Patents by Inventor Ralf Frohn

Ralf Frohn 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: 7425688
    Abstract: A heating assembly for heating a hot air stream flowing in a flow passage of a tumble dryer. The heating assembly is configured for installation in the flow passage and comprises at least one heating element and at least one temperature sensor. The heating element is arranged such that the hot air stream can flow around it in a passing direction (D). The at least one temperature sensor can detect the temperature of the hot air stream and is arranged such that it projects into a core area of the hot air stream.
    Type: Grant
    Filed: May 6, 2005
    Date of Patent: September 16, 2008
    Assignee: DBK David + Baader GmbH
    Inventors: Andreas Loesch, Ralf Frohn, Jerome Grunewald, Jens Koehne
  • Publication number: 20050252033
    Abstract: The present invention relates to a heating assembly (1) for heating a hot air stream (6) flowing in a flow passage (29) of a tumble dryer (26), said heating assembly (1) being configured for installation in said flow passage (29) and comprising at least one heating element (5), which is arranged such that the hot air stream (6) can flow around it in a passing direction (D), and at least one temperature sensor (4) by means of which the temperature of the hot air stream (6) can be detected. In order to provide a heating assembly (1) which allows more precise temperature control to be executed, the present invention is so conceived that the at least one temperature sensor (4) is arranged such that it projects into a core area (15) of the hot air stream (6).
    Type: Application
    Filed: May 6, 2005
    Publication date: November 17, 2005
    Applicant: DBK David + Baader GmbH
    Inventors: Andreas Loesch, Ralf Frohn, Jerome Grunewald, Jens Koehne