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).
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Patent number: 9751204Abstract: 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: GrantFiled: December 19, 2014Date of Patent: September 5, 2017Assignee: ROBERT BOSCH GMBHInventors: Jens Blum, Heiko Roehm, Tobias Herr
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Patent number: 9682468Abstract: 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: GrantFiled: September 7, 2011Date of Patent: June 20, 2017Assignee: Robert Bosch GmbHInventors: Jens Blum, Heiko Roehm, Tobias Herr
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Patent number: 9573264Abstract: 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: GrantFiled: December 17, 2010Date of Patent: February 21, 2017Assignee: ROBERT BOSCH GMBHInventors: Thorsten Schaal, Ralf Windsheimer, Jens Blum, Heiko Roehm, Tobias Herr
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Publication number: 20160346911Abstract: 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: ApplicationFiled: March 24, 2014Publication date: December 1, 2016Inventors: Jens BLUM, Heiko ROEHM, Joerg WELKE, Dietmar SAUR, Tobias HERR
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Publication number: 20160303729Abstract: 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: ApplicationFiled: March 14, 2016Publication date: October 20, 2016Inventors: Jens Blum, Heiko Roehm, Tobias Herr
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Patent number: 9194462Abstract: 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: GrantFiled: April 4, 2013Date of Patent: November 24, 2015Assignee: ROBERT BOSCH GMBHInventors: Jens Blum, Tobias Herr
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Patent number: 9133909Abstract: 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: GrantFiled: December 26, 2012Date of Patent: September 15, 2015Assignee: ROBERT BOSCH GMBHInventors: Jens Blum, Tobias Herr
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Publication number: 20150101836Abstract: 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: ApplicationFiled: December 19, 2014Publication date: April 16, 2015Inventors: Jens BLUM, Heiko ROEHM, Tobias HERR
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Patent number: 8939232Abstract: 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: GrantFiled: November 22, 2010Date of Patent: January 27, 2015Assignee: Robert Bosch GmbHInventors: Jens Blum, Heiko Roehm, Tobias Herr
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Publication number: 20150000950Abstract: 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: ApplicationFiled: June 24, 2014Publication date: January 1, 2015Applicant: ROBERT BOSCH GMBHInventors: Jens BLUM, Tobias HERR
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Publication number: 20140346744Abstract: 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: ApplicationFiled: August 15, 2014Publication date: November 27, 2014Applicant: Robert Bosch GmbHInventors: Tobias HERR, Dietmar SAUR, Gerald FISCHER, Joerg WELKE, Jens BLUM, Andreas NECKER, Torsten TUSSING
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Publication number: 20130267374Abstract: 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: ApplicationFiled: April 4, 2013Publication date: October 10, 2013Applicant: ROBERT BOSCH GMBHInventors: Jens BLUM, Tobias HERR
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Publication number: 20130248217Abstract: 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: ApplicationFiled: September 7, 2011Publication date: September 26, 2013Inventors: Jens Blum, Heiko Roehm, Tobias Herr
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Publication number: 20130165291Abstract: 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: ApplicationFiled: December 26, 2012Publication date: June 27, 2013Inventors: Jens BLUM, Tobias HERR
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Publication number: 20130161042Abstract: 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: ApplicationFiled: December 26, 2012Publication date: June 27, 2013Inventors: Jens BLUM, Heiko ROEHM, Tobias HERR
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Publication number: 20130161043Abstract: 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: ApplicationFiled: December 26, 2012Publication date: June 27, 2013Inventors: Jens Blum, Heiko Roehm, Tobias Herr
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Publication number: 20130106209Abstract: 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: ApplicationFiled: March 31, 2011Publication date: May 2, 2013Inventors: Jens Blum, Heiko Roehm, Tobias Herr
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Patent number: 8403336Abstract: 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: GrantFiled: July 25, 2005Date of Patent: March 26, 2013Assignee: Robert Bosch GmbHInventors: Wolfgang Fuchs, Heiko Roehm, Juergen Gairing, Jens Blum
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Patent number: 8403341Abstract: 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: GrantFiled: November 9, 2011Date of Patent: March 26, 2013Assignee: Robert Bosch GmbHInventors: Adolf Zaiser, Jens Blum, Marco Braun, Heiko Roehm, Daniel Grolimund, Katharina Holzer
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Patent number: 8152601Abstract: 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: GrantFiled: February 20, 2008Date of Patent: April 10, 2012Assignee: Robert Bosch GmbHInventors: Adolf Zaiser, Jens Blum, Heiko Roehm