Patents by Inventor Stefan Lienhard

Stefan Lienhard 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: 11913177
    Abstract: Rail fastening system (1) for fastening a rail (2) to a rail subsurface, preferably for a ballastless track, comprising a base plate (10), preferably made of a plastic, and at least one dowel (20), wherein the base plate (10) has at least one opening (15), which completely penetrates the base plate (10) in the thickness direction, and the dowel (20) is introduced into the opening (15), is held therein by means of a retaining contour and projects in the thickness direction at least on one side beyond the base plate (10).
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: February 27, 2024
    Assignee: SHIWIHAG AG
    Inventors: Stefan Lienhard, Frank Meyer
  • Patent number: 11306442
    Abstract: Rail fastening system for fastening at least one rail (2) to a rail substrate, preferably a solid travel path, which comprises: a rail support plate (1) arranged for holding the rail (2), wherein the rail (2) in the mounted state is in contact with the rail support plate and is fastened thereto by a rail mount (1a, 1b, 1c); a base plate (3) arranged for fastening the rail support plate (1) on the rail substrate, wherein the rail support plate (1) in the mounted state is fastened on the base plate (3) by way of one or more, preferably two, retaining elements (6) and the base plate (3) is in contact with the rail substrate; wherein the base plate (3) is of multi-part, preferably two-part, construction so that this is adjustable to different dimensions of the rail support plate (1).
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: April 19, 2022
    Assignee: SCHWIHAG AG
    Inventors: Tilman Rützel, Stefan Lienhard, Frank Meyer
  • Publication number: 20200378069
    Abstract: A rail fastening system for fastening a rail on a subsurface, preferably a ballastless track, comprises at least one retaining element for mounting the rail on the subsurface. The retaining element has an angle guide plate that, in the assembled state, is configured to divert transverse forces from the rail into the subsurface and a shoulder part that, in the assembled state, is configured to butt together with the angle guide plate and to lie in a recess of the subsurface in a positive-locking manner.
    Type: Application
    Filed: May 27, 2020
    Publication date: December 3, 2020
    Applicant: SCHWIHAG AG
    Inventors: Stefan Lienhard, Frank Meyer
  • Publication number: 20200332474
    Abstract: Rail fastening system (1) for fastening a rail (2) to a rail subsurface, preferably for a ballastless track, comprising a base plate (10), preferably made of a plastic, and at least one dowel (20), wherein the base plate (10) has at least one opening (15), which completely penetrates the base plate (10) in the thickness direction, and the dowel (20) is introduced into the opening (15), is held therein by means of a retaining contour and projects in the thickness direction at least on one side beyond the base plate (10).
    Type: Application
    Filed: January 8, 2019
    Publication date: October 22, 2020
    Applicant: SCHWIHAG AG
    Inventors: Stefan Lienhard, Frank Meyer
  • Patent number: 10704205
    Abstract: A holddown assembly fastens a railway rail to a transversely extending hollow sleeper formed with a vertically throughgoing hole. An upwardly projecting lateral brace element is provided on the sleeper offset from the hole, and the assembly has a body fitted between the rail and the brace element and transversely bracing the rail against the brace element. An anchor of the assembly is engaged through the hole, projects upward from the sleeper, is transversely shiftable in the hole, and bears upward on the sleeper. A spring clip is pressed by the anchor down against the rail and presses the rail down against the metal sleeper.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: July 7, 2020
    Assignee: SCHWIHAG AG
    Inventors: Jia Liu, Stefan Lienhard, William Locci, Frank Meyer
  • Publication number: 20200024808
    Abstract: Rail fastening system for fastening at least one rail (2) to a rail substrate, preferably a solid travel path, which comprises: a rail support plate (1) arranged for holding the rail (2), wherein the rail (2) in the mounted state is in contact with the rail support plate and is fastened thereto by a rail mount (1a, 1b, 1c); a base plate (3) arranged for fastening the rail support plate (1) on the rail substrate, wherein the rail support plate (1) in the mounted state is fastened on the base plate (3) by way of one or more, preferably two, retaining elements (6) and the base plate (3) is in contact with the rail substrate; wherein the base plate (3) is of multi-part, preferably two-part, construction so that this is adjustable to different dimensions of the rail support plate (1).
    Type: Application
    Filed: July 17, 2019
    Publication date: January 23, 2020
    Applicant: SCHWIHAG AG
    Inventors: Tilman Rützel, Stefan Lienhard, Frank Meyer
  • Publication number: 20180058013
    Abstract: A holddown assembly fastens a railway rail to a transversely extending hollow sleeper formed with a vertically throughgoing hole. An upwardly projecting lateral brace element is provided on the sleeper offset from the hole, and the assembly has a body fitted between the rail and the brace element and transversely bracing the rail against the brace element. An anchor of the assembly is engaged through the hole, projects upward from the sleeper, is transversely shiftable in the hole, and bears upward on the sleeper. A spring clip is pressed by the anchor down against the rail and presses the rail down against the metal sleeper.
    Type: Application
    Filed: August 28, 2017
    Publication date: March 1, 2018
    Inventors: Jia LIU, Stefan LIENHARD, William LOCCI, Frank MEYER
  • Publication number: 20170306567
    Abstract: An assembly for securing a longitudinally extending rail for rail vehicles has a metallic base plate detachably fixed to a solid substrate. Rail holddowns secure the rail to the base plate, and retaining devices anchored in the substrate and pressing the base plate down against the base plate.
    Type: Application
    Filed: April 21, 2017
    Publication date: October 26, 2017
    Inventors: Frank MEYER, Tilmann RUETZEL, Stefan LIENHARD
  • Patent number: 9458575
    Abstract: The invention relates to a rail attachment system (1) for attaching a rail (2) to a concrete support slab (3a) or a concrete sleeper (3b) or to a steel structure comprising an intermediate plate (4), a rail attachment plate (5) with angle guide plates (6, 6b) arranged thereon, at least two first tensioning clamps (7a) for clamping the rail foot (2a) to the rail attachment plate (5) as well as screws (9) and/or ankle bolts (10) and at least two second tensioning clamps for screwing the rail attachment system (1) to the underlying surface, characterized in that an elastic intermediate layer (8) is arranged between the rail (2) and the rail attachment plate (5), and the intermediate plate (4) is composed of a highly elastic material and/or comprises a steel plate (4), at least two second tensioning clamps (7b) for clamping the rail attachment plate (5) to the substructure, preferably via the intermediate plate (4), wherein the first and second tensioning clamps (7a, 7b) are embodied in a highly elastic fashion w
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: October 4, 2016
    Assignee: SCHWIHAG AG
    Inventors: Daniel Walter, Stefan Lienhard, Erik Danneberg, Roland Buda
  • Patent number: 9290888
    Abstract: Rail-fastening system for the non-positive resilient fastening of a rail (2) on a sleeper (1) of a railway track installation, comprising at least one angle guide plate (5), which can be fixed to the sleeper (1) with at least one screw (4), and at least one clamp (3), characterized in that the bending radii of the clamp arms (3a, 3b) of the clamp (3) preferably lie in the range from 18-70 mm, wherein the ratio of mutually adjacent bending radii within each clamping arm is ?1.9 and the ratio of the greatest to the smallest bending radius thereof is ?3.8, and in that the ratio of weight to width of the angle guide plate is <1.3 g/mm, preferably about 1.25 g/mm.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: March 22, 2016
    Assignee: SCHWIHAG AG
    Inventors: Stefan Lienhard, Daniel Walter, Erik Danneberg, Roland Buda
  • Publication number: 20150136865
    Abstract: The invention relates to a rail attachment system (1) for attaching a rail (2) to a concrete support slab (3a) or a concrete sleeper (3b) or to a steel structure comprising an intermediate plate (4), a rail attachment plate (5) with angle guide plates (6, 6b) arranged thereon, at least two first tensioning clamps (7a) for clamping the rail foot (2a) to the rail attachment plate (5) as well as screws (9) and/or ankle bolts (10) and at least two second tensioning clamps for screwing the rail attachment system (1) to the underlying surface, characterized in that an elastic intermediate layer (8) is arranged between the rail (2) and the rail attachment plate (5), and the intermediate plate (4) is composed of a highly elastic material and/or comprises a steel plate (4), at least two second tensioning clamps (7b) for clamping the rail attachment plate (5) to the substructure, preferably via the intermediate plate (4), wherein the first and second tensioning clamps (7a, 7b) are embodied in a highly elastic fashion w
    Type: Application
    Filed: July 23, 2013
    Publication date: May 21, 2015
    Inventors: Daniel Walter, Stefan Lienhard, Erik Danneberg, Roland Buda
  • Publication number: 20140103132
    Abstract: Rail-fastening system for the non-positive resilient fastening of a rail (2) on a sleeper (1) of a railway track installation, comprising at least one angle guide plate (5), which can be fixed to the sleeper (1) with at least one screw (4), and at least one clamp (3), characterized in that the bending radii of the clamp arms (3a, 3b) of the clamp (3) preferably lie in the range from 18-70 mm, wherein the ratio of mutually adjacent bending radii within each clamping arm is ?1.9 and the ratio of the greatest to the smallest bending radius thereof is ?3.8, and in that the ratio of weight to width of the angle guide plate is <1.3 g/mm, preferably about 1.25 g/mm.
    Type: Application
    Filed: June 11, 2012
    Publication date: April 17, 2014
    Applicant: SCHWIHAG AG
    Inventors: Stefan Lienhard, Daniel Walter, Erik Danneberg, Roland Buda