Patents by Inventor Uwe Engelfried

Uwe Engelfried 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: 10695939
    Abstract: The disclosure relates to a power tool separation device, in particular a hand-held power tool separation device, comprising at least one cutting unit which comprises at least two interconnected cutter support elements. At least two cutter support elements are interconnected by means of at least one connecting element of the cutting unit, and the connecting element is essentially flush with at least one outer surface of the at least two cutter support elements.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: June 30, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Rudolf Fuchs, Petr Grulich, Uwe Engelfried
  • Patent number: 10639731
    Abstract: A hand-held power tool includes an SDS tool receiver and a tool housing. The SDS tool receiver includes at least one vacuuming-off channel and is configured to receive an exchangeable insert tool such that the at least one vacuuming-off channel enables removal of dust produced during operation of the exchangeable insert tool with a workpiece. The tool housing includes at least one drive unit configured to drive the exchangeable insert tool.
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: May 5, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Uwe Engelfried, Thomas Duerr
  • Publication number: 20200001493
    Abstract: A power-tool cutting device includes at least one cutting strand, at least one guide unit configured to guide the cutting strand, and at least one deflecting unit. The guide unit together with the cutting strand forms a closed system. The deflecting unit is arranged on a drive-remote side of the guide unit and has at least one movably mounted deflecting element configured to deflect the cutting strand at least while the cutting strand revolves about the guide unit. The deflecting element includes at least one contact surface for an at least temporary contact with the cutting strand. The deflecting element is configured to be at least substantially free from an extension for engagement in the cutting strand.
    Type: Application
    Filed: August 8, 2019
    Publication date: January 2, 2020
    Inventors: Uwe Engelfried, Petr Grulich
  • Patent number: 10500656
    Abstract: A power tool system includes at least one power tool which has at least one workpiece support unit that is configured to support a workpiece during machining, and also includes at least one machining tool device which extends through a workpiece support surface of the workpiece support unit in at least one operating state. The machining tool device includes at least one cutting strand that is configured to be driven in circulation. A ratio of a maximum height of the workpiece support unit to a maximum cutting depth of the machining tool device is less than 4.1.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: December 10, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Tobias Lutz, Robin Schuler, Uwe Engelfried
  • Patent number: 10384367
    Abstract: A cutting strand segment for a cutting strand of a machine tool separating device includes at least one blade carrier element, at least one blade element arranged on the blade carrier element, and at least one cutting depth limiting element arranged on the blade carrier element which is configured to limit a maximum cutting depth of the blade element to a value that is less than 0.5 mm.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: August 20, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Uwe Engelfried, Petr Grulich
  • Patent number: 10350782
    Abstract: A method for producing a cutting unit segment of a cutting unit of a machine tool separating device, includes at least one cutter support element and at least one cutter element. In at least one step, the cutter element is molded on the cutter support element by a drawing process in an at least partially staggered manner relative to an outer surface of the cutter support element.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: July 16, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Uwe Engelfried, Milan Bozic, Petr Grulich
  • Patent number: 10173339
    Abstract: A machine tool separating device, in particular on a handheld machine tool separating device, includes at least one cutting strand and at least one guide unit, which form a self-contained system. The guide unit comprises at least one main guide unit element and/or at least one cutting strand holding unit, wherein at least the main guide unit element and/or the cutting strand holding unit has at least two guide surfaces, which have different alignments in relation to one another and which, when mounted, are provided to guide the cutting strand.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: January 8, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Rudolf Fuchs, Petr Grulich, Uwe Engelfried
  • Publication number: 20180272556
    Abstract: The disclosure relates to a power tool separation device, in particular a hand-held power tool separation device, comprising at least one cutting unit which comprises at least two interconnected cutter support elements. At least two cutter support elements are interconnected by means of at least one connecting element of the cutting unit, and the connecting element is essentially flush with at least one outer surface of the at least two cutter support elements.
    Type: Application
    Filed: May 31, 2018
    Publication date: September 27, 2018
    Inventors: Rudolf Fuchs, Petr Grulich, Uwe Engelfried
  • Patent number: 10052785
    Abstract: The disclosure relates to a power tool separation device, in particular a hand-held power tool separation device, comprising at least one cutting unit which comprises at least two interconnected cutter support elements. At least two cutter support elements are interconnected by means of at least one connecting element of the cutting unit, and the connecting element is essentially flush with at least one outer surface of the at least two cutter support elements.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: August 21, 2018
    Assignee: Robert Bosch GmbH
    Inventors: Rudolf Fuchs, Petr Grulich, Uwe Engelfried
  • Publication number: 20180162007
    Abstract: A power-tool cutting device includes at least one cutting strand, at least one guide unit configured to guide the cutting strand, and at least one deflecting unit. The guide unit together with the cutting strand forms a closed system. The deflecting unit is arranged on a drive-remote side of the guide unit and has at least one movably mounted deflecting element configured to deflect the cutting strand at least while the cutting strand revolves about the guide unit. The deflecting element includes at least one contact surface for an at least temporary contact with the cutting strand. The deflecting element is configured to be at least substantially free from an extension for engagement in the cutting strand.
    Type: Application
    Filed: July 4, 2016
    Publication date: June 14, 2018
    Inventors: Uwe Engelfried, Petr Grulich
  • Publication number: 20170320227
    Abstract: A machining tool, in particular to a rotating cutter machining tool, includes at least one cutting strand and at least one cutting strand-guiding unit. The machining tool also includes at least one cutting edge-guiding unit disposed on the cutting strand-guiding unit. The cutting edge-guiding unit has a maximum transverse extension that is equal to or greater than a maximum cutting width of the cutting strand.
    Type: Application
    Filed: May 8, 2014
    Publication date: November 9, 2017
    Inventors: Uwe Engelfried, Rudolf Fuchs, Thomas Duerr
  • Patent number: 9789627
    Abstract: A power cutting tool includes at least one cutting strand and at least one guide unit configured to guide the cutting strand. The power cutting tool further includes at least one cutting strand contact guard unit which has at least one cutting strand contact guard element. The at least one cutting strand contact guard element is movably mounted on the guide unit and is configured to at least substantially prevent, in at least one operating position of the cutting strand contact guard element, contact between the cutting strand and a user of the power cutting tool.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: October 17, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Uwe Engelfried, Petr Grulich
  • Patent number: 9789625
    Abstract: A separating device for a machine tool includes at least one cutting strand and at least one guide unit configured to guide the cutting strand. The guide unit forms a closed system together with the cutting strand. The separating device further includes at least one cutting strand tensioning unit that is positioned on the guide unit, and that is configured to compensate for at least one of play and tolerance in the cutting strand.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: October 17, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Uwe Engelfried, Petr Grulich
  • Publication number: 20170291237
    Abstract: A hand-held power tool includes an SDS tool receiver and a tool housing. The SDS tool receiver includes at least one vacuuming-off channel and is configured to receive an exchangeable insert tool such that the at least one vacuuming-off channel enables removal of dust produced during operation of the exchangeable insert tool with a workpiece. The tool housing includes at least one drive unit configured to drive the exchangeable insert tool.
    Type: Application
    Filed: September 23, 2015
    Publication date: October 12, 2017
    Inventors: Uwe Engelfried, Thomas Duerr
  • Patent number: 9744606
    Abstract: A power cutting tool includes at least one cutting strand, and at least one guide unit that is configured to guide the cutting strand. The power cutting tool further includes at least one coding unit which has at least one coding element that is configured to encode at least one coupling interface of the guide unit.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: August 29, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Uwe Engelfried, Petr Grulich, Thomas Duerr
  • Patent number: 9744686
    Abstract: A machine tool separating device, in particular a manual machine tool separating device, includes at least one cutting train that comprises at least one cutter-support element and at least one connecting element that is integrally formed with the cutter-support element. The cutter-support element has at least one transverse securing element that is configured to secure the cutter-support element against a transverse movement relative to another cutter-support element of the cutting train to the greatest extent possible in the assembled state.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: August 29, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Uwe Engelfried, Petr Grulich
  • Patent number: 9724841
    Abstract: A tool coupling device for a receptacle of a machine tool separating device formed as a closed system includes at least one cutting strand tensioning unit that has at least one tensioning element. The tool coupling device also includes at least one operating unit that includes at least one operating element. The cutting strand tensioning unit includes at least one gear unit that is configured to move the tensioning element as a result of an actuation of the operating element of the operating unit.
    Type: Grant
    Filed: June 10, 2013
    Date of Patent: August 8, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Uwe Engelfried, Thomas Duerr, Jens Zieger, Petr Grulich
  • Patent number: 9707677
    Abstract: A closure device, in particular a tool-holder closure device, includes at least one movably mounted closure element and at least one securing unit. The securing unit includes at least one movably mounted securing element configured to secure the closure element in at least one position thereof. The closure device further includes at least one stop unit which has at least one stop element. The stop element, depending on at least one position of the closure element, is configured to stop the securing element at least largely against a movement relative to the closure element.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: July 18, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Jens Zieger, Uwe Engelfried, Thomas Duerr
  • Patent number: 9701037
    Abstract: A tool coupling device is configured to hold a machine tool cutting device. In particular, the tool coupling device is configured to hold a machine tool cutting device configured as a closed system, having at least one cutting train clamping unit for generating a cutting train clamping force and having at least one tool-holding unit comprising at least one movably mounted tool-holder element. The tool coupling device includes at least one movement-coupling unit by which the tool-holder element can be coupled with a clamping element for a movement of the clamping element of the cutting train clamping unit.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: July 11, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Jens Zieger, Uwe Engelfried, Petr Grulich, Thomas Duerr
  • Publication number: 20150321375
    Abstract: A closure device, in particular a tool-holder closure device, includes at least one movably mounted closure element and at least one securing unit. The securing unit includes at least one movably mounted securing element configured to secure the closure element in at least one position thereof. The closure device further includes at least one stop unit which has at least one stop element. The stop element, depending on at least one position of the closure element, is configured to stop the securing element at least largely against a movement relative to the closure element.
    Type: Application
    Filed: May 15, 2013
    Publication date: November 12, 2015
    Inventors: Jens Zieger, Uwe Engelfried, Thomas Duerr