Patents by Inventor Helmut Specht
Helmut Specht 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: 20220048154Abstract: Handheld cutoff grinder including a cutting disk (11), a motor housing having a drive unit and a cantilever (16) with a support arm (17) and an arm cover (18). A stop element (41) is provided in the arm cover (18) for the spindle (12), the stop element limiting the movement of the spindle (12) in a plane (48) perpendicular to the axis of rotation (13) during operation.Type: ApplicationFiled: August 28, 2019Publication date: February 17, 2022Inventors: Helmut SPECHT, Stefan TEUFELHART, Guenther VEIK
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Publication number: 20210015328Abstract: A hose coupling system including an inlet fitting, which is to be arranged or is arranged on a vacuum cleaner, and including a tubular connection piece, which is to be connected or is connected to a suction hose, wherein the connection piece is to be inserted into the inlet fitting in the coaxial direction, wherein the hose coupling system has an actuable latching element by means of which the connection piece can be held in the inlet fitting in a form-fitting manner and can be released again as required.Type: ApplicationFiled: March 18, 2019Publication date: January 21, 2021Inventors: Sonya WÖRZ, Hans RUPPRECHT, Xaver HANSLMEIER, Helmut SPECHT, John Van TAACK-TRAKRANEN
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Patent number: 10821571Abstract: A handheld, hand-guided cutting-off machine (10), which includes a rotating cutting-off wheel, a supporting housing part (36), an output shaft, which is rotatably supported around an output axis (40), a drive motor, a transmission mechanism (19), which connects the drive motor to the output shaft, a flange and a safety guard (24), which covers the cutting-off wheel over a covering area. The cutting-off wheel is rotatably fixedly mounted on the output shaft with the aid of the flange and surrounded by the safety guard (24), which is pivotable around a pivot axis. The safety guard (24), the supporting housing part (36) and the transmission mechanism (19) have maximum distances from the output axis (40) over an outcut angle (?), which are less than or equal to half the flange diameter of the flange.Type: GrantFiled: November 15, 2016Date of Patent: November 3, 2020Assignee: Hilti AktiengesellschaftInventors: Ralf Greitmann, Guenther Veik, Helmut Specht
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Patent number: 10543621Abstract: A water supply apparatus for the supply of water to a machine tool, including a water pump, a water accumulator device, a suction line, a supply line and a valve device reversibly adjustable into a first and a second position. The water pump is positioned downstream of the valve device. A first connecting line, a second connecting line and a return line are provided. Here, in the first position, the first connecting line, the second connecting line and the return line are connected to one another such that water can be conveyed from the water pump, from the first connecting line, from the second connecting line, from at least a part of the suction line and from at least a part of the supply line into the return line, and, in the second position, the first connecting line, the second connecting line and the return line are not connected to one another.Type: GrantFiled: October 15, 2015Date of Patent: January 28, 2020Assignee: Hilti AktiengesellschaftInventor: Helmut Specht
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Publication number: 20180345456Abstract: A handheld, hand-guided cutting-off machine, which includes a rotating cutting-off wheel, a supporting housing part (36), an output shaft (20), which is rotatably supported around an output axis (40), a drive motor, a transmission mechanism (19), which connects the drive motor to the output shaft (20), a flange (41) and a safety guard (24), which covers the cutting-off wheel over a covering area (25). The cutting-off wheel is rotatably fixedly mounted on the output shaft (20) with the aid of the flange (41) and surrounded by the safety guard (24). The safety guard (24) is pivotable around a pivot axis, and the pivot axis is displaced by a distance from the output axis (40) of the output shaft (20).Type: ApplicationFiled: November 16, 2016Publication date: December 6, 2018Inventors: Ralf GREITMANN, Guenther VEIK, Helmut SPECHT
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Publication number: 20180345444Abstract: A handheld, hand-guided cutting-off machine (10), which includes a rotating cutting-off wheel, a supporting housing part (36), an output shaft, which is rotatably supported around an output axis (40), a drive motor, a transmission mechanism (19), which connects the drive motor to the output shaft, a flange and a safety guard (24), which covers the cutting-off wheel over a covering area. The cutting-off wheel is rotatably fixedly mounted on the output shaft with the aid of the flange and surrounded by the safety guard (24), which is pivotable around a pivot axis. The safety guard (24), the supporting housing part (36) and the transmission mechanism (19) have maximum distances from the output axis (40) over an outcut angle (?), which are less than or equal to half the flange diameter of the flange.Type: ApplicationFiled: November 15, 2016Publication date: December 6, 2018Inventors: Ralf GREITMANN, Guenther VEIK, Helmut SPECHT
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Publication number: 20180281086Abstract: A handheld, hand-guided cutting-off machine, which includes a rotating cutting-off wheel, a supporting housing part (36), an output shaft, which is rotatably supported around an output axis (40), a drive motor, a transmission mechanism, which connects the drive motor to the output shaft, a flange (41) and a safety guard (24), which covers the cutting-off wheel over a covering area. The cutting-off wheel is rotatably fixedly mounted on the output shaft with the aid of the flange (41) and surrounded by the safety guard (24). The safety guard (24), the supporting housing part (36) and the transmission mechanism have maximum distances from the output axis (40) over an outcut angle (?), which are smaller than or equal to half the flange diameter (df).Type: ApplicationFiled: November 15, 2016Publication date: October 4, 2018Inventors: Ralf GREITMANN, Helmut SPECHT, Guenther VEIK, Dragomir Ljubojevic
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Patent number: 9969104Abstract: A method for controlling a water supply system for use with a machine tool is disclosed. The water supply system includes a housing with an interface for supplying electrical energy, a water tank, a line, a pump device, a current-measuring device, a water-pressure-measuring device, and a control device. The method includes activating the pump device if the machine tool is connected to the interface and the motor current of the machine tool exceeds a predetermined threshold value, and deactivating the pump device if the machine tool is connected and the motor current undershoots a predetermined threshold value; or activating the pump device if the machine tool is not connected and the water pressure in the line undershoots a predetermined threshold value and deactivating the pump device if the machine tool is not connected and the water pressure exceeds a predetermined threshold value.Type: GrantFiled: June 24, 2015Date of Patent: May 15, 2018Assignee: Hilti AktiengesellschaftInventors: Eduard Sever, Hans Rupprecht, Helmut Specht
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Publication number: 20170232639Abstract: A water supply apparatus for the supply of water to a machine tool, including a water pump, a water accumulator device, a suction line, a supply line and a valve device reversibly adjustable into a first and a second position. The water pump is positioned downstream of the valve device. A first connecting line, a second connecting line and a return line are provided. Here, in the first position, the first connecting line, the second connecting line and the return line are connected to one another such that water can be conveyed from the water pump, from the first connecting line, from the second connecting line, from at least a part of the suction line and from at least a part of the supply line into the return line, and, in the second position, the first connecting line, the second connecting line and the return line are not connected to one another.Type: ApplicationFiled: October 15, 2015Publication date: August 17, 2017Inventor: Helmut Specht
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Publication number: 20170136656Abstract: A method for controlling a water supply system to be used with a machine tool, in particular a core boring device, is disclosed. The water supply system includes a water reservoir for storing water, a line for transporting water from the water reservoir to the machine tool, where the line contains a first section and a second section, a pump device for pumping water from the water reservoir to the machine tool, a signaling device, at least one sensor for measuring at least one parameter of the pump device, and a controller. The method includes transmitting a signal if at least one parameter of the pump device falls below a specified threshold for a specified duration and at least one specified water quantity for supplying the machine tool is available.Type: ApplicationFiled: June 24, 2015Publication date: May 18, 2017Applicant: Hilti AktiengesellschaftInventors: Helmut SPECHT, Hans RUPPRECHT, Eduard SEVER
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Publication number: 20170129138Abstract: A method for controlling a water supply system for use with a machine tool is disclosed. The water supply system includes a housing with an interface for supplying electrical energy, a water tank, a line, a pump device, a current-measuring device, a water-pressure-measuring device, and a control device. The method includes activating the pump device if the machine tool is connected to the interface and the motor current of the machine tool exceeds a predetermined threshold value, and deactivating the pump device if the machine tool is connected and the motor current undershoots a predetermined threshold value; or activating the pump device if the machine tool is not connected and the water pressure in the line undershoots a predetermined threshold value and deactivating the pump device if the machine tool is not connected and the water pressure exceeds a predetermined threshold value.Type: ApplicationFiled: June 24, 2015Publication date: May 11, 2017Applicant: Hilti AktiengesellschaftInventors: Eduard SEVER, Hans RUPPRECHT, Helmut SPECHT
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Publication number: 20150298354Abstract: A power tool (10) for processing a workpiece (23), including a processing tool (12) that can be rotated in a rotational direction (14) around an axis of rotation (15) by a drive (13), a protective hood (25) that surrounds the processing tool (12), at least partially, and a spraying device (11) with a first spray nozzle (37) and a pump (36) that is connected to the first spray nozzle (37) via a first connection line (38), whereby the pump (36) generates a minimum pressure of 5 bar in the first connection line (38).Type: ApplicationFiled: November 19, 2013Publication date: October 22, 2015Inventors: Ralf Greitmann, Oliver Ohlendorf, Ralf Meixner, Helmut Specht
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Publication number: 20150298311Abstract: A handheld, gasoline-powered power tool (10) includes a tool (12) in the front section of the power tool (10), a first handle (14) in a center upper section of the power tool (10) and a second handle (20) in a rear section of the power tool (10). In addition, the power tool (10) includes s a footrest plate (28) located in the center lower section of the power tool (10), the footrest plate (28) offering a defined foot placement surface so that the user can clearly see where and how to hold the power tool (10) only with the foot.Type: ApplicationFiled: October 2, 2013Publication date: October 22, 2015Inventors: Ralf Meixner, Guenther Veik, Dragomir Ljubojevic, Helmut Specht
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Publication number: 20070235950Abstract: A chuck for a rotary and/or percussion power tool includes a rotatable sleeve-shaped base body (1), and at least two wear-resistant guide shells (6, 7) located within the base body and connected with the base body (1) for joint rotation therewith and having projecting radially inwardly entraining elements, with at least one of the at least two guide shells (6, 7) being radially displaceable in the base body (1) within certain limits and forming a projecting radially inwardly locking member (9).Type: ApplicationFiled: April 9, 2007Publication date: October 11, 2007Inventors: Michael Biedermann, Vera Nuebel, Oswin Burtscher, Udo Hauptmann, Markus Hartmann, Matthias Kuemmerle, Rainer Kussmaul, Helmut Specht, Erwin Manschitz
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Publication number: 20070024013Abstract: A chuck for a percussively driven working tool includes at least one radially displaceable, locking member (3) and a locking element (5, 6) for blocking radial displacement the at least one locking member outwardly. The locking member has a locking surface (4) located radially adjacent to the at least one locking member (3) and formed as a radially damping surface.Type: ApplicationFiled: July 27, 2006Publication date: February 1, 2007Inventors: Udo Hauptmann, Helmut Specht, Alexander Loeffler