Patents by Inventor Helmut Heinzelmann
Helmut Heinzelmann 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: 8281872Abstract: A drill hammer for the three operation modes of drilling, chiseling, and hammer-drilling has a motor with a motor shaft; a gear with an intermediate shaft, a driving gear wheel, a toothed slaving shaft , a shifting hub, and a driven gear wheel; a percussion mechanism with a wobble disk and a wobble gear wheel; and a driven shaft with a driving gear wheel and a drill chuck. The gear is configured to be changed over easily without axial displacement of running gears that mesh with one another so that the drill hammer is more robust, shorter or more compact, and lighter in weight. The drill hammer is thus simply and economically constructed and whose efficiency is not impaired by the gear shifting mechanism.Type: GrantFiled: September 25, 2006Date of Patent: October 9, 2012Assignee: Robert Bosch GmbHInventors: Achim Duesselberg, Andre Ullrich, Helmut Heinzelmann, Thomas Bernhardt, Michael Weiss, Tobias Herr
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Patent number: 8281873Abstract: The invention relates to a hand-held power tool, in particular a hammer drill which has a hammer drive, a rotary drive, a switching device, and a main output element. The switching device has a slide mechanism, which is designed for switching between different operating modes. According to the invention, the slide mechanism has at least one coupling element, which in at least one operating mode is directly coupled to a coupling element, the latter being rotationally fixed to the main output element.Type: GrantFiled: October 16, 2007Date of Patent: October 9, 2012Assignee: Robert Bosch GmbHInventors: Andre Ullrich, Helmut Heinzelmann, Juergen Lennartz, Michael Weiss, Tobias Herr
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Publication number: 20100051303Abstract: The invention relates to a hand-held power tool, in particular a hammer drill which has a hammer drive, a rotary drive, a switching device, and a main output element. The switching device has a slide mechanism, which is designed for switching between different operating modes. According to the invention, the slide mechanism has at least one coupling element, which in at least one operating mode is directly coupled to a coupling element, the latter being rotationally fixed to the main output element.Type: ApplicationFiled: October 16, 2007Publication date: March 4, 2010Inventors: Andre Ullrich, Helmut Heinzelmann, Juergen Lennartz, Michael Weiss, Tobias Herr
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Publication number: 20100038104Abstract: The invention relates to a hand-held machine tool for driving a bit which can be accommodated in a tool holder, with a rotary and/or hammer action. The machine tool includes a drive train which has a drive side associated with a drive unit and a driven side associated with the tool holder. According to the invention, the hand-held machine tool has at least one decoupling unit that is used to form a rotationally elastic coupling between the drive side and the driven side.Type: ApplicationFiled: May 11, 2007Publication date: February 18, 2010Inventors: Otto Baumann, Helmut Heinzelmann, Thomas Bernhardt, Hardy Schmid, Tobias Herr, Willy Braun
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Patent number: 7635032Abstract: A hand-held drill hammer has a housing, a shaft (12) connected to a drive shaft (30), and a lifting bearing (14). The lifting bearing (14) is supported and the shaft (12) for converting rotary motion into a reciprocating motion. In a first switching configuration, a percussion drive connection exists between the shaft (12) and the lifting bearing (14). In a second switching configuration, the percussion drive connection is interrupted. The lifting bearing (14) may be fixed with respect to a reference system of the housing in the second switching configuration.Type: GrantFiled: August 29, 2006Date of Patent: December 22, 2009Assignee: Robert Bosch GmbHInventors: Dietmar Saur, Helmut Heinzelmann
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Patent number: 7597625Abstract: A detent disk for an overload coupling part has a detent disk body configured as a powder-metallurgy produced disk body, the detent disk body has a substantially uniform wall thickness and an inner circumference, and at least one driving device for driving in a rotary manner is provided on the inner circumference and configured as a driving pocket.Type: GrantFiled: June 17, 2005Date of Patent: October 6, 2009Assignee: Robert Bosch GmbHInventors: Juergen Veit, Dietmar Saur, Helmut Heinzelmann
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Publication number: 20080169111Abstract: A hammer drill (10), consisting of a housing (12), accommodating the parts mentioned below and assembled in particular from half shells (13, 14), a motor (16) with an on/off switch (18) and with a motor shaft (22) with motor pinion (24), a gear unit (26) with an intermediate shaft (28), with a drive gear (30), with a splined driving shaft (32), with a shifting sleeve (34) and with an output gear (35), a percussion mechanism (36), in particular with a wobble plate (40), with a wobble gear (38) with wobble finger (42), and with a percussion element (44), an output shaft (46) with a drive gear (48), and a drill chuck (50), wherein the motor (16) meshes with the drive gear (30) of the intermediate shaft (28) via its motor pinion (24), wherein the rotary driving of the wobble plate (40) with the intermediate shaft (28) can be set or stopped via coupling or release of the shifting sleeve (34), in particular with the splined driving shaft, preferably by displacing with shifting means (52), and wherein the rotary driType: ApplicationFiled: September 25, 2006Publication date: July 17, 2008Applicant: Robert Bosch GMBHInventors: Achim Duesselberg, Andre Ullrich, Helmut Heinzelmann, Thomas Bernhardt, Michael Weiss, Tobias Herr
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Publication number: 20080011499Abstract: The invention relates to a hand-held tool, in particular a hammer drill (10a, 10b), comprising a shaft (12) and a lifting control bearing (14a, 14b) which is mounted on the shaft (12a, 12b) and which is used to translate a rotational movement into a lifting movement. According to the invention, a percussion drive connection is arranged between the shaft (12) and the lifting control bearing (14) in at least one of the first switch configurations and the percussion drive connection is interrupted in at least one of the second switch configurations. The hand-held machine comprises a maintaining agent (16a, 16b) which fixes the lifting control bearing (14) to the second switch configuration.Type: ApplicationFiled: August 29, 2006Publication date: January 17, 2008Inventors: Dietmar Saur, Helmut Heinzelmann
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Patent number: 7273112Abstract: An electric power tool has a drive mechanism switchable back and forth among a drilling, a percusion drilling, and a chiseling mode of operation; a drive shaft performing a rotary motion; a percusion mechanism provided with a drive bearing; a serrated sleeve supported axially displaceably in the drive bearing of the percussion mechanism and transmitting a rotary motion of the drive shaft to the drive bearing of the percusion mechanism when it is in an axial position corresponding to the chiseling or percusion drilling modes of operation; and an axially displaceable serrated shaft supported in the drive bearing, so that the serrated sleeve transmits to the serrated shaft the rotary motion of the drive shaft when the serrated shaft is in axial position corresponding to the drilling or percussion drilling modes of operation.Type: GrantFiled: August 30, 2005Date of Patent: September 25, 2007Assignee: Robert Bosch GmbHInventors: Dietmar Saur, Helmut Heinzelmann
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Publication number: 20070151412Abstract: A hand-guided power tool has an impact mechanism and a gear transmission provided to transmit a drive torque to the impact mechanism and including at least one gear with a bevel gearing and at least one additional gear with another gearing supported so that they are rotatable around a common rotation axis.Type: ApplicationFiled: December 27, 2006Publication date: July 5, 2007Inventors: Gerhard Meixner, Helmut Heinzelmann, Michael Weiss
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Publication number: 20070149293Abstract: The present invention relates to a detent disk for an overload coupling, in particular for a machine tool. A detent disk with a shape designed using powder metallurgy is provided. An overload coupling and a method for manufacturing a detent disk are also provided.Type: ApplicationFiled: June 17, 2005Publication date: June 28, 2007Inventors: Juergen Veit, Dietmar Saur, Helmut Heinzelmann
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Publication number: 20060054012Abstract: A hand power tool has a percussion bolt, a hammer barrel receiving the percussion bolt, a sealing element effecting sealing between the percussion bolt and the hammer barrel, a restraining element that retains the sealing element at a predetermined point along the hammer barrel, and a counterpart element fixing the restraining element in a longitudinal direction of the hammer barrel, wherein the restraining element is located on an outer face, toward the hammer barrel, of the sealing element.Type: ApplicationFiled: August 24, 2005Publication date: March 16, 2006Inventors: Otto Baumann, Rolf Mueller, Dietmar Saur, Helmut Heinzelmann
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Publication number: 20060048955Abstract: An electric power tool has a drive mechanism switchable back and forth among a drilling, a percusion drilling, and a chiseling mode of operation; a drive shaft performing a rotary motion; a percusion mechanism provided with a drive bearing; a serrated sleeve supported axially displaceably in the drive bearing of the percussion mechanism and transmitting a rotary motion of the drive shaft to the drive bearing of the percusion mechanism when it is in an axial position corresponding to the chiseling or percusion drilling modes of operation; and an axially displaceable serrated shaft supported in the drive bearing, so that the serrated sleeve transmits to the serrated shaft the rotary motion of the drive shaft when the serrated shaft is in axial position corresponding to the drilling or percussion drilling modes of operation.Type: ApplicationFiled: August 30, 2005Publication date: March 9, 2006Inventors: Dietmar Saur, Helmut Heinzelmann
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Publication number: 20050224243Abstract: The invention relates to a tool receptacle for a hand power tool, in particular for a drill hammer, having a receiving opening (12) for receiving a tool shaft (14) and having a hammering bolt (16), and the tool shaft (14) and/or the hammering bolt (16) has a ready position located between an idling position and a hammering position, and having a lubricant opening (56) for delivering lubricant, which lubricant opening is fixed relative to the hammering bolt (16), and having a lubricant valve (16, 56) with a variable valve position for metering lubricant. It is proposed that the valve position of the lubricant valve (16, 56) be dependent on the ready position of the hammering bolt (16) and/or of the tool shaft (14), between the idling position and the hammering position.Type: ApplicationFiled: June 27, 2003Publication date: October 13, 2005Inventors: Otto Baumann, Rolf Mueller, Dietmar Saur, Helmut Heinzelmann, Thomas Bernhardt, Hardy Schmid
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Patent number: 6854740Abstract: The tool mount has a body (12) with means for housing a tool with grooves, whereby the body (12) is equipped with a damping mechanism (14, 16, 18, 20) with which the tool can be clamped in position in the body (12), and an operating element (24) for unclamping the tool is provided. A wear-resistant tool mount requiring low production expenses has a housing sleeve (34) for the tool. The housing sleeve is inserted in the body (12) and is made of a harder material than the body (12).Type: GrantFiled: August 16, 2001Date of Patent: February 15, 2005Assignee: Robert Bosch GmbHInventors: Otto Baumann, Helmut Heinzelmann, Hardy Schmid
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Publication number: 20030137114Abstract: The tool mount has a body (12) with means for housing a tool with grooves, whereby the body (12) is equipped with a clamping mechanism (14, 16, 18, 20) with which the tool can be clamped in position in the body (12), and an operating element (24) for unclamping the tool is provided.Type: ApplicationFiled: September 16, 2002Publication date: July 24, 2003Inventors: Otto Baumann, Helmut Heinzelmann, Hardy Schmid