Patents by Inventor Tilo Hofmann

Tilo Hofmann 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: 11456099
    Abstract: An electromagnetic actuating device includes a pole tube that is substantially cylindrical overall, an armature situated radially inside the pole tube, and an electromagnetic coil situated radially outside the pole tube, the pole tube having a first axial end and a second axial end. The pole tube is configured as a sleeve that is stamped and is brought into its shape by reshaping, the sleeve having, close to its first axial end, openings that extend in the circumferential direction.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: September 27, 2022
    Assignee: Robert Bosch GmbH
    Inventors: Klaus Schudt, Tilo Hofmann
  • Publication number: 20200203049
    Abstract: An electromagnetic actuating device includes a pole tube that is substantially cylindrical overall, an armature situated radially inside the pole tube, and an electromagnetic coil situated radially outside the pole tube, the pole tube having a first axial end and a second axial end. The pole tube is configured as a sleeve that is stamped and is brought into its shape by reshaping, the sleeve having, close to its first axial end, openings that extend in the circumferential direction.
    Type: Application
    Filed: December 11, 2019
    Publication date: June 25, 2020
    Inventors: Klaus Schudt, Tilo Hofmann
  • Publication number: 20120104293
    Abstract: A pressure control valve for an automatic transmission in a motor vehicle includes a housing, a valve slide which is guided in the housing and which has multiple adjacent sections, a first section having a first diameter, a second section adjacent thereto having a second diameter smaller than the first diameter, and a third section having the first diameter adjacent to the second section. An inflow pressure opening is assigned to the first section, a control pressure opening is assigned to the second section and a return flow opening is assigned to the third section. An electromagnetic actuating device acts upon the valve slide via a piston, which is guided pressure-tight in the housing.
    Type: Application
    Filed: February 18, 2010
    Publication date: May 3, 2012
    Inventors: Walter Fleischer, Tilo Hofmann, Andrzej Pilawski, Klaus Schudt, Christof Ott
  • Publication number: 20090267009
    Abstract: A solenoid valve for actuating an actuator having an armature and an electromagnet. The stroke of the armature is transferred to the actuator via a transfer element. The armature is accommodated in a guide of a housing of the solenoid valve. A damping element is situated between the armature and the transfer element, at least one aperture cross section being formed perpendicularly or coaxially to a symmetry axis in the damping element.
    Type: Application
    Filed: May 22, 2006
    Publication date: October 29, 2009
    Inventors: Tilo Hofmann, Claus Fleig
  • Patent number: 6378545
    Abstract: An electromagnetically actuable proportional hydraulic valve (10) is described, which is distinguished in particular by a constant, low-wear operating performance. This is attained by means of a closing member (60) having an approximately conical sealing body (60c, 70) with a curved dome-like face end oriented toward the valve seat (58). The sealing body (60c, 70) together with the valve seat (58) forms a conical seat valve. The sealing body of the closing member (60) is provided with a flow separation edge (60d), which improves the temperature sensitivity of the proportional valve (10).
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: April 30, 2002
    Assignee: Robert Bosch GmbH
    Inventors: Aytekin Bozkan, Tilo Hofmann, Christof Ott