Patents by Inventor Holger Froehling

Holger Froehling 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).

  • 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: 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: 11123830
    Abstract: An accessory device for a hand-held power tool includes a dust collection box that has a housing and a filter unit configured to filter an airflow. The housing is configured to be connected to a housing of the accessory device via a first securing unit. The filter unit is configured to be connected to the housing of the dust collection box via a second securing unit. The filter unit has a first sealing element arranged on the dust collection box side and a second sealing element arranged on the accessory device side. The filter unit is sealed from the housing of the dust collection box and the housing of the accessory device via the first and second sealing elements. The hand-held power tool in one embodiment is configured with a percussive mechanism.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: September 21, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Andre Ullrich, Benjamin Nikolas Fischle, Juergen Dietel, Holger Froehling, Erwin Orendi
  • Publication number: 20190358758
    Abstract: An accessory device for a hand-held power tool includes a dust collection box that has a housing and a filter unit configured to filter an airflow. The housing is configured to be connected to a housing of the accessory device via a first securing unit. The filter unit is configured to be connected to the housing of the dust collection box via a second securing unit. The filter unit has a first sealing element arranged on the dust collection box side and a second sealing element arranged on the accessory device side. The filter unit is sealed from the housing of the dust collection box and the housing of the accessory device via the first and second sealing elements. The hand-held power tool in one embodiment is configured with a percussive mechanism.
    Type: Application
    Filed: November 20, 2017
    Publication date: November 28, 2019
    Inventors: Andre Ullrich, Benjamin Nikolas Fischle, Juergen Dietel, Holger Froehling, Erwin Orendi
  • Patent number: 9844869
    Abstract: A hand tool machine device with a drive unit comprising at least one drive shaft, a transmission unit including at least one transmission element, a cooling unit including at least one fan element, and at least one sealing element configured to seal the transmission unit in at least on axial direction. The at least one fan element includes at least one receiving region configured to at least partially receive the at least one sealing element.
    Type: Grant
    Filed: January 3, 2013
    Date of Patent: December 19, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Andre Ullrich, Holger Froehling
  • Patent number: 9427850
    Abstract: A drywall screwdriver includes a housing, an element delimiting the depth of engagement, a drive unit, an outlet spindle, and a planetary gear that comprises at least one hollow wheel. The drywall screwdriver further comprises at least one support element that is different from a housing element and that at least partially surrounds the ring gear of the planetary gear.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: August 30, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Andre Ullrich, Holger Froehling
  • Publication number: 20150209945
    Abstract: A drywall screwdriver includes a housing, a screw-in depth limitation element, a gear unit, an output spindle, a drive unit, and a coupling unit. The coupling unit is configured to couple and/or decouple a torque transmission of the gear unit to the output spindle. A gear element of the gear unit is permanently connected to at least one coupling element of the coupling unit.
    Type: Application
    Filed: June 4, 2012
    Publication date: July 30, 2015
    Applicant: Robert Bosch GmbH
    Inventors: Andre Ullrich, Holger Froehling
  • Publication number: 20150003900
    Abstract: A hand tool machine device with a drive unit comprising at least one drive shaft, a transmission unit including at least one transmission element, a cooling unit including at least one fan element, and at least one sealing element configured to seal the transmission unit in at least on axial direction. The at least one fan element includes at least one receiving region configured to at least partially receive the at least one sealing element.
    Type: Application
    Filed: January 3, 2013
    Publication date: January 1, 2015
    Inventors: Andre Ullrich, Holger Froehling
  • Publication number: 20140318822
    Abstract: A portable power tool includes at least one tool receptacle (60) which has at least one rotation axis, and includes at least one housing which has at least one handle region. The handle region comprises at least one gripping plane extending at least substantially parallel to the rotation axis of the tool receptacle. The gripping plane extends through a point on the housing that is located on a side of the housing that is remote from the tool receptacle. The point is a point on the housing that is closest to the tool receptacle on that side of the housing that is remote from the tool receptacle. The gripping plane is at a minimum distance of greater than 4 mm from the rotation axis.
    Type: Application
    Filed: April 17, 2014
    Publication date: October 30, 2014
    Applicant: Robert Bosch GmbH
    Inventors: Andre Ullrich, Holger Froehling
  • Publication number: 20140230609
    Abstract: A drywall screwdriver includes a housing, an element delimiting the depth of engagement, a drive unit, an outlet spindle, and a planetary gear that comprises at least one hollow wheel. The drywall screwdriver further comprises at least one support element that is different from a housing element and that at least partially surrounds the ring gear of the planetary gear.
    Type: Application
    Filed: June 1, 2012
    Publication date: August 21, 2014
    Applicant: Robert Bosch GmbH
    Inventors: Andre Ullrich, Holger Froehling