Patents by Inventor Erwin Manschitz
Erwin Manschitz 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: 11945085Abstract: A hand-held power tool, in particular a hammer drill or combination hammer, having a tool fitting for holding a striking and rotating tool on a working axis, an electric motor coupled to a transmission shaft, an impact mechanism, which has a striker that is moved periodically along the working axis, and having a rotary drive, which drives a guide tube carrying the tool fitting in rotation about the working axis, wherein the rotary drive is coupled to the transmission shaft via a rocker lever.Type: GrantFiled: September 3, 2020Date of Patent: April 2, 2024Assignee: Hilti AktiengesellschaftInventors: Manfred Ludwig, Erwin Manschitz, Josef Fünfer
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Publication number: 20220288759Abstract: A hand-held power tool, in particular a hammer drill or combination hammer, having a tool fitting for holding a striking and rotating tool on a working axis, an electric motor coupled to a transmission shaft, an impact mechanism, which has a striker that is moved periodically along the working axis, and having a rotary drive, which drives a guide tube carrying the tool fitting in rotation about the working axis, wherein the rotary drive is coupled to the transmission shaft via a rocker lever.Type: ApplicationFiled: September 3, 2020Publication date: September 15, 2022Inventors: Manfred LUDWIG, Erwin MANSCHITZ, Josef FÜNFER
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Patent number: 11123854Abstract: A handheld power tool has a tool socket (2) to hold a tool (4) along a working axis (11), a motor (5) and a slip clutch (21) having a number of blocking elements. A sensor (27) serves to record a measured signal (28) as the measure of vibrations inside the handheld power tool (1). A band-pass filter (29) has a pass range in which a frequency lies that is equal to the product of the rotational speed of the wheel (22) on the drive side and the number N of blocking elements (24). The measured signal (28) filtered by the band-pass filter (29) is fed to an evaluation unit (30). When the filtered measured signal (28) exceeds a limit value, the evaluation unit (30) reduces the rotational speed of the motor (5).Type: GrantFiled: July 19, 2019Date of Patent: September 21, 2021Assignee: Hilti AktiengesellschaftInventors: Erwin Manschitz, Walter Wissmach
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Patent number: 10751866Abstract: A handheld power tool has a tool socket (2) to hold a tool (4) along a working axis (11), a motor (5) and a slip clutch (21) having a number of blocking elements. A sensor (27) serves to record a measured signal (28) as the measure of vibrations inside the handheld power tool (1). A band-pass filter (29) has a pass range in which a frequency lies that is equal to the product of the rotational speed of the wheel (22) on the drive side and the number N of blocking elements (24). The measured signal (28) filtered by the band-pass filter (29) is fed to an evaluation unit (30). When the filtered measured signal (28) exceeds a limit value, the evaluation unit (30) reduces the rotational speed of the motor (5).Type: GrantFiled: June 25, 2015Date of Patent: August 25, 2020Assignee: Hilti AkitengesellschaftInventors: Erwin Manschitz, Walter Wissmach
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Publication number: 20190337137Abstract: A handheld power tool has a tool socket (2) to hold a tool (4) along a working axis (11), a motor (5) and a slip clutch (21) having a number of blocking elements. A sensor (27) serves to record a measured signal (28) as the measure of vibrations inside the handheld power tool (1). A band-pass filter (29) has a pass range in which a frequency lies that is equal to the product of the rotational speed of the wheel (22) on the drive side and the number N of blocking elements (24). The measured signal (28) filtered by the band-pass filter (29) is fed to an evaluation unit (30). When the filtered measured signal (28) exceeds a limit value, the evaluation unit (30) reduces the rotational speed of the motor (5).Type: ApplicationFiled: July 19, 2019Publication date: November 7, 2019Inventors: Erwin Manschitz, Walter Wissmach
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Patent number: 10414036Abstract: The control method for a hammer drill (1) provides the following steps. During basic operation, the motor (5) rotates at an operating speed for the drilling operation with chiseling action in order to rotationally drive the tool holder (2) and to drive the hammer mechanism (6) with a nominal striking power. The torque coupling (21) is monitored with the aid of a sensor (26). If a disengagement of the torque coupling (21) occurs, the striking power of the hammer mechanism (6) is reduced to below 10% of the nominal striking power during a disengagement of the torque coupling (21), and the torque coupling (21) is driven. When the disengagement of the torque coupling (21) ends, the striking power of the hammer mechanism (6) is increased to the nominal striking power and the torque coupling (21) is driven at the operating speed for the drilling operation with chiseling action.Type: GrantFiled: November 17, 2015Date of Patent: September 17, 2019Assignee: Hilti AktiengesellschaftInventors: Roland Schaer, Antonios Draganis, Peter Hricko, Franz Moessnang, Erwin Manschitz
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Publication number: 20180169847Abstract: A hand-held power tool, in particular a hammer drill or a combined hammer, includes a safety coupling via which torque transmission between a motor shaft and a transmission shaft of the hand-held power tool can be established and interrupted. The safety coupling includes a coupling part at the input end and a coupling part at the output end and can be actuated by a coupling actuator. Mutually complementary catch profiles, in particular similar to a crown gear set, by which the coupling part at the input end and the coupling part at the output end can be interlocked, are arranged on the coupling part at the input end and on the coupling part at the output end.Type: ApplicationFiled: June 28, 2016Publication date: June 21, 2018Applicant: Hilti AktiengesellschaftInventors: Philipp Lorenz, Erwin Manschitz, Azize Cengil
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Publication number: 20180043521Abstract: A hand-held power tool (1) includes a tool holder (2) for holding a tool on a working axis (11) and a motor (5) for rotationally driving the tool holder (2) about the working axis (11). The motor (5) is situated in a power-tool housing (16) and a handle (9) is fastened on the power-tool housing (16) for guiding the hand-held power tool (1) during operation. A rotary motion sensor (15) detects a rotary motion of the power-tool housing (16) about the working axis (11). A monitor (19) ascertains a holding force based on an amplitude of the rotary motion in a frequency range between 0.4 Hz and 4 Hz. A safety device (13) reduces a torque output to the tool holder (2) when the detected rotary motion exceeds a limiting value, the limiting value being set as a function of the holding force.Type: ApplicationFiled: November 17, 2015Publication date: February 15, 2018Inventors: Franz Moessnang, Antonios Draganis, Roland Schaer, Peter Hricko, Erwin Manschitz, Bernd Gillmeier
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Patent number: 9879734Abstract: The torque coupling has a shaft, a hollow shaft and a plurality of levers. The bearings of the levers are non-rotatably connected to the shaft and the levers are spring-loaded so as to be pressed against the hollow shaft. The levers are bent from a steel strip.Type: GrantFiled: November 2, 2010Date of Patent: January 30, 2018Assignee: Hilti AktiengesellschaftInventors: Horst Stroissnigg, Erwin Manschitz, Manfred Ludwig, Werner Kaibach, Manfred Schallert, Franz Moessnang, Ferdinand Kristen
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Publication number: 20170320205Abstract: The control method for a hammer drill (1) provides the following steps. During basic operation, the motor (5) rotates at an operating speed for the drilling operation with chiseling action in order to rotationally drive the tool holder (2) and to drive the hammer mechanism (6) with a nominal striking power. The torque coupling (21) is monitored with the aid of a sensor (26). If a disengagement of the torque coupling (21) occurs, the striking power of the hammer mechanism (6) is reduced to below 10% of the nominal striking power during a disengagement of the torque coupling (21), and the torque coupling (21) is driven. When the disengagement of the torque coupling (21) ends, the striking power of the hammer mechanism (6) is increased to the nominal striking power and the torque coupling (21) is driven at the operating speed for the drilling operation with chiseling action.Type: ApplicationFiled: November 17, 2015Publication date: November 9, 2017Inventors: Roland Schaer, Antonios Draganis, Peter Hricko, Franz Moessnang, Erwin Manschitz
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Publication number: 20170129089Abstract: A handheld power tool has a tool socket (2) to hold a tool (4) along a working axis (11), a motor (5) and a slip clutch (21) having a number of blocking elements. A sensor (27) serves to record a measured signal (28) as the measure of vibrations inside the handheld power tool (1). A band-pass filter (29) has a pass range in which a frequency lies that is equal to the product of the rotational speed of the wheel (22) on the drive side and the number N of blocking elements (24). The measured signal (28) filtered by the band-pass filter (29) is fed to an evaluation unit (30). When the filtered measured signal (28) exceeds a limit value, the evaluation unit (30) reduces the rotational speed of the motor (5).Type: ApplicationFiled: June 25, 2015Publication date: May 11, 2017Inventors: Erwin Manschitz, Walter Wissmach
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Publication number: 20170043465Abstract: A hand-held power tool 1 has a tool socket 2 to hold a tool 4 on a working axis 11, a motor 5 and a pneumatic striking mechanism 6. A driven shaft 7 is coupled to the tool socket 2 in order to rotate the tool around the working axis 11. A slip clutch 24 is arranged in the drive train between the motor 5 and the driven shaft 7. The slip clutch 24 has a disk 25 on the drive side and a disk 26 on the driven side. On a driving ring surface 28 that is in contact with the disk 26 on the driven side, the disk 25 on the drive side has first sectors 33 that have a high friction value as well as second sectors 34 that have a low friction value. On the driven ring surface 29 that is in contact with the driving ring surface 28, the disk 26 on the driven side has third sectors 35 that have a high friction value as well as fourth sectors 36 that have a low friction value.Type: ApplicationFiled: April 1, 2015Publication date: February 16, 2017Inventors: Manfred Schallert, Manfred Ludwig, Erwin Manschitz, Horst Stroissnigg, Werner Kaibach, Franz Moessnang
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Publication number: 20160221172Abstract: A hand-held power tool is disclosed. The hand-held power tool has a drive and a pneumatic percussive mechanism. The percussive mechanism has a hammer movable along a working axis, a driving piston bound to the drive by a connecting rod, and a pneumatic chamber that couples a movement of the hammer to the driving piston. The connecting rod is suspended from the driving piston so as to swivel about a swiveling axis. A sealing ring encloses in a plane a lateral surface of the driving piston. The swiveling axis lies in the plane.Type: ApplicationFiled: September 24, 2014Publication date: August 4, 2016Applicant: Hilti AktiengesellschaftInventors: Steffen GEIGER, Stefan HAMMERSTINGL, Markus HARTMANN, Erwin MANSCHITZ
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Patent number: 9199369Abstract: A pneumatic striking mechanism includes a guide cylinder in which a freely moving piston and an exciter piston are arranged movably along a striking axis. The guide cylinder has a plastic. The striking mechanism includes a pneumatic chamber sealed off by the guide cylinder, by the freely moving piston and by the exciter piston, as well as a drive for periodically moving the exciter piston, as a result of which the freely moving piston is excited to execute a periodical movement between the striking surface and the exciter piston.Type: GrantFiled: April 19, 2010Date of Patent: December 1, 2015Assignee: Hilti AktiengesellschaftInventors: Ferdinand Kristen, Stefan Hammerstingl, Erwin Manschitz, Markus Hartmann
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Patent number: 8356702Abstract: An oscillation damper (3) which is designed for being mounted on a housing (2) of a hand-held power tool (1) and includes an oscillating damping mass (4); and at least one spring (5) located completely, with respect to its axial length, within the damping mass (4) for axially compressively preloading the damping mass (4) against the housing (2) of the power tool (1).Type: GrantFiled: January 30, 2008Date of Patent: January 22, 2013Assignee: Hilti AktiengesellschaftInventors: Erwin Manschitz, Franz Mössnang
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Patent number: 8333251Abstract: A pneumatically striking hand-held power tool is controlled by the following steps. An acceleration (a) along a striking axis (8) of the hand-held power tool (1) is detected. A driving power is reduced if the detected acceleration (a) is greater than a threshold value (A), the threshold value (A) being selected to be greater than maximum acceleration values (a1, a2) that occur on a workpiece during the striking operation of the hand-held power tool (1).Type: GrantFiled: January 28, 2010Date of Patent: December 18, 2012Assignee: Hilti AktiengesellschaftInventors: Holger Cecchin, Erwin Manschitz, Germar Meiendres, Franz Moessnang, Stefan Hammerstingl
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Publication number: 20120252585Abstract: The torque coupling has a shaft, a hollow shaft and a plurality of levers. The bearings of the levers are non-rotatably connected to the shaft and the levers are spring-loaded so as to be pressed against the hollow shaft. The levers are bent from a steel strip.Type: ApplicationFiled: November 2, 2010Publication date: October 4, 2012Applicant: Hilti AktiengesellschaftInventors: Horst Stroissnigg, Erwin Manschitz, Manfred Ludwig, Werner Kaibach, Manfred Schallert, Franz Moessnang, Ferdinand Kristen
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Patent number: 8267189Abstract: A hand-held power tool includes a motor-driven percussion mechanism. The percussion mechanism includes a guide tube (21) and a reciprocating driving member (22) displaceable in the guide tube (21) for driving, via a gas spring, an impact member (23) likewise displaceable in the guide tube (21). The percussion mechanism further includes a motor-driven eccentric wheel (17) rotatable about an axis (D) which is spaced from the percussion mechanism axis (S) in a direction perpendicular to the percussion mechanism axis (S) by a distance (X). A connection rod (29) is eccentrically supported on the eccentric wheel (17) and connected to the driving member (22) for converting a rotational movement of the eccentric wheel (17) into a reciprocating movement of the driving member (22).Type: GrantFiled: June 16, 2008Date of Patent: September 18, 2012Assignee: Hilti AktiengesellschaftInventors: Erwin Manschitz, Reinhard Schulz, Alexander Loeffler
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Publication number: 20100263894Abstract: A pneumatic striking mechanism includes a guide cylinder in which a freely moving piston and an exciter piston are arranged movably along a striking axis. The guide cylinder has a plastic. The striking mechanism includes a pneumatic chamber sealed off by the guide cylinder, by the freely moving piston and by the exciter piston, as well as a drive for periodically moving the exciter piston, as a result of which the freely moving piston is excited to execute a periodical movement between the striking surface and the exciter piston.Type: ApplicationFiled: April 19, 2010Publication date: October 21, 2010Applicant: Hilti AktiengesellschaftInventors: Ferdinand Kristen, Stefan Hammerstingl, Erwin Manschitz, Markus Hartmann
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Patent number: 7802632Abstract: An electrical tool includes a housing, a conductor channel, and a stranded conductor. The housing includes a motor, electronics, and drive gear. The conductor channel has a flexible section and a rigid section. The stranded conductor is in a receptacle of the conductor channel. One end of the stranded conductor is connected to a conductor of a network cable of the electrical tool. Another end of the stranded conductor is conductively connected with a component of the electrical tool.Type: GrantFiled: August 31, 2004Date of Patent: September 28, 2010Assignee: Hilti AktiengesellschaftInventors: Ferdinand Kristen, Erwin Manschitz