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).
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Publication number: 20230311288Abstract: 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: ApplicationFiled: June 15, 2021Publication date: October 5, 2023Inventors: Ernst-Rudolf LÜBKERT, Uto PLANK, Karin GROTH
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Publication number: 20230210324Abstract: 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: ApplicationFiled: June 8, 2021Publication date: July 6, 2023Inventor: Uto PLANK
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Publication number: 20230200609Abstract: 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: ApplicationFiled: June 8, 2021Publication date: June 29, 2023Inventor: Uto PLANK
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Publication number: 20230150103Abstract: 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: ApplicationFiled: April 7, 2021Publication date: May 18, 2023Inventors: Ernst-Rudolf LÜBKERT, Uto PLANK, Jochen ERHARDT
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Publication number: 20230142832Abstract: 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: ApplicationFiled: March 25, 2021Publication date: May 11, 2023Inventors: Ernst-Rudolf LÜBKERT, Karin GROTH, Uto PLANK, Manuel ROSENZWEIG, Andres WELLMANN JELIC
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Patent number: 9067312Abstract: 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: GrantFiled: January 21, 2010Date of Patent: June 30, 2015Assignee: Hilti AktiengesellschaftInventors: Olaf Koch, Alexander Buchenau, Stefan Hammerstingl, Matthias Keith, Uto Plank
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Patent number: 8342260Abstract: 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: GrantFiled: December 15, 2006Date of Patent: January 1, 2013Assignee: Hilti AktiengesellschaftInventors: Alexander Buchenau, Uto Plank, Stefan Hammerstingl
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Publication number: 20120038119Abstract: 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: ApplicationFiled: June 21, 2010Publication date: February 16, 2012Applicant: Hilti AktiengesellschaftInventors: Olaf Koch, Alexander Buchenau, Stefan Hammerstingl, Matthias Keith, Uto Plank
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Patent number: 7878264Abstract: 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: GrantFiled: July 24, 2008Date of Patent: February 1, 2011Assignee: Hilti AktiengesellschaftInventors: Olaf Koch, Alexander Buchenau, Vera Nuebel, Uto Plank, Stefan Hammerstingl
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Patent number: 7868263Abstract: 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: GrantFiled: August 14, 2008Date of Patent: January 11, 2011Assignee: Hilti AktiengesellschaftInventors: Stefan Hammerstingl, Holger Cecchin, Dieter Kraus, Johann Augustin, Uto Plank
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Publication number: 20090120770Abstract: 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: ApplicationFiled: August 14, 2008Publication date: May 14, 2009Inventors: Stefan Hammerstingl, Holger Cecchin, Dieter Kraus, Johann Augustin, Uto Plank
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Publication number: 20090032276Abstract: 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: ApplicationFiled: July 24, 2008Publication date: February 5, 2009Inventors: Olaf Koch, Alexander Buchenau, Vera Nuebel, Uto Plank, Stefan Hammerstingl
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Publication number: 20070144750Abstract: 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: ApplicationFiled: December 15, 2006Publication date: June 28, 2007Inventors: Alexander Buchenau, Uto Plank, Stefan Hammerstingl
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Publication number: 20070024012Abstract: 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: ApplicationFiled: July 26, 2006Publication date: February 1, 2007Inventors: Stefan Hammerstingl, Uto Plank
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Patent number: 6659473Abstract: 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: GrantFiled: August 29, 2001Date of Patent: December 9, 2003Assignee: Hilti AktiengesellschaftInventors: Armin Below, Uto Plank, Erwin Manschitz, Josef Anzinger, Harald Geiger
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Patent number: 6543789Abstract: 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: GrantFiled: May 17, 2001Date of Patent: April 8, 2003Assignee: Hilti AktiengesellschaftInventors: Jens Frenzel, Uto Plank, Helmut Nussrainer
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Publication number: 20030006566Abstract: 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: ApplicationFiled: August 29, 2001Publication date: January 9, 2003Inventors: Armin Below, Uto Plank, Erwin Manschitz, Josef Anzinger, Harald Geiger
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Patent number: 6467555Abstract: 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: GrantFiled: January 23, 2002Date of Patent: October 22, 2002Assignee: Hilti AktiengesellschaftInventors: Uto Plank, Martin Richter
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Publication number: 20020108766Abstract: 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: ApplicationFiled: January 23, 2002Publication date: August 15, 2002Inventors: Uto Plank, Martin Richter
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Publication number: 20020067008Abstract: 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: ApplicationFiled: May 17, 2001Publication date: June 6, 2002Inventors: Jens Frenzel, Uto Plank, Helmut Nussrainer