Patents by Inventor Karlheinz Frank

Karlheinz Frank 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: 5092186
    Abstract: A motion converter for small appliances driven by electric motors, such as electric toothbrushes, electric razors or the like, comprising a motor, tool bit and tool bit carrier, which is driven by the rotary motion of the motor and imparts a preferably orbital motion to the tool bit. The latter is accomplished by a novel mechanism for converting the rotary motion of the motor shaft into a generally transverse reciprocating motion. The mechanism employs a follower having a guide slot with parallel side faces and conically extending, radial outer contoured surfaces. The follower comprises a bore for the motor shaft or for a cam on the motor shaft and is slidingly mounted thereon.
    Type: Grant
    Filed: June 27, 1990
    Date of Patent: March 3, 1992
    Assignee: Rowenta-Werke GmbH
    Inventor: Karlheinz Frank
  • Patent number: 4817309
    Abstract: A hand-held steam brush, consisting of a support plate with steam holes which forms an outer wall of the hand-held steam brush. A pressure plate with steam exit holes is releasably secured to the support plate. The pressure plate, guided by hinged spacers, is movable towards the support plate counter to the pressure of a spring and can be fixedly connected to the support plate by means of a pressure plate locking device.
    Type: Grant
    Filed: February 3, 1988
    Date of Patent: April 4, 1989
    Assignee: Rowenta-Werke GmbH
    Inventors: Karlheinz Frank, Christoph Hanschke, Franz A. Stutzer