Patents by Inventor Hans-Dieter Poweleit

Hans-Dieter Poweleit 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).

  • Patent number: 4918289
    Abstract: A portable electric hair dryer wherein the tubular part of the housing has an inlet for atmospheric air and an outlet for heated air. The housing confines an electric motor for an impeller which induces the flow of air from the inlet toward the outlet, and an electric heater for the flow of air. The motor is surrounded by annular first insulating carrier of electric contacts which are connectable to an energy source, and the heater has a second insulating carrier for contacts which are separably connectable with the contacts on the first carrier and serve to supply energy to the heater. The first carrier has surfaces which engage adjacent surfaces on a stationary air guide having a socket for the motor behind the first carrier. The contacts on the first carrier can include flat plugs which are receivable between pairs of elastic prongs constituting the respective contacts on the second carrier, or vice versa.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: April 17, 1990
    Assignee: Robert Krups Stiftung & Co. Kg.
    Inventors: Heinz-Jurgen Ohlsen, Hans-Dieter Poweleit
  • Patent number: 4896020
    Abstract: A portable electric hair dryer wherein the insulating carrier of electric contacts for a motor which drives an air impeller between the air-admitting inlet and the air-discharging outlet of the housing is separably coupled to a second insulating carrier which is provided with electric contacts for and supports an electric heater. The latter heats the flow of air between the inlet and the outlet of the housing. One of the carriers has male coupling elements, which can include or constitute the contacts on the one carrier, and the other carrier can have female coupling elements, which can include or constitute the contacts on the other carrier, capable of separably receiving and retaining the male coupling elements.
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: January 23, 1990
    Assignee: Robert Krups Stiftung & Co. KG.
    Inventor: Hans-Dieter Poweleit
  • Patent number: 4896021
    Abstract: A portable electric hair dryer wherein the housing contains an electric motor for an impeller which induces the flow of air from an inlet of the housing, along an electric heater in the housing and to and through an outlet of the housing. The casing of the motor is surrounded by a ring-shaped diffuser with stationary guide vanes which uniformize the flow of air toward the heater. The controls of the motor are mounted on a circuit board which carries one or more triacs, diodes and/or other electronic components which are heated when connected with a source of electrical energy and must be cooled when the hair dryer is in use. The heatable electronic component or components are mounted on an extension of the circuit board, and such extension is installed directly in the diffuser between two neighboring guide vanes. To this end, one of the guide vanes is removed or omitted and the electronic component or components take the place of the missing guide vane.
    Type: Grant
    Filed: August 22, 1988
    Date of Patent: January 23, 1990
    Assignee: Robert Krups Stiftung & Co. KG
    Inventors: Hans-Dieter Poweleit, Heinrich Komesker