Patents by Inventor Karlernst Sewing

Karlernst Sewing 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: 4797790
    Abstract: A dimmed motor vehicle headlight is provided with an ellipsoidally shaped reflector, where a light source is disposed at a first focal point of the reflector. A collector lens is supported by a frame having an annular part which is connected to the reflector and where the lens is disposed behind a second focal point of the reflector. A diaphragm is provided which is in the path of the light beam ahead of the collector lens and disposed at the respective focal point of the collector lens. The diaphragm is provided adjustable and with an upper substantially horizontally running edge that generates a light-dark boundary. The diaphragm and the frame are formed as a single part. The frame is provided by a beaker shaped sheet metal piece, where a cut out floor area serves to support the lens and where arm shaped webs are cut free from a wall forming a jacket face. One of these webs is angled toward the optical axis such that its upper end edge forms the diaphragm edge for the light-dark boundary.
    Type: Grant
    Filed: May 12, 1986
    Date of Patent: January 10, 1989
    Assignee: Westfalische Metall Industrie KG, Hueck & Co.
    Inventors: Gunter Brodling, Franz Feyerabend, Peter Hubert, Franz Krahling, Wolfgang Peitz, Karlernst Sewing, Diethard Schnelle
  • Patent number: 4682274
    Abstract: An automotive headlight with a bowl-shaped plastic reflector. The reflector has at its apex an opening surrounded at the rear of the reflector by a sheet-metal retaining ring. The ring accommodates an incandescent lamp. The lamp is inserted into openings in the reflector with its securing tabs bent back toward the reflector and is secured to the reflector by barbs on the securing tabs that engage the edges of the holes. To improve the headlight to the extent that the openings in the reflector that accommodate the securing tabs are large enough not to shorten the life of the tool and do not need to be produced with such a precise tolerance, while still ensuring that the retaining ring will fit the reflector reliably and snugly, the securing tabs are bent into a U and the openings in the reflector that accommodate the tabs are quadrilateral and approximately as high and as wide as the tabs.
    Type: Grant
    Filed: September 3, 1986
    Date of Patent: July 21, 1987
    Assignee: Hella KG Hueck & Co.
    Inventors: Erwin Freudenreich, Horst Flerlage, Karlernst Sewing