Patents by Inventor Ralf Dirscherl

Ralf Dirscherl 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: 9463825
    Abstract: A motor vehicle steering gear with a gear rack and a drive pinion that meshes with it, which drive pinion comprises a rigidly attached drive projection in a rotational bearing that is on a front face and eccentric to the pinion teething for coupling a motor vehicle steering spindle, said rotational bearing being guided in a direction transverse and parallel to a diametrical plane formed by the pinion teething, such that when the pinion is rotating, compensation strokes for the rotational bearing are specified in a direction transverse to the gear rack, said compensation strokes being caused by the eccentric attachment of the drive projection, a retaining projection rigidly attached at a front face concentrically to the pinion teeth, the retaining projection being rotatably in engagement with the retaining piece that is guided within a gear housing parallel to the gear rack teeth, is and that during pinion rotation compensation strokes parallel with and at a constant distance to the gear rack teeth are specifi
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: October 11, 2016
    Assignee: SchmitterGroup AG
    Inventors: Friedhelm Gunther, Marco Schmidt, Ralf Dirscherl
  • Publication number: 20160001351
    Abstract: A method for producing a tubular, hollow drive shaft, in particular a cardan shaft, from a pre-tube, in particular a longitudinally welded, normalized steel tube, which is extended by having the wall thickness thereof reduced at least sectionally by way of single or multiple ironing or another cold forming operation and/or by having the inner diameter and/or outer diameter thereof changed, wherein at least one pre-tube end or shaft end is configured into a flange that is integrated in one piece by to way of cold forming.
    Type: Application
    Filed: February 27, 2012
    Publication date: January 7, 2016
    Inventors: Friedhelm GUNTHER, Ralf DIRSCHERL, Marco SCHMIDT
  • Publication number: 20150377315
    Abstract: A method for producing a cylinder tube (2), which is closed at the end so as to be fluid-tight, from a tubular blank (30). The blank (30) is formed into the cylinder tube (2) with the aid of a cold forming method in such a way that on an end region (6) of the cylinder tube (2) an opening (8) remains in the cylinder tube (30), a mounting region (12) is produced in the radially outer edge region (10) of the end region (6) and the cylinder tube (2) is closed by fluid-tight attachment on the mounting region (12) of an end piece (14) which closes the opening (8). A cylinder tube (2) comprises the cylinder tube (2) cold formed from the blank (30) having an opening (8) at the end, the mounting region (12) and an end piece (14) attached to the mounting region (12) so as to be fluid-tight.
    Type: Application
    Filed: November 28, 2012
    Publication date: December 31, 2015
    Applicant: SchmitterGroup AG
    Inventors: Friedhelm Gunther, Marco Schmidt, Ralf Dirscherl
  • Publication number: 20150343506
    Abstract: Method for producing a container tube (15), in particular a supporting means for a motor vehicle strut, with longitudinal sections of tube (I-IV) of different wall thicknesses and/or inner and/or outer diameters, following one after the other in the longitudinal direction, starting from a hollow and/or tubular blank (1), by means of repeated drawing and wall ironing by means of at least one drawing and wall ironing female die (6, 13, 16), applied to the outside of the blank, towards a male die (9, 19, 22), for example a punch or mandrel, in contact with the inside of the blank, wherein, for at least some of the longitudinal sections (I-IV), a change of the male die is carried out before they are drawn and wall ironed.
    Type: Application
    Filed: November 2, 2012
    Publication date: December 3, 2015
    Inventors: Friedhelm Gunther, Marco Schmidt, Ralf Dirscherl
  • Publication number: 20150040693
    Abstract: A motor vehicle steering gear with a gear rack and a drive pinion that meshes with it, which drive pinion comprises a rigidly attached drive projection in a rotational bearing that is on a front face and eccentric to the pinion teething for coupling a motor vehicle steering spindle, said rotational bearing being guided in a direction transverse and parallel to a diametrical plane formed by the pinion teething, such that when the pinion is rotating, compensation strokes for the rotational bearing are specified in a direction transverse to the gear rack, said compensation strokes being caused by the eccentric attachment of the drive projection, a retaining projection rigidly attached at a front face concentrically to the pinion teeth, the retaining projection being rotatably in engagement with the retaining piece that is guided within a gear housing parallel to the gear rack teeth, is and that during pinion rotation compensation strokes parallel with and at a constant distance to the gear rack teeth are specifi
    Type: Application
    Filed: February 20, 2013
    Publication date: February 12, 2015
    Inventors: Friedhelm Gunther, Marco Schmidt, Ralf Dirscherl