Patents by Inventor Rolf Stuhler

Rolf Stuhler 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: 4514618
    Abstract: An axially compact hairdryer includes a cylindrical housing having an air inlet and an air outlet at opposite ends thereof. An electric motor is centrally mounted within the housing by a pair of spaced apart support grates secured to the housing perpendicular to the air flow and a cylindrical heating element support body is carried by the support grates and located in concentric spaced relation between the housing and the motor. The heating element is wound about the support element. A fan is operatively connected to the motor for moving air from the inlet to the outlet over the heating element. Air directing vanes are attached to one of the support grates between the motor and the fan.
    Type: Grant
    Filed: February 3, 1984
    Date of Patent: April 30, 1985
    Assignee: Braun AG
    Inventors: Rudolf Majthan, Rolf Stuhler, Raymond G. Parsonage, Charles C. Packham
  • Patent number: 4416298
    Abstract: A hair curler for rolling up the hair having a cylindrical rod body containing a catalytic heating device. The rod body is permanently affixed on a handle which is designed as a fuel tank. A thermostatically controlled valve device, between the fuel tank and the rod body, regulates the fuel supply from the fuel tank to the catalytic heating device. An opening allows air to enter the chamber which contains the catalyst. An ignition device is situated at the free end of the cylindrical rod body. The ignition device is activated by means of an operating key which closes an electrical circuit, to heat an incandescent filament, and thus to initiate catalytic combustion at the catalyst. A chamber is situated between the battery and the combustion chamber. This chamber is flushed through by ambient air and inhibits heat flow. The electrical conductors of the ignition device are conducted through this chamber.
    Type: Grant
    Filed: March 9, 1982
    Date of Patent: November 22, 1983
    Assignee: Braun Aktiengesellschaft
    Inventors: Conrad Berghammer, Walter Schafer, Rolf Stuhler
  • Patent number: 4300280
    Abstract: An axially compact hair dryer includes a cylindrical outer housing 1, an air outlet 2 at one end of the housing, an air inlet grate 3 at the other end, an electric motor 4 centrally mounted within the housing and driving a blower fan 5, and a generally cylindrical electric heating element 7 disposed in the otherwise wasted annular space between the motor and the housing.
    Type: Grant
    Filed: March 25, 1980
    Date of Patent: November 17, 1981
    Assignee: Braun A.G.
    Inventors: Rudolf Majthan, Rolf Stuhler, Raymond G. Parsonage, Charles C. Packham
  • Patent number: D386760
    Type: Grant
    Filed: December 15, 1995
    Date of Patent: November 25, 1997
    Assignee: NSM Jukebox GmbH
    Inventor: Rolf Stuhler