Patents by Inventor Uto Plank

Uto Plank 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: 20230311288
    Abstract: An electropneumatic impact mechanism for an electric hand-held power tool, in particular a hammer drill and/or chipping hammer, wherein the impact mechanism has a transmission housing, a guide tube arranged at least partially in the transmission housing, an exciter piston that is movable in the axial direction in the guide tube, a connecting rod coupled to the exciter piston, and an eccentric wheel which is coupled to the connecting rod on one side and is mounted so as to be rotatable with respect to the transmission housing on the other side, wherein the impact mechanism has a bearing body on which the eccentric wheel is mounted rotatably by means of a pair of plain bearings.
    Type: Application
    Filed: June 15, 2021
    Publication date: October 5, 2023
    Inventors: Ernst-Rudolf LÜBKERT, Uto PLANK, Karin GROTH
  • Publication number: 20230210324
    Abstract: A dust collecting device for a power tool, the dust collecting device having a lamella filter, a rotatable shaft and a lamella holder. In the collecting container of the dust collecting device, the lamellae of the filter can be set in an axial movement by a rotary movement of the shaft which is mediated by the lamella holder, which is interrupted when a first profile of the shaft and a second profile of the lamella holder are moved with respect to each other and are not in engagement with each other. This enables the lamellae to return to their original position, the return of the lamellae to this original position causing the lamellae to vibrate, which leads to the filter being cleaned. A power tool which can have a proposed dust collecting device, as well as a method for operating a power tool and for cleaning a filter is also provided.
    Type: Application
    Filed: June 8, 2021
    Publication date: July 6, 2023
    Inventor: Uto PLANK
  • Publication number: 20230200609
    Abstract: A dust collecting device for a power tool, the dust collecting device having a lamella filter and a rotatable shaft. In the collecting container of the dust collecting device, the lamellae of the filter can be set in an axial movement by a rotary movement of the shaft which is interrupted when the filter lamellae arrive in the region of release of the shaft. The release enables the lamellae to return to their original position, the return of the lamellae to this original position causing the lamellae to vibrate, which leads to the filter being cleaned. A power tool which has a proposed dust collecting device, as well as a method for operating a power tool and for cleaning a filter is also provided.
    Type: Application
    Filed: June 8, 2021
    Publication date: June 29, 2023
    Inventor: Uto PLANK
  • Publication number: 20230150103
    Abstract: An electropneumatic impact mechanism for an electric hand-held power tool, in particular a hammer drill and/or chipping hammer, wherein the impact mechanism has a transmission housing, a guide tube arranged at least partially in the transmission housing, an exciter piston that is movable in the guide tube, a connecting rod coupled to the exciter piston, and an eccentric wheel which is designed as an externally toothed gearwheel and is coupled to the connecting rod on one side and is mounted so as to be rotatable with respect to the transmission housing about an axis of rotation on the other side, an axial gap, preferably for optionally receiving at least part of a lubrication space separating element, is provided between an eccentric wheel surface facing the connecting rod and a connecting rod surface facing the eccentric wheel.
    Type: Application
    Filed: April 7, 2021
    Publication date: May 18, 2023
    Inventors: Ernst-Rudolf LÜBKERT, Uto PLANK, Jochen ERHARDT
  • Publication number: 20230142832
    Abstract: An electric hand-held power tool, in particular a hammer drill and/or chipping hammer, having an electropneumatic impact mechanism which has a transmission housing, a guide tube arranged at least partially in the transmission housing, an exciter piston that is movable in an axial direction in the guide tube, a connecting rod coupled to the exciter piston, and an eccentric wheel which is coupled to the connecting rod on one side and is mounted so as to be rotatable with respect to the transmission housing via an end plate of the transmission housing on the other side, wherein the transmission housing is subdivided at least into a main shell and a cover shell separate from the main shell, such that the guide tube is braced against the main shell at least partially by the cover shell.
    Type: Application
    Filed: March 25, 2021
    Publication date: May 11, 2023
    Inventors: Ernst-Rudolf LÜBKERT, Karin GROTH, Uto PLANK, Manuel ROSENZWEIG, Andres WELLMANN JELIC
  • Patent number: 9067312
    Abstract: The tool holder according to the invention for a chipping hammer has a tool receptacle for receiving a tool and a tool securing device for securing the tool in the tool receptacle. The tool securing device provides a shaft having an eccentrically arranged mandrel and at least one end piece and a bar having at least one eye in which the end piece engages in a form-fitting manner. The tool securing device is pivotable into at least one first position for inserting and removing the tool and into at least one second position for securing the tool. The eye has a non-circular cross-section.
    Type: Grant
    Filed: January 21, 2010
    Date of Patent: June 30, 2015
    Assignee: Hilti Aktiengesellschaft
    Inventors: Olaf Koch, Alexander Buchenau, Stefan Hammerstingl, Matthias Keith, Uto Plank
  • Patent number: 8342260
    Abstract: A portable hand-held power tool (2), especially in the form of a drilling or chisel hammer, includes a drive assembly (8) located in the tool housing (10) for driving a tool spindle (4) along an operational axis (A), a first handle (16) which is rotatable around a first pivotal axis (S1) by a first handle suspension (22), a second handle (20) located on the opposite sides (14.1, 14.2) of the housing which is rotatable around a second pivotal axis (S2) by a second handle suspension (24), and spring elements for retaining the handles (16, 20) in their initial position, with the first and second handle suspensions (22, 24) extending partially circumferentially about the drive assembly (8).
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: January 1, 2013
    Assignee: Hilti Aktiengesellschaft
    Inventors: Alexander Buchenau, Uto Plank, Stefan Hammerstingl
  • Publication number: 20120038119
    Abstract: The tool holder according to the invention for a chipping hammer has a tool receptacle for receiving a tool and a tool securing device for securing the tool in the tool receptacle. The tool securing device provides a shaft having an eccentrically arranged mandrel and at least one end piece and a bar having at least one eye in which the end piece engages in a form-fitting manner. The tool securing device is pivotable into at least one first position for inserting and removing the tool and into at least one second position for securing the tool. The eye has a non-circular cross-section.
    Type: Application
    Filed: June 21, 2010
    Publication date: February 16, 2012
    Applicant: Hilti Aktiengesellschaft
    Inventors: Olaf Koch, Alexander Buchenau, Stefan Hammerstingl, Matthias Keith, Uto Plank
  • Patent number: 7878264
    Abstract: A hand-held power tool includes two vibration-damped handles (21), two handle attachment axles (31) for securing the two handles (21) on the tool outer housing (12), respectively, and extending at an angle to respective longitudinal axes (23) of respective handles (21), each handle attachment axle being surrounded, at least in some areas, by the mounting section (24) of the respective handle (21), a damping sleeve (31) formed of an elastic material and provided between the mounting section (24) of the respective handle (21) and the respective handle attachment axle (30), with the damping sleeve (31) forming a first damping element, and a damping body (36) provided on a free end (26) of each handle (21) and forming a second damping element and having an extension (D) in a radial, with respect to the handle longitudinal axis, direction that is greater than a minimal radial extension (T) of the handle (21) at its free, second end.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: February 1, 2011
    Assignee: Hilti Aktiengesellschaft
    Inventors: Olaf Koch, Alexander Buchenau, Vera Nuebel, Uto Plank, Stefan Hammerstingl
  • Patent number: 7868263
    Abstract: An electrical hand-held power tool includes an assembly (2) vibrating along a vibration axis (A) during operation of the power tool, at least one, transversely projecting, vibration-decoupled pivotal side handle (3), a manual switch (4) having an actuation element (5) arranged in the side handle (3) and switchingly connectable with at least one sensor switch (8) which is located in the assembly (2) in vicinity of the handle pivot point (G), by a switching rod (7) having a switching element (6) and being pivotally supported on the side handle at a switching pivot point (S) spaced from the handle pivot point (G) and from the vibration axis (A).
    Type: Grant
    Filed: August 14, 2008
    Date of Patent: January 11, 2011
    Assignee: Hilti Aktiengesellschaft
    Inventors: Stefan Hammerstingl, Holger Cecchin, Dieter Kraus, Johann Augustin, Uto Plank
  • Publication number: 20090120770
    Abstract: An electrical hand-held power tool includes an assembly (2) vibrating along a vibration axis (A) during operation of the power tool, at least one, transversely projecting, vibration-decoupled pivotal side handle (3), a manual switch (4) having an actuation element (5) arranged in the side handle (3) and switchingly connectable with at least one sensor switch (8) which is located in the assembly (2) in vicinity of the handle pivot point (G), by a switching rod (7) having a switching element (6) and being pivotally supported on the side handle at a switching pivot point (S) spaced from the handle pivot point (G) and from the vibration axis (A).
    Type: Application
    Filed: August 14, 2008
    Publication date: May 14, 2009
    Inventors: Stefan Hammerstingl, Holger Cecchin, Dieter Kraus, Johann Augustin, Uto Plank
  • Publication number: 20090032276
    Abstract: A hand-held power tool includes two vibration-damped handles (21), two handle attachment axles (31) for securing the two handles (21) on the tool outer housing (12), respectively, and extending at an angle to respective longitudinal axes (23) of respective handles (21), each handle attachment axle being surrounded, at least in some areas, by the mounting section (24) of the respective handle (21), a damping sleeve (31) formed of an elastic material and provided between the mounting section (24) of the respective handle (21) and the respective handle attachment axle (30), with the damping sleeve (31) forming a first damping element, and a damping body (36) provided on a free end (26) of each handle (21) and forming a second damping element and having an extension (D) in a radial, with respect to the handle longitudinal axis, direction that is greater than a minimal radial extension (T) of the handle (21) at its free, second end.
    Type: Application
    Filed: July 24, 2008
    Publication date: February 5, 2009
    Inventors: Olaf Koch, Alexander Buchenau, Vera Nuebel, Uto Plank, Stefan Hammerstingl
  • Publication number: 20070144750
    Abstract: A portable hand-held power tool (2), especially in the form of a drilling or chisel hammer, includes a drive assembly (8) located in the tool housing (10) for driving a tool spindle (4) along an operational axis (A), a first handle (16) which is rotatable around a first pivotal axis (S1) by a first handle suspension (22), a second handle (20) located on the opposite sides (14.1, 14.2) of the housing which is rotatable around a second pivotal axis (S2) by a second handle suspension (24), and spring elements for retaining the handles (16, 20) in their initial position, with the first and second handle suspensions (22, 24) extending partially circumferentially about the drive assembly (8).
    Type: Application
    Filed: December 15, 2006
    Publication date: June 28, 2007
    Inventors: Alexander Buchenau, Uto Plank, Stefan Hammerstingl
  • Publication number: 20070024012
    Abstract: A chuck for a mechanized, at least partially percussively driven, along a percussion axis (A), percussion tool (2), includes a tool guide (3), a retaining stirrup (5) having at least one stirrup arm (6) which is supported in a drag bearing (7) for a pivotal movement about a pivot axis (S) extending transverse to the percussion axis (A) and at least one elastomeric insert (B) provided between the tool guide (3) and the retaining stirrup (5).
    Type: Application
    Filed: July 26, 2006
    Publication date: February 1, 2007
    Inventors: Stefan Hammerstingl, Uto Plank
  • Patent number: 6659473
    Abstract: A chuck for a percussion hand-held power tool including a coupling sleeve (3) for receiving a working tool and having two diametrically opposite, slot-shaped, radial openings (4, 4′) in which two locking members (5) radially and axially displace a locking sleeve 6 surrounding the coupling sleeve (3) and the locking members (5), and a spring-biased push-sleeve (8) formlockingly cooperating with the locking members (5), with the locking members (5) being supported against the inner surface (7) of the locking sleeve (6), extending into an interior of the coupling sleeve (3), and having each a radial dimension greater than a thickness of the coupling sleeve wall and a width decreasing toward a chuck axis (A).
    Type: Grant
    Filed: August 29, 2001
    Date of Patent: December 9, 2003
    Assignee: Hilti Aktiengesellschaft
    Inventors: Armin Below, Uto Plank, Erwin Manschitz, Josef Anzinger, Harald Geiger
  • Patent number: 6543789
    Abstract: A chuck for receiving a tool shank of a boring tool and including radially displaceable engagement members (5) formlockingly engageable in the radial recesses (3) formed in the clamp region of the tool shank, an axially displaceable control sleeve (6) for radially displacing the engagement members between their engagement and release positions, and a resilient holding member (8) arranged between the control sleeve (6) and the clamp region of the tool shank and having a detent element (9) for preventing displacement of the control sleeve into its locking position (7) from its release position (10) into which the control sleeve was displaced upon insertion of the boring tool.
    Type: Grant
    Filed: May 17, 2001
    Date of Patent: April 8, 2003
    Assignee: Hilti Aktiengesellschaft
    Inventors: Jens Frenzel, Uto Plank, Helmut Nussrainer
  • Publication number: 20030006566
    Abstract: A chuck for a percussion hand-held power tool including a coupling sleeve (3) for receiving a working tool and having two diametrically opposite, slot-shaped, radial openings (4, 4′) in which two locking members (5) radially and axially displace a locking sleeve 6 surrounding the coupling sleeve (3) and the locking members (5), and a spring-biased push-sleeve (8) formlockingly cooperating with the locking members (5), with the locking members (5) being supported against the inner surface (7) of the locking sleeve (6), extending into an interior of the coupling sleeve (3), and having each a radial dimension greater than a thickness of the coupling sleeve wall and a width decreasing toward a chuck axis (A).
    Type: Application
    Filed: August 29, 2001
    Publication date: January 9, 2003
    Inventors: Armin Below, Uto Plank, Erwin Manschitz, Josef Anzinger, Harald Geiger
  • Patent number: 6467555
    Abstract: A percussion mechanism for an electrical hand-held power tool including a guide tube, a percussion piston (4) axially displaceable in the guide tube (2), an anvil (5) for impacting a working tool and axially displaceable together with the percussion piston (4), a gas spring (1) provided on an axial side of the percussion piston (4) remote from the anvil (5), an air channel (9) for aeration of the gas spring (1) and extending between an axial region of the gas spring (1) and an axial region of the anvil (5) outwardly of the inner surface of the guide tube (2), and a ventilation opening (8) for communicating the air channel (9) with a surrounding environment and which is closed by the anvil (5) in its operational position.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: October 22, 2002
    Assignee: Hilti Aktiengesellschaft
    Inventors: Uto Plank, Martin Richter
  • Publication number: 20020108766
    Abstract: A percussion mechanism for an electrical hand-held power tool including a guide tube, a percussion piston (4) axially displaceable in the guide tube (2), an anvil (5) for impacting a working tool and axially displaceable together with the percussion piston (4), a gas spring (1) provided on an axial side of the percussion piston (4) remote from the anvil (5), an air channel (9) for aeration of the gas spring (1) and extending between an axial region of the gas spring (1) and an axial region of the anvil (5) outwardly of the inner surface of the guide tube (2), and a ventilation opening (8) for communicating the air channel (9) with a surrounding environment and which is closed by the anvil (5) in its operational position.
    Type: Application
    Filed: January 23, 2002
    Publication date: August 15, 2002
    Inventors: Uto Plank, Martin Richter
  • Publication number: 20020067008
    Abstract: A chuck for receiving a tool shank of a boring tool and including radially displaceable engagement members (5) formlockingly engageable in the radial recesses (3) formed in the clamp region of the tool shank, an axially displaceable control sleeve (6) for radially displacing the engagement members between their engagement and release positions, and a resilient holding member (8) arranged between the control sleeve (6) and the clamp region of the tool shank and having a detent element (9) for preventing displacement of the control sleeve into its locking position (7) from its release position (10) into which the control sleeve was displaced upon insertion of the boring tool.
    Type: Application
    Filed: May 17, 2001
    Publication date: June 6, 2002
    Inventors: Jens Frenzel, Uto Plank, Helmut Nussrainer