Patents by Inventor Wolfgang Duernegger
Wolfgang Duernegger 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: 11485005Abstract: A handheld power tool having a drive driving a motor shaft, which is accommodated in a power tool housing, in which at least one air inlet covered by a dust protection element is formed, and having a tool interface for connecting a tool. The dust protection element is pushed onto the power tool housing in an insertion direction and is secured on the power tool housing.Type: GrantFiled: June 10, 2019Date of Patent: November 1, 2022Assignee: C. & E. Fein GmbHInventors: Wolfgang Duernegger, Horst Fahrner
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Publication number: 20210394329Abstract: A power tool, in particular an angle grinder, having a drive motor accommodated in a housing which drives a rotor shaft, a tool spindle comprising a tool holder which is preferentially connected to the rotor shaft in a power-transmitting manner by a gearing, as well as a control switch for activating the drive motor, wherein the control switch comprises a first switching element which is pivotably mounted on the housing about a pivot axis between a first switch position for switching on the drive motor and a second switch position for switching off the drive motor, and a second switching element which is rotatable about a rotational axis between a locked position which blocks the first switching element from moving into the first switch position and a release position which enables the first switching element to move into the first switch position.Type: ApplicationFiled: June 18, 2021Publication date: December 23, 2021Inventors: Wolfgang DUERNEGGER, Tobias HOKENMAIER
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Patent number: 11167388Abstract: A gearhead for a handheld power tool for machining workpieces, having a housing in which an output that can be connected to a drive of a handheld power tool is accommodated, and also having a tool shaft to which a tool can be coupled, wherein a braking device that can be moved between a braking position and a release position and that acts upon the tool shaft is provided for braking of the tool shaft. A switching device is provided that can be moved between a first switching position, in which the tool shaft is connected to the output in a power transmitting manner and in which the braking device is transferred into the release position, and a second switching position, in which the tool shaft is decoupled from the output and in which the braking device is transferred into the braking position.Type: GrantFiled: June 26, 2019Date of Patent: November 9, 2021Assignee: C. & E. Fein GmbHInventor: Wolfgang Duernegger
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Publication number: 20210031327Abstract: A gear head for a hand-held power tool for machining workpieces, in particular for an angle grinder. The gear head including a gear plate, a housing closable by the gear plate, in which a power take-off is accommodated, which is connectable to a drive of the hand-held power tool, the power take-off including a tool shaft protruding from the gear plate, which is at least partially surrounded by a safety guard fastenable to a gear flange of the housing. A securing lever locks the safety guard on the gear flange, the securing lever being adjustable around a pivot axis between a first position, in which the safety guard is rotatably fixedly connected to the gear flange and a second position, in which the safety guard is rotatable with respect to the gear flange against a force of a restoring element acting in a direction of the first position.Type: ApplicationFiled: July 29, 2020Publication date: February 4, 2021Applicant: C. & E. Fein GmbHInventors: Wolfgang DUERNEGGER, Tobias HOKENMAIER
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Patent number: 10840772Abstract: A hand held machine tool for machining workpieces, comprising a housing in which a motor driving a rotor shaft is accommodated, and having an air guide region formed in the housing for supplying cooling air to the motor along a main flow direction oriented substantially parallel to the motor longitudinal axis. The air guidance region is limited at one end by at least one air inlet and at the other end by at least one air outlet for discharging the cooling air from the housing. A separator is arranged in the air guide region for dividing the cooling air into an outer partial air flow flowing around the outer circumference of the motor and into an inner partial air flow flowing through the motor. The separator is formed such that a degree of contamination of the outer partial air flow is greater than a degree of contamination of the inner partial air flow.Type: GrantFiled: April 3, 2019Date of Patent: November 17, 2020Assignee: C. & E. Fein GmbHInventor: Wolfgang Duernegger
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Patent number: 10667441Abstract: An electronic unit for a hand-held power tool, having a mounting frame having an accommodation space into which a circuit board carrying a plurality of electronic components is inserted and at least one heat sink for the heat dissipation of waste heat arising at the electronic components. A slot section with at least one insertion slot, oriented perpendicular to the printed circuit board, for mounting an electronic component along a direction of insertion is formed on the mounting frame. The at least one heat sink is associated with the slot section.Type: GrantFiled: May 6, 2019Date of Patent: May 26, 2020Assignee: C&E Fein GmbHInventors: Christoph Wohlfrom, Wolfgang Duernegger
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Patent number: 10562169Abstract: A hand-guided machine tool is provided, in particular a hand-guided electric power tool, having a housing, whereon a grip part is provided which projects from a stop surface at one end of the housing, wherein the stop surface protrudes laterally with respect to the grip part at all sides and merges into the grip part via a preferably concave curvature.Type: GrantFiled: October 25, 2016Date of Patent: February 18, 2020Assignee: C. & E. Fein GmbHInventor: Wolfgang Duernegger
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Publication number: 20190389020Abstract: A gearhead for a handheld power tool for machining workpieces, having a housing in which an output that can be connected to a drive of a handheld power tool is accommodated, and also having a tool shaft to which a tool can be coupled, wherein a braking device that can be moved between a braking position and a release position and that acts upon the tool shaft is provided for braking of the tool shaft. A switching device is provided that can be moved between a first switching position, in which the tool shaft is connected to the output in a power transmitting manner and in which the braking device is transferred into the release position, and a second switching position, in which the tool shaft is decoupled from the output and in which the braking device is transferred into the braking position.Type: ApplicationFiled: June 26, 2019Publication date: December 26, 2019Applicant: C. & E. Fein GmbHInventor: Wolfgang DUERNEGGER
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Publication number: 20190375088Abstract: A handheld power tool having a drive driving a motor shaft, which is accommodated in a power tool housing, in which at least one air inlet covered by a dust protection element is formed, and having a tool interface for connecting a tool. The dust protection element is pushed onto the power tool housing in an insertion direction and is secured on the power tool housing.Type: ApplicationFiled: June 10, 2019Publication date: December 12, 2019Applicant: C. & E. Fein GmbHInventors: Wolfgang DUERNEGGER, Horst FAHRNER
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Publication number: 20190343016Abstract: An electronic unit for a hand-held power tool, having a mounting frame having an accommodation space into which a circuit board carrying a plurality of electronic components is inserted and at least one heat sink for the heat dissipation of waste heat arising at the electronic components. A slot section with at least one insertion slot, oriented perpendicular to the printed circuit board, for mounting an electronic component along a direction of insertion is formed on the mounting frame. The at least one heat sink is associated with the slot section.Type: ApplicationFiled: May 6, 2019Publication date: November 7, 2019Applicant: C. & E. Fein GmbHInventors: Christoph WOHLFROM, Wolfgang Duernegger
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Publication number: 20190305640Abstract: A hand held machine tool for machining workpieces, comprising a housing in which a motor driving a rotor shaft is accommodated, and having an air guide region formed in the housing for supplying cooling air to the motor along a main flow direction oriented substantially parallel to the motor longitudinal axis. The air guidance region is limited at one end by at least one air inlet and at the other end by at least one air outlet for discharging the cooling air from the housing. A separator is arranged in the air guide region for dividing the cooling air into an outer partial air flow flowing around the outer circumference of the motor and into an inner partial air flow flowing through the motor. The separator is formed such that a degree of contamination of the outer partial air flow is greater than a degree of contamination of the inner partial air flow.Type: ApplicationFiled: April 3, 2019Publication date: October 3, 2019Applicant: C. & E. Fein GmbHInventor: Wolfgang Duernegger
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Patent number: 9755194Abstract: A method is disclosed for producing a battery with a metallic housing and an electrical insulation layer covering the outside of the housing. The method includes: providing a metallic housing or housing part for a battery; corona treating the outside of the housing or of the housing part, with simultaneous extraction of the gases and particles which arise; and applying the electrical insulation layer onto the treated outside of the housing or housing part.Type: GrantFiled: July 9, 2012Date of Patent: September 5, 2017Assignees: Robert Bosch GmbH, Samsung SDI Co., Ltd.Inventors: Thomas Wöhrle, Wolfgang Duernegger
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Patent number: 9660288Abstract: A battery subunit includes multiple battery modules that are connected to one another in a parallel and/or series manner, and a thermal management system that contacts each of the multiple battery modules. Each of the multiple battery modules has respective multiple battery cells. The thermal management system is configured to dissipate heat that occurs during operation of the multiple battery modules. The battery subunit further includes a carrier unit that comprises at least one carrier plate positioned on a side of the thermal management system that is remote from the battery modules. The thermal management system is configured to at least partially receive, and on at least two opposite lying edges comprises, in each case, one or multiple grooves configured to collect and/or drain off at least one of fluids that are situated in the at least one carrier plate, and condensation water and/or leakage from the thermal management system.Type: GrantFiled: March 26, 2014Date of Patent: May 23, 2017Assignees: Robert Bosch GmbH, Samsung SDI Co., Ltd.Inventors: Boris Gendlin, Johannes Helmich, Michael Wellm, Wolfgang Duernegger
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Publication number: 20170036338Abstract: A hand-guided machine tool is provided, in particular a hand-guided electric power tool, having a housing, whereon a grip part is provided which projects from a stop surface at one end of the housing, wherein the stop surface protrudes laterally with respect to the grip part at all sides and merges into the grip part via a preferably concave curvature.Type: ApplicationFiled: October 25, 2016Publication date: February 9, 2017Inventor: Wolfgang Duernegger
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Publication number: 20140322588Abstract: A housing for a battery cell includes a paint coating for electrical insulation. The paint coating contains adhesive-containing particles, the adhesive of which can be activated under defined conditions. For example, the adhesive can be activated by pressure when clamping battery cells comprising such a housing, such that the friction coefficient of the contact surfaces of the housing is increased.Type: ApplicationFiled: November 15, 2012Publication date: October 30, 2014Applicant: Robert Bosch GmbHInventor: Wolfgang Duernegger
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Publication number: 20140295223Abstract: A battery subunit includes multiple battery modules that are connected to one another in a parallel and/or series manner, and a thermal management system that contacts each of the multiple battery modules. Each of the multiple battery modules has respective multiple battery cells. The thermal management system is configured to dissipate heat that occurs during operation of the multiple battery modules. The battery subunit further includes a carrier unit that comprises at least one carrier plate positioned on a side of the thermal management system that is remote from the battery modules. The thermal management system is configured to at least partially receive, and on at least two opposite lying edges comprises, in each case, one or multiple grooves configured to collect and/or drain off at least one of fluids that are situated in the at least one carrier plate, and condensation water and/or leakage from the thermal management system.Type: ApplicationFiled: March 26, 2014Publication date: October 2, 2014Applicant: Samsung SDI Co., Ltd.Inventors: Boris Gendlin, Johannes Helmich, Michael Wellm, Wolfgang Duernegger
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Publication number: 20140212738Abstract: A method is disclosed for producing a battery with a metallic housing and an electrical insulation layer covering the outside of the housing. The method includes: providing a metallic housing or housing part for a battery; corona treating the outside of the housing or of the housing part, with simultaneous extraction of the gases and particles which arise; and applying the electrical insulation layer onto the treated outside of the housing or housing part.Type: ApplicationFiled: July 9, 2012Publication date: July 31, 2014Applicants: SAMSUNG SDI CO., LTD., ROBERT BOSCH GmbHInventors: Thomas Wöhrle, Wolfgang Duernegger