Patents by Inventor Fritz Schlegel

Fritz Schlegel 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: 12103126
    Abstract: A suction adapter, in particular a suction drill suction adapter, for connecting an insertion tool, in particular a suction drill, to a suction apparatus includes at least one insertion tool receiving region, in which the insertion tool is arranged, at least one connection interface with respect to an insertion tool suction channel of the insertion tool, and at least one, in particular dimensionally stable, discharge guiding unit configured to delimit a suction channel. The at least one discharge guiding unit has at least one discharge guiding element configured to delimit a suction channel outlet of the suction channel and which has a longitudinal axis. The longitudinal axis of the at least one discharge guiding element is orientated parallel with a main extent axis of the at least one insertion tool receiving region in a region of the suction channel outlet in at least one operating state.
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: October 1, 2024
    Assignee: Robert Bosch GmbH
    Inventors: Andreas Schurig, Edit Okenwa, Fritz Schlegel, Hardy Schmid, Holger Froehling, Michael Briesenick, Stefan Sonntag, Tamara Gaschler
  • Publication number: 20240075572
    Abstract: A suction device for a releasable connection to a hand-held power tool, in particular to a hammer drill, includes a housing with a drive unit arranged in the housing for generating a suction flow, and at least one locking unit for a mechanical coupling with the hand-held power tool. The coupling includes at least one locking element for direct locking with the hand-held power tool and at least one actuating element used to release the lock of the at least one locking element. The actuating element and/or the locking element are arranged at least partially adjacent the drive unit.
    Type: Application
    Filed: August 16, 2023
    Publication date: March 7, 2024
    Inventors: Fritz Schlegel, Holger Froehling
  • Publication number: 20230139577
    Abstract: A hand-held power tool, in particular a hammer drill, includes a tool holder and a housing which has two housing half-shells. The hand-held power tool further includes a drive unit for driving a tool holder arranged in the housing. The drive unit includes at least one drive motor arranged in a motor support and a gear unit arranged in a gear unit housing. The motor support is connected directly to at least one of the two housing half-shells via at least one non-positive connection and at least one positive-locking connection. A relevant fastening axis is assigned to the at least one non-positive connection and to the at least one positive-locking connection. The fastening axis is arranged at right angles to and at a distance from an axis of rotation assigned to the tool holder.
    Type: Application
    Filed: October 19, 2022
    Publication date: May 4, 2023
    Inventors: Fritz Schlegel, Ralf Maier
  • Publication number: 20220105618
    Abstract: A bearing flange for a drive system of a hand-held power tool includes a first bearing point for a driveshaft of a drive motor, a second bearing point for an intermediate shaft, and a third bearing point for a hammer tube. At least one bearing point includes a ball bearing, which is received in a receiving opening of the bearing flange and is axially secured therein by a snap ring.
    Type: Application
    Filed: September 24, 2021
    Publication date: April 7, 2022
    Inventors: Fritz Schlegel, Holger Froehling
  • Publication number: 20220001503
    Abstract: A suction adapter, in particular a suction drill suction adapter, for connecting an insertion tool, in particular a suction drill, to a suction apparatus includes at least one insertion tool receiving region, in which the insertion tool is arranged, at least one connection interface with respect to an insertion tool suction channel of the insertion tool, and at least one, in particular dimensionally stable, discharge guiding unit configured to delimit a suction channel. The at least one discharge guiding unit has at least one discharge guiding element configured to delimit a suction channel outlet of the suction channel and which has a longitudinal axis. The longitudinal axis of the at least one discharge guiding element is orientated parallel with a main extent axis of the at least one insertion tool receiving region in a region of the suction channel outlet in at least one operating state.
    Type: Application
    Filed: June 25, 2021
    Publication date: January 6, 2022
    Inventors: Andreas Schurig, Edit Okenwa, Fritz Schlegel, Hardy Schmid, Holger Froehling, Michael Briesenick, Stefan Sonntag, Tamara Gaschler
  • Patent number: 11060447
    Abstract: A charging device may include a turbine housing and a wastegate valve device. The wastegate valve device may include a flap, a spindle arm, a wastegate spindle, an axial stop, and a lever arm non-rotatably attached to the wastegate spindle. The wastegate spindle may be rotatably mounted in a bushing disposed on the turbine housing. A wastegate duct may be disposed in the turbine housing. The wastegate duct may have a duct aperture enclosed by a valve seat. The duct aperture, when in a closed state, may be closed by the flap of the wastegate valve device. A sealing face of the flap may be defined by a sequence of at least two conical peripheral surfaces arranged next to one another and each having a different inclination.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: July 13, 2021
    Inventors: Alexander Hoehn, Matthias Kaczorowski, Steffen Kurz, Felix Scheerer, Fritz Schlegel
  • Patent number: 10584631
    Abstract: A variable turbine geometry may include guide blades mounted rotatably in a blade carrier via one blade bearing pin for each guide blade, a blade lever arranged at an end of the blade bearing pin that faces away from the respective guide blade, and an articulated lever for a simultaneous adjustment of the guide blades via an adjusting ring arranged between two adjacent blade levers. The articulated lever may be provided with a stop contour, and when one of a maximum flow position or a minimum flow position is reached, the stop contour may lie against one of the two adjacent blade levers to define the one of the maximum flow position or the minimum flow position.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: March 10, 2020
    Assignee: BOSCH MAHLE TURBO SYSTEMS GMBH & GO. KG
    Inventor: Fritz Schlegel
  • Publication number: 20200025061
    Abstract: A charging device may include a turbine housing and a wastegate valve device. The wastegate valve device may include a flap, a spindle arm, a wastegate spindle, an axial stop, and a lever arm non-rotatably attached to the wastegate spindle. The wastegate spindle may be rotatably mounted in a bushing disposed on the turbine housing. A wastegate duct may be disposed in the turbine housing. The wastegate duct may have a duct aperture enclosed by a valve seat. The duct aperture, when in a closed state, may be closed by the flap of the wastegate valve device. A sealing face of the flap may be defined by a sequence of at least two conical peripheral surfaces arranged next to one another and each having a different inclination.
    Type: Application
    Filed: July 16, 2019
    Publication date: January 23, 2020
    Inventors: Alexander Hoehn, Matthias Kaczorowski, Steffen Kurz, Felix Scheerer, Fritz Schlegel
  • Publication number: 20170248072
    Abstract: A variable turbine geometry may include guide blades mounted rotatably in a blade carrier via one blade bearing pin for each guide blade, a blade lever arranged at an end of the blade bearing pin that faces away from the respective guide blade, and an articulated lever for a simultaneous adjustment of the guide blades via an adjusting ring arranged between two adjacent blade levers. The articulated lever may be provided with a stop contour, and when one of a maximum flow position or a minimum flow position is reached, the stop contour may lie against one of the two adjacent blade levers to define the one of the maximum flow position or the minimum flow position.
    Type: Application
    Filed: February 24, 2017
    Publication date: August 31, 2017
    Inventor: Fritz Schlegel