Patents by Inventor Detlef Kemmer

Detlef Kemmer 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).

  • Publication number: 20160197535
    Abstract: An electric machine includes a rotor and a stator having a plurality of windings. The rotor is configured to rotate about a rotational axis and includes a plurality of permanent magnets arranged on a circumference of the rotor. A magnetically non-effective zone is created in a central region of the rotor. A least one opening extends substantially in an axial direction in the magnetically non-effective zone of the rotor to form an air flow path through the rotor. A fan is configured to move with the rotor to generate an air flow along the air flow path through the at least one opening of the rotor.
    Type: Application
    Filed: December 18, 2015
    Publication date: July 7, 2016
    Inventors: Pietro De Filippis, Detlef Kemmer, Harald Redelberger, Hermann Schulz
  • Patent number: 9088184
    Abstract: A drive motor, in particular for a fan wheel of a radiator of a motor vehicle, is provided. The drive motor comprising a stator, and a rotor rotating about an axis of rotation relative to the stator, which is driven in cooperation with the stator. Means for generating an air flow for cooling at least one component of the drive motor are arranged on the rotor.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: July 21, 2015
    Assignee: Brose Fahrzeugteile GmbH & Co. KG, W├╝rzburg
    Inventors: Horst Eisert, Detlef Kemmer
  • Publication number: 20120313466
    Abstract: A drive motor, in particular for a fan wheel of a radiator of a motor vehicle, is provided. The drive motor comprising a stator, and a rotor rotating about an axis of rotation relative to the stator, which is driven in cooperation with the stator. Means for generating an air flow for cooling at least one component of the drive motor are arranged on the rotor.
    Type: Application
    Filed: November 23, 2009
    Publication date: December 13, 2012
    Inventors: Horst Eisert, Detlef Kemmer
  • Patent number: 7977831
    Abstract: An electromotor has an external stator, and a ventilator vessel which is used to produce a cooling air flow for self-ventilation of the electromotor. In order to improve the cooling of an electromotors, it is proposed to use a ventilator vessel to help direct an air flow along the outer surface of the motor housing, through the inside of the housing of the electromotor and through an air gap formed between the motor housing wall and ventilator vessel.
    Type: Grant
    Filed: June 23, 2005
    Date of Patent: July 12, 2011
    Assignee: Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Wuerzburg
    Inventors: Pietro De Filippis, Markus Egerland, Detlef Kemmer, Paul Stephen McLennan, Harald Redelberger
  • Publication number: 20080193275
    Abstract: An electric machine has a rotor and a stator as well as a method for cooling such a machine. In order to improve cooling of an electric machine, the electric machine (18) has a rotor (2) that is excited by permanent magnets, a stator (38), magnets (3) which are arranged along the circumferential line of the rotor (2) in such a way that a magnetically non-effective zone (10) is created around the center of the rotor (2), at least one opening (11) in the magnetically non-effective zone (10) of the rotor (2) in order to embody an air flow path (41) through the rotor (2), the opening (11) extending substantially in an axial direction, and a fan (15, 56, 58, 59) which moves along with the rotor (2) and is used for embodying an air flow through the opening (11) of the rotor (2).
    Type: Application
    Filed: April 12, 2006
    Publication date: August 14, 2008
    Inventors: Pietro De Filippis, Detlef Kemmer, Harald Redelberger, Hermann Schulz
  • Publication number: 20080030087
    Abstract: An electromotor has an external stator, and a ventilator vessel which is used to produce a cooling air flow for self-ventilation of the electromotor. In order to improve the cooling of an electromotors, it is proposed to use a ventilator vessel to help direct an air flow along the outer surface of the motor housing, through the inside of the housing of the electromotor and through an air gap formed between the motor housing wall and ventilator vessel.
    Type: Application
    Filed: June 23, 2005
    Publication date: February 7, 2008
    Inventors: Pietro De Filippis, Markus Egerland, Detlef Kemmer, Paul McLennan, Harald Redelberger
  • Patent number: 7042121
    Abstract: The invention relates to a cooling fan for use in a motor vehicle. To achieve improved cooling of an electric motor it is proposed that the motor housing enclosing the electric motor be used as a heat sink for emitting waste heat into a cooling air flow. The cooling air flow for cooling the electric motor is routed here through the interior of the motor housing and subsequently along the outside of the motor housing over cooling elements in the areas of the air inlet openings and in the area or an air exit gap between fan wheel hub and front part of the motor housing. The cooling air flow is created in this case by the fan wheel hub of the fan wheel driven by the electric motor.
    Type: Grant
    Filed: June 24, 2005
    Date of Patent: May 9, 2006
    Assignee: Siemens Aktiengesellschaft
    Inventors: Pietro De Filippis, Markus Egerland, Detlef Kemmer, Paul Stephen McLennan, Harald Redelberger
  • Publication number: 20060022529
    Abstract: The invention relates to a cooling fan for use in a motor vehicle. To achieve improved cooling of an electric motor it is proposed that the motor housing enclosing the electric motor be used as a heat sink for emitting waste heat into a cooling air flow. The cooling air flow for cooling the electric motor is routed here through the interior of the motor housing and subsequently along the outside of the motor housing over cooling elements in the areas of the air inlet openings and in the area or an air exit gap between fan wheel hub and front part of the motor housing. The cooling air flow is created in this case by the fan wheel hub of the fan wheel driven by the electric motor.
    Type: Application
    Filed: June 24, 2005
    Publication date: February 2, 2006
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Pietro De Filippis, Markus Egerland, Detlef Kemmer, Paul McLennan, Harald Redelberger