Patents by Inventor Rolf Thomas

Rolf Thomas 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: 4658520
    Abstract: An electrically heated steam iron has a soleplate in which are arranged an electrical heating element and a vaporization chamber, and a soleplate liner which consists of a different material from the soleplate and which is fixed thereto. The soleplate is provided with steam escape holes which communicate with respective openings in the soleplate liner, each such opening having a steam distribution groove on the ironing surface of the soleplate liner. The soleplate has recesses each congruent to a respective steam distribution groove and the longitudinal axes of all the grooves are directed towards the center of gravity of the ironing surface of the soleplate liner.
    Type: Grant
    Filed: June 4, 1986
    Date of Patent: April 21, 1987
    Assignee: Rowenta-Werke GmbH
    Inventors: Gerd Henneberger, Robert Walter, Rolf Thomas, Ernst Bechstein, Norbert Voss
  • Patent number: 4200400
    Abstract: A mixing car for transporting molten metals, comprises, a car undercarriage with a longitudinally elongated mixing vessel supported on the undercarriage at each end for rotation about a horizontally disposed longitudinal axis of the vessel. The support means at at least one end comprises a support bridge frame which is universally pivotally mounted on the undercarriage and is provided with journals on each side for accommodating a support roller shaft which is held in position in respect to the support bridge frame by an anti-rotation safety. The roller shafts include ends which extend outwardly from each longitudinal end of the bridge frame and hollow rollers are mounted on each projecting end of the roller shaft on suitable roller bearings. Interior support rollers are also provided which are affixed to the end of the shaft outboard of the roller bearings and which carry diametrically opposite rollers which engage and support the support rollers.
    Type: Grant
    Filed: December 22, 1978
    Date of Patent: April 29, 1980
    Assignee: Gutehoffnungshutte Sterkrade A.G.
    Inventors: Winfried Laubach, Heinz Kienbaum, Rolf Thomas
  • Patent number: 4069975
    Abstract: A mixer truck for shipping molten metals in an elongated, substantially cylindrical vessel, which has an end portion with a plurality of annular bearing rings extending therearound, comprises a truck body with a frame plate girder which is universally mounted on the body. The frame plate girder carries two spaced sets of rollers forming a rotational cradle support for each of the ring members on the cylindrical vessel. A drive motor, carried on the universally mounted frame plate girder, is connected to drive a sprocket wheel or gear extending around the vessel between the rings.
    Type: Grant
    Filed: November 22, 1976
    Date of Patent: January 24, 1978
    Assignee: Gutehoffnungshutte Sterkrade Aktiengesellschaft
    Inventors: Winfried Laubach, Kienbaum, Rolf Thomas