Patents by Inventor Jens Blum

Jens Blum 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: 9682468
    Abstract: A handheld machine tool has a drive motor for driving a tool holder, in which a tool is able to be accommodated. In addition, a cam-action mechanism for generating a hammer function is provided, which includes a cam-action mechanism holder and a notched disk. The cam-action mechanism holder is in contact with a heat-dissipating component situated inside the housing.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: June 20, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Jens Blum, Heiko Roehm, Tobias Herr
  • Patent number: 9573264
    Abstract: The invention is based on a handheld power tool, in particular a cordless handheld power tool, having a gear unit and having a switch device for switching the gear unit. The switch device is provided with at least one user-control switch element, and at least one retaining element that is provided for acting on the user-control switch element in at least one position of the user-control switch element, with a force in the direction of at least one switch position, or for keeping the user-control switch element in at least one switch position. According to the invention, the retaining element is secured to a gear element of the gear unit.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: February 21, 2017
    Assignee: ROBERT BOSCH GMBH
    Inventors: Thorsten Schaal, Ralf Windsheimer, Jens Blum, Heiko Roehm, Tobias Herr
  • Publication number: 20160346911
    Abstract: A tool attachment for a handheld power tool that has a housing having a fastening interface includes: an attachment housing on which there is situated a locking unit for locking the tool attachment on the fastening interface of the handheld power tool; a tool receptacle for accommodating an insertion tool; and a hammer mechanism situated in the attachment housing, which hammer mechanism is configured to apply an impact in the axial direction of the tool receptacle on the insertion tool, during hammer operation of the tool attachment.
    Type: Application
    Filed: March 24, 2014
    Publication date: December 1, 2016
    Inventors: Jens BLUM, Heiko ROEHM, Joerg WELKE, Dietmar SAUR, Tobias HERR
  • Publication number: 20160303729
    Abstract: In a tool attachment for a handheld power tool, which includes a tool housing having a fastening interface, having an attachment housing, on which a locking unit, for locking the tool attachment on the fastening interface of the handheld power tool, and a tool receptacle for accommodating an insert tool are situated, a percussion mechanism is situated in the attachment housing, which is configured to apply percussions carried out in the axial direction in relation to the tool receptacle to an insert tool, which is situated in the tool receptacle, during percussion operation of the tool attachment, the tool receptacle being fixed in position in the attachment housing in a non-rotating way at least during percussion operation.
    Type: Application
    Filed: March 14, 2016
    Publication date: October 20, 2016
    Inventors: Jens Blum, Heiko Roehm, Tobias Herr
  • Patent number: 9194462
    Abstract: In a handheld power tool having a planetary gear set which is at least switchable between a first and a second gear and which is assigned a switching annulus gear which is at least shiftable between a first and a second switching position and which has the first switching position in the first gear and the second switching position in the second gear, the switching annulus gear is assigned a synchronization unit which is designed to enable a synchronization of the switching annulus gear with a planet carrier or with a blocking element of the planetary gear set when the switching annulus gear is shifted between the first and the second switching position to switch over the planetary gear set.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: November 24, 2015
    Assignee: ROBERT BOSCH GMBH
    Inventors: Jens Blum, Tobias Herr
  • Patent number: 9133909
    Abstract: A hand-held tool device includes a planetary transmission and a striking mechanism. The striking mechanism has at least one striking mechanism shut-off clutch and a striking mechanism switching spring which opens the striking mechanism shut-off clutch in at least one operating state. The planetary transmission has at least one planetary transmission stage which at least partially encloses the striking mechanism switching spring in at least one plane.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: September 15, 2015
    Assignee: ROBERT BOSCH GMBH
    Inventors: Jens Blum, Tobias Herr
  • Publication number: 20150101836
    Abstract: The invention is based on a hand-held power tool device equipped with a locking device. The locking device is provided for locking an output device and has at least one locking element for supporting at least one radial clamping force. According to a proposed embodiment, the locking element is provided to fasten and/or axially secure at least one component.
    Type: Application
    Filed: December 19, 2014
    Publication date: April 16, 2015
    Inventors: Jens BLUM, Heiko ROEHM, Tobias HERR
  • Patent number: 8939232
    Abstract: The invention is based on a hand-held power tool device equipped with a locking device. The locking device is provided for locking an output device and has at least one locking element for supporting at least one radial clamping force. According to a proposed embodiment, the locking element is provided to fasten and/or axially secure at least one component.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: January 27, 2015
    Assignee: Robert Bosch GmbH
    Inventors: Jens Blum, Heiko Roehm, Tobias Herr
  • Publication number: 20150000950
    Abstract: In a handheld machine tool having a tool housing, in which a drive motor is situated for driving a drive element equipped with at least one clamping surface, to which a spindle-locking device equipped with a blocking element and at least one spindle cylinder is assigned, the at least one spindle cylinder being able to be clamped in a spindle-lock operation of the spindle-locking device between the at least one clamping surface and the blocking element n order to prevent the drive element from rotating relative to the tool housing, the spindle-locking device has an impingement element, which is developed to impinge on the at least one spindle cylinder with a specified force in the direction of the at least one clamping surface.
    Type: Application
    Filed: June 24, 2014
    Publication date: January 1, 2015
    Applicant: ROBERT BOSCH GMBH
    Inventors: Jens BLUM, Tobias HERR
  • Publication number: 20140346744
    Abstract: A tool system having a hand-held machine tool including a tool holder for receiving an insert tool; and a mounting interface configured for mounting thereon: an angle attachment that includes an angle locking section for locking on the mounting interface and an angle drive unit; and an eccentric attachment that includes an eccentric locking section for locking on the mounting interface and an eccentric drive unit.
    Type: Application
    Filed: August 15, 2014
    Publication date: November 27, 2014
    Applicant: Robert Bosch GmbH
    Inventors: Tobias HERR, Dietmar SAUR, Gerald FISCHER, Joerg WELKE, Jens BLUM, Andreas NECKER, Torsten TUSSING
  • Publication number: 20130267374
    Abstract: In a handheld power tool having a planetary gear set which is at least switchable between a first and a second gear and which is assigned a switching annulus gear which is at least shiftable between a first and a second switching position and which has the first switching position in the first gear and the second switching position in the second gear, the switching annulus gear is assigned a synchronization unit which is designed to enable a synchronization of the switching annulus gear with a planet carrier or with a blocking element of the planetary gear set when the switching annulus gear is shifted between the first and the second switching position to switch over the planetary gear set.
    Type: Application
    Filed: April 4, 2013
    Publication date: October 10, 2013
    Applicant: ROBERT BOSCH GMBH
    Inventors: Jens BLUM, Tobias HERR
  • Publication number: 20130248217
    Abstract: A handheld machine tool has a drive motor for driving a tool holder, in which a tool is able to be accommodated. In addition, a cam-action mechanism for generating a hammer function is provided, which includes a cam-action mechanism holder and a notched disk. The cam-action mechanism holder is in contact with a heat-dissipating component situated inside the housing.
    Type: Application
    Filed: September 7, 2011
    Publication date: September 26, 2013
    Inventors: Jens Blum, Heiko Roehm, Tobias Herr
  • Publication number: 20130165291
    Abstract: A hand-held tool device includes a planetary transmission and a striking mechanism. The striking mechanism has at least one striking mechanism shut-off clutch and a striking mechanism switching spring which opens the striking mechanism shut-off clutch in at least one operating state. The planetary transmission has at least one planetary transmission stage which at least partially encloses the striking mechanism switching spring in at least one plane.
    Type: Application
    Filed: December 26, 2012
    Publication date: June 27, 2013
    Inventors: Jens BLUM, Tobias HERR
  • Publication number: 20130161042
    Abstract: A hand-held tool device having at least one operating device via which the at least one first transmission ratio and one second transmission ratio and a percussion drilling mode are able to be set. The hand-held tool device has a protective device which prevents an operation in the first transmission ratio in the percussion drilling mode.
    Type: Application
    Filed: December 26, 2012
    Publication date: June 27, 2013
    Inventors: Jens BLUM, Heiko ROEHM, Tobias HERR
  • Publication number: 20130161043
    Abstract: A hand tool device includes: a striking mechanism which has a striker, a striker driving device, and a striker arresting device. In the case of a first drill rotation direction, the striker driving device is configured to propel the striker in at least a striking direction. The striker arresting device is configured to prevent the striker driving device from being operated in the case of a second drill rotation direction.
    Type: Application
    Filed: December 26, 2012
    Publication date: June 27, 2013
    Inventors: Jens Blum, Heiko Roehm, Tobias Herr
  • Publication number: 20130106209
    Abstract: A handheld electric tool has a tool housing in which a drive motor having an assigned commutator is situated, and a screening ring furnished with metal is provided in the area of the commutator on the tool housing for shielding electromagnetic radiation.
    Type: Application
    Filed: March 31, 2011
    Publication date: May 2, 2013
    Inventors: Jens Blum, Heiko Roehm, Tobias Herr
  • Patent number: 8403336
    Abstract: A hand power tool has a housing with having at least two housing parts. A sealing element provides mounting of the housing parts on one another fluid-tightly. The housing parts have short sides with which the housing parts abut against one another with interposition of a sealing element. The sealing element is fixed on one of the housing parts.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: March 26, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Wolfgang Fuchs, Heiko Roehm, Juergen Gairing, Jens Blum
  • Patent number: 8403341
    Abstract: An adapter is provided for a motor-driven machine tool which includes a tool driven in an oscillating rotational pendulum motion. The machine tool includes a driveable tool shaft (1), the end face of which is designed as a locating flange (2) having at least one form-fit element (3) for receiving and fastening the tool (5). The adapter (9) includes, on an end face (16), form-fit counter elements (10) which are matched to the form-fit elements (3) of the tool shaft (1). A plurality of axially projecting mandrels (11) is distributed around the circumference on the opposite end face (13) of the adapter (9).
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: March 26, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Adolf Zaiser, Jens Blum, Marco Braun, Heiko Roehm, Daniel Grolimund, Katharina Holzer
  • Patent number: 8152601
    Abstract: A motor-driven machine tool (1) with a tool that can be rotatably driven comprises a drive shaft (5) and a tool shaft (6) on which the tool is received, the rotational movement of the drive shaft being transmissible onto the tool shaft via a coupling device (8). The drive shaft is rotatably received in pivot bearings (14, 15) in the housing of the machine tool, the coupling device acting upon the drive shaft in the portion between the two pivot bearings.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: April 10, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Adolf Zaiser, Jens Blum, Heiko Roehm
  • Publication number: 20120056388
    Abstract: An adapter is provided for a motor-driven machine tool which includes a tool driven in an oscillating rotational pendulum motion. The machine tool includes a driveable tool shaft (1), the end face of which is designed as a locating flange (2) having at least one form-fit element (3) for receiving and fastening the tool (5). The adapter (9) includes, on an end face (16), form-fit counter elements (10) which are matched to the form-fit elements (3) of the tool shaft (1). A plurality of axially projecting mandrels (11) is distributed around the circumference on the opposite end face (13) of the adapter (9).
    Type: Application
    Filed: November 9, 2011
    Publication date: March 8, 2012
    Inventors: Adolf ZAISER, Jens BLUM, Marco BRAUN, Heiko ROEHM, Daniel GROLIMUND, Katharina HOLZER