Patents by Inventor Hans-Joachim Lutz
Hans-Joachim Lutz 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: 7834511Abstract: The invention relates to a claw pole generator comprising a claw pole rotor, two magnet wheel halves (21, 23) which are mounted on a drive shaft (15) and are provided with claw-shaped magnet poles (22, 24) that mesh with each other, and an annular closing member (10) located between adjacent magnet poles (21, 23). The magnet wheel halves (21, 23) can be inserted into pockets (11) of the closing member (10) along with the magnet poles (22, 24) thereof such that the closing member (10) overlaps the magnet poles (22, 24) on the edge in at least some areas. Also disclosed is a closing member (10).Type: GrantFiled: July 6, 2006Date of Patent: November 16, 2010Assignee: Robert Bosch GmbHInventors: Hans-Joachim Lutz, Oliver Gamm, Horst Braun
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Patent number: 7679259Abstract: A claw-pole rotor for an electrical machine, in particular a rotary current generator, having two pole wheels (26, 27), which each carry claw poles (28 and 29, respectively), which each originate in a plate region (50) and have a pole root (53), and on a circumference of the claw-pole rotor (20), claw poles (28, 29) of the pole wheels (26, 27) are located in alternation, and located between the claw poles or interstices (90), and a claw pole (28, 29) has a radially outward-oriented cylindrical-jacketlike surface (43), by which a pivot axis (65) is defined, and a chamfer (68) extends on the one hand in a circumferential direction and on the other in an edge direction of a claw pole (28 and 29, respectively), wherein the chamfer (68) has a center portion m in the edge direction that intersects a transition plane (59) which demarcates the pole root (53) and the freely projecting part of the claw pole (28 and 29, respectively), and the center portion m amounts to 8/10 of the length, oriented in the edge directionType: GrantFiled: December 30, 2004Date of Patent: March 16, 2010Assignee: Robert Bosch GmbHInventors: Hans-Joachim Lutz, Reinhard Meyer, Guenter Rademacher
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Publication number: 20080211337Abstract: The invention relates to a claw pole generator comprising a claw pole rotor, two magnet wheel halves (21, 23) which are mounted on a drive shaft (15) and are provided with claw-shaped magnet poles (22, 24) that mesh with each other, and an annular closing member (10) located between adjacent magnet poles (21, 23). The magnet wheel halves (21, 23) can be inserted into pockets (11) of the closing member (10) along with the magnet poles (22, 24) thereof such that the closing member (10) overlaps the magnet poles (22, 24) on the edge in at least some areas. Also disclosed is a closing member (10).Type: ApplicationFiled: July 6, 2006Publication date: September 4, 2008Inventors: Hans-Joachim Lutz, Oliver Gamm, Horst Braun
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Publication number: 20080024033Abstract: A claw-pole rotor for an electrical machine, in particular a rotary current generator, having two pole wheels (26, 27), which each carry claw poles (28 and 29, respectively), which each originate in a plate region (50) and have a pole root (53), and on a circumference of the claw-pole rotor (20), claw poles (28, 29) of the pole wheels (26, 27) are located in alternation, and located between the claw poles or interstices (90), and a claw pole (28, 29) has a radially outward-oriented cylindrical-jacketlike surface (43), by which a pivot axis (65) is defined, and a chamfer (68) extends on the one hand in a circumferential direction and on the other in an edge direction of a claw pole (28 and 29, respectively), wherein the chamfer (68) has a center portion m in the edge direction that intersects a transition plane (59) which demarcates the pole root (53) and the freely projecting part of the claw pole (28 and 29, respectively), and the center portion m amounts to 8/10 of the length, oriented in the edge directionType: ApplicationFiled: December 30, 2004Publication date: January 31, 2008Inventors: Hans-Joachim Lutz, Reinhard Meyer, Guenter Rademacher
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Patent number: 7309935Abstract: The present invention relates to a fan wheel (11) for electrical machines, in particular for alternators of motor vehicles, with a fan disk (10) that, on its axially outwardly directed end face, has a number of fan blades (13, 18) distributed around the circumference in the shape of a circular ring, the fan blades extending away from the fan disk in the axial direction, so that cooling air beneath the fan blades can be drawn in axially and blown radially outwardly between air channels (20, 21) formed between them. One part (18) of each of the fan blades is joined in a fixed manner with the fan disk (10) via only its radially outward end section (18a), so that each inner end section (18b) is swiveled radially increasingly outwardly by a centrifugal force (22) occurring there as rotational speeds increase, to reduce the cooling air stream.Type: GrantFiled: October 19, 2002Date of Patent: December 18, 2007Assignee: Robert Bosch GmbHInventors: Horst Braun, Hans-Joachim Lutz
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Publication number: 20050008483Abstract: The present invention relates to a fan wheel (11) for electrical machines, in particular for alternators of motor vehicles, with a fan disk (10) that, on its axially outwardly directed end face, has a number of fan blades (13, 18) distributed around the circumference in the shape of a circular ring, the fan blades extending away from the fan disk in the axial direction, so that cooling air beneath the fan blades can be drawn in axially and blown radially outwardly between air channels (20, 21) formed between them. One part (18) of each of the fan blades is joined in a fixed manner with the fan disk (10) via only its radially outward end section (18a), so that each inner end section (18b) is swiveled radially increasingly outwardly by a centrifugal force (22) occurring there as rotational speeds increase, to reduce the cooling air stream.Type: ApplicationFiled: October 19, 2002Publication date: January 13, 2005Inventors: Horst Braun, Hans-Joachim Lutz
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Patent number: 6720703Abstract: An electrical machine with a rotor (10), in particular a claw pole rotor, is proposed. The rotor (10) has an exciter system of electrically excited individual poles in the rotor (10), in the form of electromagnetically excited poles (28) and counterpart poles (34). A pole gap closure (55) is placed between the poles (28) and counterpart poles (34), which alternate on the circumference of the rotor (10), and at least partly fills the open spaces. The pole gap closure (55) is characterized in that it is braced by at least one of its axial end regions (61), via projections (64), on pole roots (37; 31).Type: GrantFiled: October 12, 2001Date of Patent: April 13, 2004Assignee: Robert Bosch GmbHInventors: Horst Braun, Hans-Joachim Lutz, Dieter Willms, Jérome Debard, Anne Perrin-Bonnet
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Patent number: 5324237Abstract: A belt drive of an electrical machine has a belt pulley arranged on a driving end of a machine shaft, a coupling connecting the drive pulley with the machine shaft, the coupling having at least one elastic coupling part provided between a driving side and a driven side of the coupling, a mounting part having a bearing pin and mountable on a machine aggregate which is connected with the electrical machine, a drive belt connecting the mounting part with the machine aggregate, and an inner bearing. The belt pulley in order to take up belt pull forces, is mounted through the inner bearing on the bearing pin of the mounting part which is mountable on the machine aggregate through the drive belt.Type: GrantFiled: December 24, 1992Date of Patent: June 28, 1994Assignee: Robert Bosch GmbHInventors: Thomas Bilsing, Johann Kunz, Hermann Lehnertz, Hans-Joachim Lutz, Johann Koeppel, Martin Leins