Patents by Inventor Bernfried Hesselmann

Bernfried Hesselmann 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: 10059163
    Abstract: A leaf spring for a wheel suspension of a motor vehicle, comprises a first spring part made from a fiber reinforced plastic material and a second spring part made from a steel material. The first spring part and the second spring part are connected to each other. The ratio of the length of the first spring part to the length of the second spring part is larger than two. A leaf spring assembly can include such a leaf spring and receiving devices.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: August 28, 2018
    Assignee: Muhr und Bender KG
    Inventors: Jochen Asbeck, Sascha Picur, Bernfried Hesselmann
  • Publication number: 20170174029
    Abstract: A leaf spring for a wheel suspension of a motor vehicle, comprises a first spring part made from a fibre reinforced plastic material and a second spring part made from a steel material. The first spring part and the second spring part are connected to each other. The ratio of the length of the first spring part to the length of the second spring part is larger than two. A leaf spring assembly can include such a leaf spring and receiving devices.
    Type: Application
    Filed: February 12, 2015
    Publication date: June 22, 2017
    Inventors: Jochen Asbeck, Sascha Picur, Bernfried Hesselmann
  • Patent number: 9003850
    Abstract: A process for producing plate springs or undulating springs wherein surface regions which are subjected to tensile stresses when the spring is under load are provided with an internal compressive stress in the boundary layer, wherein said surface regions are rollingly compressed by a ball or roller or subjected to tensile stress and compressed by shot peening.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: April 14, 2015
    Assignee: Muhr und Bender KG
    Inventors: Bernfried Hesselmann, Sven Roth, Peter Buchner, Andreas Rinsdorf, Thomas Muhr
  • Patent number: 7793857
    Abstract: The invention relates to fixing means for fixing railway lines to sleepers or stretches of track, comprising an elastic rail clip (51) and a clip anchor element (31). According to the invention, the elastic rail clip (51) has retaining elements that can be inserted into the clip anchor element (31) and guided into the latter by being rotated about a rotational axis (D) and at least one pressure bow (52), which can be brought into pre-tensioned contact with the foot (24) of a railway line (21), when the elastic rail clip is rotated (51) about the rotational axis (D) in relation to the clip anchor element (31). The elastic rail clip (51) has essentially annular clip bows (55, 56) that act as the retaining elements and the clip anchor element (31) has guide elements (34) that are concentric with the rotational axis (D).
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: September 14, 2010
    Assignee: DB Netz AG
    Inventors: Karsten Westerhoff, Jörg Brecht, Erik Danneberg, Andreas Rinsdorf, Bernfried Hesselmann, Vladimir Kobelev, Michael Stahl
  • Publication number: 20090152369
    Abstract: The invention relates to fixing means for fixing railway lines to sleepers or stretches of track, comprising an elastic rail clip (51) and a clip anchor element (31). According to the invention, the elastic rail clip (51) has retaining elements that can be inserted into the clip anchor element (31) and guided into the latter by being rotated about a rotational axis (D) and at least one pressure bow (52), which can be brought into pre-tensioned contact with the foot (24) of a railway line (21), when the elastic rail clip is rotated (51) about the rotational axis (D) in relation to the clip anchor element (31). The elastic rail clip (51) has essentially annular clip bows (55, 56) that act as the retaining elements and the clip anchor element (31) has guide elements (34) that are concentric with the rotational axis (D).
    Type: Application
    Filed: November 7, 2006
    Publication date: June 18, 2009
    Inventors: Karsten Westerhoff, Jorg Brecht, Erik Danneberg, Andreas Rinsdorf, Bernfried Hesselmann, Vladimir Kobelev, Michael Stahl
  • Patent number: 7334784
    Abstract: Axial corrugated spring comprising an annular spring band 11 which describes a corrugation line oscillating about a radial reference plane around the circumference, wherein the corrugation line has maxima 12, 13, 17 of different height and minima 14, 15, 16 of different height.
    Type: Grant
    Filed: May 14, 2004
    Date of Patent: February 26, 2008
    Assignee: Muhr und Bender KG
    Inventors: Vladimir Kobelev, Bernfried Hesselmann, Andreas Rinsdorf
  • Publication number: 20080006351
    Abstract: A process for producing plate springs or undulating springs wherein surface regions which are subjected to tensile stresses when the spring is under load are provided with an internal compressive stress in the boundary layer, wherein said surface regions are rollingly compressed by a ball or roller or subjected to tensile stress and compressed by shot peening.
    Type: Application
    Filed: June 22, 2007
    Publication date: January 10, 2008
    Inventors: Bernfried Hesselmann, Sven Roth, Peter Buchner, Andreas Rinsdorf, Thomas Muhr
  • Publication number: 20070183867
    Abstract: An axially deformable spring washer bent so as to form a ring and joined at the circumference, wherein the spring washer is provided in the form of an undulating spring with a plurality of circumferentially formed peaks and troughs, or in the form of a plate spring with a conical shape and teeth at least one circumferential edge.
    Type: Application
    Filed: January 22, 2007
    Publication date: August 9, 2007
    Inventors: Bernfried Hesselmann, Ulrich Roth, Harold Brenner, Andreas Rinsdorf
  • Patent number: 7192015
    Abstract: A plate spring of a substantially circular-ring-shaped form having a substantially externally conical upper side (12) and a substantially internally conical underside (13) between which there are positioned an outer annular edge (14) and an inner annular edge (15), wherein, in the unloaded condition, the surface layer (17) of the underside (13) comprises a higher inherent compressive stress than the surface layer (16) of the upper side (12).
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: March 20, 2007
    Assignee: Muhr und Bender KG
    Inventors: Thomas Muhr, Bernfried Hesselmann, Andreas Rinsdorf, Volker Schütz, Harold Brenner
  • Publication number: 20050093216
    Abstract: Axial corrugated spring comprising an annular spring band 11 which describes a corrugation line oscillating about a radial reference plane around the circumference, wherein the corrugation line has maxima 12, 13, 17 of different height and minima 14, 15, 16 of different height.
    Type: Application
    Filed: May 14, 2004
    Publication date: May 5, 2005
    Inventors: Vladimir Kobelev, Bernfried Hesselmann, Andreas Rinsdorf
  • Publication number: 20050029721
    Abstract: A plate spring of a substantially circular-ring-shaped form having a substantially externally conical upper side (12) and a substantially internally conical underside (13) between which there are positioned an outer annular edge (14) and an inner annular edge (15), wherein, in the unloaded condition, the surface layer (17) of the underside (13) comprises a higher inherent compressive stress than the surface layer (16) of the upper side (12).
    Type: Application
    Filed: July 29, 2004
    Publication date: February 10, 2005
    Inventors: Thomas Muhr, Bernfried Hesselmann, Andreas Rinsdorf, Volker Schutz, Harold Brenner