwe Henrich