Patents by Inventor Hans-Jürgen Pfisterer

Hans-Jürgen Pfisterer 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: 11008036
    Abstract: A steering system with an actuating device (1), in particular a rear axle steering system, having a spindle drive (3) with a spindle (5) and a spindle nut (4) which is fitted into the housing (2) of the steering system in a positionally fixed but rotatable manner and is driven by an electric motor (9). The electric motor (9) is a vernier motor that drives the spindle drive (3) and is integrated in the spindle drive (3). The actuating device (1) is used for a rear axle steering system of a motor vehicle.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: May 18, 2021
    Assignee: ZF Friedrichshafen AG
    Inventors: Michael Klank, Jens Vortmeyer, Hans-Jürgen Pfisterer, Adrian Riechmann, Christoph Anneken
  • Publication number: 20190092378
    Abstract: A steering system with an actuating device (1), in particular a rear axle steering system, having a spindle drive (3) with a spindle (5) and a spindle nut (4) which is fitted into the housing (2) of the steering system in a positionally fixed but rotatable manner and is driven by an electric motor (9). The electric motor (9) is a vernier motor that drives the spindle drive (3) and is integrated in the spindle drive (3). The actuating device (1) is used for a rear axle steering system of a motor vehicle.
    Type: Application
    Filed: April 27, 2017
    Publication date: March 28, 2019
    Applicant: ZF Friedrichshafen AG
    Inventors: Michael KLANK, Jens VORTMEYER, Hans-Jürgen PFISTERER, Adrian SACCHI, Christoph ANNEKEN
  • Patent number: 7174972
    Abstract: An electrical hand-held power tool includes a non-contacting electrical manual control switch (3) having an operating element (4) and a sensor switch (5), a pivotable carrier (6) which carries a switching element (13) and which is manually controlled by the operating element (4) of the manually control switch (3), the sensor switch (5) being connected with the carrier (6) vibration-free, and pivot transmitting device (7) axially displaceable along the vibration axis A) of a vibrating assembly (2) of the power tool relative to the operating element (4) for pivoting the carrier (6) in response to actuation of the operating element (4).
    Type: Grant
    Filed: November 22, 2005
    Date of Patent: February 13, 2007
    Assignee: Hilti Aktiengesellschaft
    Inventors: Ferdinand Kristen, Erwin Manschitz, Hans-Jürgen Pfisterer
  • Patent number: 7048076
    Abstract: An electrical hand-held tool includes an electric motor (2) having a rotor shaft (3) extending transverse to the tool percussion axis (A), a rotor sheet stack (4) supported on the rotor shaft, and a pinion (5) supported on the rotor shaft, a percussion mechanism (6) including an eccentric (7), and a drive gear (8) engageable with the motor pinion (5) for driving the eccentric (7), with the rotor sheet stack (4) being arranged, with respect to the percussion axis A, completely diametrically opposite the drive gear (8).
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: May 23, 2006
    Assignee: Hilti Aktiengesellschaft
    Inventors: Holger Cecchin, Christian Daubner, Hubert Daxenberger, David Hruza, Christoph Kink, Ferdinand Kristen, Erwin Manschitz, Hans-Juergen Pfisterer, Walter Wissmach
  • Patent number: 6866105
    Abstract: An electrical tool includes a housing having inlet (7) and outlet (8) openings, a brushless electric motor (2) and an inverted rectifier (3) both arranged in the housing (9) between inlet (7) and outlet (8) openings in an air stream (5) of an air volume (6), and a link condensator (10) located in the housing (9) in the air stream (5), with the inverted rectifier (3) being arranged, in the air flow direction, downstream of the link condensator (10) and upstream of the electric motor (2).
    Type: Grant
    Filed: September 11, 2003
    Date of Patent: March 15, 2005
    Assignee: Hilti Aktiengesellschaft
    Inventors: Hans-Jürgen Pfisterer, Holger Cecchin, Walter Wissmach, Christoph Kink, Ferdinand Kristen, Rudolf Bauer, Erwin Manschitz
  • Publication number: 20040182589
    Abstract: An electrical hand-held tool includes an electric motor (2) having a rotor shaft (3) extending transverse to the tool percussion axis (A), a rotor sheet stack (4) supported on the rotor shaft, and a pinion (5) supported on the rotor shaft, a percussion mechanism (6) including an eccentric (7), and a drive gear (8) engageable with the motor pinion (5) for driving the eccentric (7), with the rotor sheet stack (4) being arranged, with respect to the percussion axis A, completely diametrically opposite the drive gear (8).
    Type: Application
    Filed: December 18, 2003
    Publication date: September 23, 2004
    Inventors: Holger Cecchin, Christian Daubner, Hubert Daxenberger, David Hruza, Christoph Kink, Ferdinand Kristen, Erwin Manschitz, Hans-Juergen Pfisterer, Walter Wissmach