Patents by Inventor Stefan Dorner
Stefan Dorner 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: 7811004Abstract: A seal (2) for a bearing (6) that rotatably supports a shaft (14) extending through a housing opening (8) of a housing element (10) that limits, at least partially, a lubricant-receiving chamber (4), includes a sealing ring (26) retainable between the housing element (10) and the shaft (14) and forming together with a limiting element (28) an annular gap (30), and having aeration recesses (34) which connect the annular gap (30) with the grease-containing chamber (4).Type: GrantFiled: September 18, 2007Date of Patent: October 12, 2010Assignee: Hilti AktiengesellschaftInventors: Stefan Dorner, Markus Hartmann, Herbert Rehm
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Patent number: 7628221Abstract: A pneumatic percussion mechanism for a hand-held power tool includes a percussion piston (23) displaceable in a guide tube (21) for applying impacts to an anvil (24), a driving member (22) reciprocating in the guide tube (21) for driving the percussion piston, and an air spring (25) for transmitting a driving torque from the driving member (22) to the percussion piston (23) and directly switchable on and off by the anvil (24).Type: GrantFiled: February 6, 2008Date of Patent: December 8, 2009Assignee: Hilti AktiengesellscahftInventors: Markus Hartmann, Stefan Dorner, Peter Sternberger
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Publication number: 20080202782Abstract: A pneumatic percussion mechanism for a hand-held power tool includes a percussion piston (23) displaceable in a guide tube (21) for applying impacts to an anvil (24), a driving member (22) reciprocating in the guide tube (21) for driving the percussion piston, and an air spring (25) for transmitting a driving torque from the driving member (22) to the percussion piston (23) and directly switchable on and off by the anvil (24).Type: ApplicationFiled: February 6, 2008Publication date: August 28, 2008Inventors: Markus Hartmann, Stefan Dorner, Peter Sternberger
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Publication number: 20080100170Abstract: A carbon brush (2) has an end contacting side (4) and an end application side (10) remote of the latter, and four side surfaces (8a, 8b, 8c, 8d), wherein wear-protecting means are arranged at an end area (24) facing the end application side (10). The wear-protecting means are formed as a cup-shaped protective cap (14).Type: ApplicationFiled: September 27, 2007Publication date: May 1, 2008Inventors: Herbert Rehm, Stefan Dorner
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Publication number: 20080075401Abstract: A seal (2) for a bearing (6) that rotatably supports a shaft (14) extending through a housing opening (8) of a housing element (10) that limits, at least partially, a lubricant-receiving chamber (4), includes a sealing ring (26) retainable between the housing element (10) and the shaft (14) and forming together with a limiting element (28) an annular gap (30), and having aeration recesses (34) which connect the annular gap (30) with the grease-containing chamber (4).Type: ApplicationFiled: September 18, 2007Publication date: March 27, 2008Inventors: Stefan Dorner, Markus Hartmann, Herbert Rehm
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Publication number: 20070236096Abstract: A motor (2) includes a carbon brush holder device (16) for reversing the rotating direction of the motor (2) and which has a brush holder (18) which is rotatable relative to the stator (8) of the motor (2) in clockwise running position and counterclockwise running position, two carbon brush guides which electrically connected to the stator (8) in both running positions by a switching arrangement (45) and provided at the brush holder (18), with the switching arrangement (45) having stator-side switching contact means and brush-side switching contact means which produce different contacts in the clockwise running position and the counterclockwise running position for reversing the polarity of the motor (2), and with the switching contact means are being encapsulated relative to the rest of the carbon brush holder device (16).Type: ApplicationFiled: April 4, 2007Publication date: October 11, 2007Inventor: Stefan Dorner
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Patent number: 7197826Abstract: A suction connection arrangement for a compass saw includes a suction connection element (26) for connecting suction flow producing apparatus with the compass saw, a suction channel (24) for connecting the suction cross-section (18) of the saw with the suction connection element and completely separable from the compass saw (2), and a connection device (30) for releasably connecting the suction connection elements (26) with the saw housing (4).Type: GrantFiled: December 7, 2004Date of Patent: April 3, 2007Assignee: Hilti AktiengesellschaftInventors: Konstantin Baxivanelis, Stefan Dorner, Michael Neumeier
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Patent number: 6910694Abstract: A quick-action clamping device for a power tool includes a clamping spindle (4) arranged in the hollow spindle (2) of the power tool, an elastic member (5) for biasing the clamping spindle (4) into its clamping poition, in which the working tool is claming between a claming flange (7) provided on a working tool-side end of the claming spindle (4) and the hollow spindle (2), an actuation element (24) for displacing the claming spindle (4) against the biasing force of the elastic member and into its exchange position in which the working tool (3) is released, and a compansator (15) for interrupting action of the elastic member (5) on the clamping spindle (4) in the exchange position of the clamping spindle (4).Type: GrantFiled: May 3, 2002Date of Patent: June 28, 2005Assignee: Hilti AktiengesellschaftInventors: Markus Hartmann, Stefan Dorner
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Publication number: 20050126010Abstract: A suction connection arrangement for a compass saw includes a suction connection element (26) for connecting suction flow producing apparatus with the compass saw, a suction channel (24) for connecting the suction cross-section (18) of the saw with the suction connection element and completely separable from the compass saw (2), and a connection device (30) for releasably connecting the suction connection elements (26) with the saw housing (4).Type: ApplicationFiled: December 7, 2004Publication date: June 16, 2005Inventors: Konstantin Baxivanelis, Stefan Dorner, Michael Neumeier
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Patent number: 6769188Abstract: A pendulum scroll saw including a lifting rod (1) for securing a saw blade (2), and a motor-driven entrain member (3) for reciprocating the lifting rod (1) with the lifting rod (1) having a guide surface (4) connectable with the entrain member (3), and with a contact region of the guide surface (4) with the entrain member (3) having a curved profile that deviates from a straight line.Type: GrantFiled: July 24, 2002Date of Patent: August 3, 2004Assignee: Hilti AktiengesellschaftInventors: Stefan Dorner, Konstantin Baxivanelis
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Patent number: 6640692Abstract: A food processor (1) with a mixing vessel (12) and a drive (21) for an agitator (11) in the mixing vessel (12), the mixing vessel (12) being heatable in its lower region and having on a bottom a dome (24) which has a securing mount for the agitator, wherein a resistance heating element (10) with printed conductors (23) applied to a dielectric (22) is fitted on a base (16) of the mixing vessel (12), the heating element (10) having a central recess (25) which is adapted to the dome (24), said heating element (10) being generally circular and disk-shaped.Type: GrantFiled: February 24, 2003Date of Patent: November 4, 2003Assignee: Vorwerk & Co. Interholding GmbHInventors: Stefan Hilgers, Klaus-Martin Weber, Stefan Dörner
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Publication number: 20030019112Abstract: A pendulum scroll saw including a lifting rod (1) for securing a saw blade (2), and a motor-driven entrain member (3) for reciprocating the lifting rod (1) with the lifting rod (1) having a guide surface (4) connectable with the entrain member (3), and with a contact region of the guide surface (4) with the entrain member (3) having a curved profile that deviates from a straight line.Type: ApplicationFiled: July 24, 2002Publication date: January 30, 2003Inventors: Stefan Dorner, Konstantin Baxivanelis
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Publication number: 20020170408Abstract: An electrical tool including a hollow spindle (2) for supporting a working tool (3) and a quick-action device for clamping the working tool (3) with respect to the hollow spindle (2) and having a clamping spindle (4) arranged in the hollow spindle (2) with a possibility of an axial displacement relative thereto, an elastic member (5) for biasing the clamping spindle (4) into its clamping position, an actuation device for displacing the clamping spindle into its exchange position, and a compensator for interrupting the action of the elastic member (5) on the clamping spindle (4) at least in the exchange position of the clamping spindle.Type: ApplicationFiled: May 3, 2002Publication date: November 21, 2002Inventors: Markus Hartmann, Stefan Dorner
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Patent number: 5799567Abstract: The invention concerns a food processor (1) with a mixing vessel (6) and a drive mechanism (8) for an agitator (10) in the mixing vessel (6), the lower region of which can be heated. As an improvement on a food processor (1) of this type, it is proposed that a weighing device (16) should be provided and that the weighing device (16) should determine the weight of a mixing pot support (7) including a heating unit (40).Type: GrantFiled: March 14, 1997Date of Patent: September 1, 1998Assignee: Vorwerk & Co. Interholding GmbHInventor: Stefan Dorner
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Patent number: 5794524Abstract: The invention relates to a food processor with a mixing vessel and a drive mechanism for an agitator in the mixing vessel, the lower region of which can be heated. As a simple way of improving a food processor of this type, it is proposed that a top unit for the mixing vessel should have a perforated base to allow food to be steam-cooked. The perforations are formed in a support plate in the base of the top unit and condensation and moisture are led back into the mixing vessel.Type: GrantFiled: January 7, 1997Date of Patent: August 18, 1998Assignee: Vorwerk & Co. Interholding GmbHInventors: Uwe Kemker, Stefan Dorner, Oliver Lapp
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Food processor comprising a mixing vessel and a drive mechanism for an agitator in the mixing vessel
Patent number: 5768978Abstract: A food processor with an agitator within a mixing vessel includes a drive mechanism for driving the agitator. Heat is applied to a lower region of the vessel during a holding of the vessel in a narrowly enclosing seat having a cylindrical wall region encircling a part of the vessel exclusive of a gap in the wall. An adjustment device enables enlargement and contraction of the wall region to facilitate emplacement and removal of the vessel with respect to the seat.Type: GrantFiled: January 27, 1997Date of Patent: June 23, 1998Assignee: Vorwerk & Co. Interholding GmbHInventors: Stefan Dorner, Volker Schmitz -
Patent number: 5749285Abstract: The invention pertains to a food processor with a mixing vessel (4) and a drive mechanism for an agitator in the mixing vessel (4), where the mixing vessel (4) has in its lower region an opening of substantially circular cross-section. To make this type of food processor more practicable the invention proposes that the cross-section of the upper opening be elliptical and that a geometric mid-point (19') of the upper opening cross-section be offset from a mid-point (19) of the lower opening cross-section.Type: GrantFiled: January 21, 1997Date of Patent: May 12, 1998Assignee: Vorwerk & Co. Interholding GmbHInventors: Stefan Dorner, Uwe Kemker, Hans-Peter Simm, Oliver Lapp
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Patent number: 5094927Abstract: A hydrogen/oxygen fuel cell includes an electrolyte which is solid at room temperature, has opposing faces, conducts protons, and is comprised of at least one of (a) at least one oxide of at least one element selected from the group consisting of Group IVB, VB, VIB, and VIII elements of the Periodic Table, (b) silicon dioxide, and (c) at least one fluoride of at least one element selected from the group consisting of Group IIA and IIIB elements of the Periodic Table. Also included are a hydrogen electrode which is applied to one face of the opposing faces of the electrolyte, is hydrogen permeable, and is negatively charged in use; and an oxygen electrode which is applied to another face of the opposing faces of the electrolyte, is hydrogen permeable, and is positively charged in use. A hydrogen-containing gas chamber is provided so as to be in communication with the hydrogen electrode; and an oxygen-containing gas chamber is provided so as to be in communication with the oxygen electrode.Type: GrantFiled: September 6, 1990Date of Patent: March 10, 1992Assignee: Kernforschungszentrum Karlsruhe GmbHInventors: Friedrich G. K. Baucke, Stefan Dorner, Volker Heinzel, Gernot Roth
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Patent number: 4407774Abstract: In a method for the controlled removal of hydrogen released into the chambers of a nuclear reactor containment after a break of the primary cooling system, the hydrogen is contacted with an oxygen providing material stored in the containment which causes recombination of the hydrogen to H.sub.2 O in a controlled manner at least until the amount of the gas within the hydrogen chamber is below the ignition limit of a hydrogen oxygen gas mixture.Type: GrantFiled: July 15, 1977Date of Patent: October 4, 1983Assignee: Kernforschungszentrum Karlsruhe G.m.b.H.Inventors: Klaus Schretzmann, Stefan Dorner, Gustav Schumacher
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Patent number: 4300983Abstract: A method and arrangement for containing the core melt flowing from a nuclear reactor into a core catcher below the core wherein the core melt is permitted to gradually penetrate layers of a core catcher materials of inorganic reactor soluble oxides or salts disposed in the core catcher which core catcher materials are dissolved by the oxidic part of the core melt, and the molten solution, after solidification and after being cooled down to a temperature at which hydrogen generating reactions do not take place, is leached with water and rinsed out of the core catcher without the need for humans to be present in the reactor containment and to be exposed to radiation.Type: GrantFiled: October 13, 1977Date of Patent: November 17, 1981Assignee: Kernforschungszentrum KarlsruheInventors: Mario Dalle Donne, Stefan Dorner, Gustav Schumacher