Patents by Inventor Ralf Steinhart

Ralf Steinhart 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: 7281828
    Abstract: The invention concerns vehicle headlights with two light functions, comprising a reflector (10) and a two-filament bulb (14), whose first spiral-wound filament (14?) generates a first light function and whose second spiral-wound filament (14?) generates a second light function, each light function being associated with a region (10?, 10?) of the reflector (10), wherein the second spiral-wound filament (14?) cooperates with a covering cap (18) which shields a portion of the light for the light function associated with this spiral-wound filament, which would otherwise impinge on the region (10?) of the reflector (10) which is associated with the first light function, wherein the second spiral-wound filament (14?) generates a turning and/or curve light and the regions (10?, 10?) of the reflector (10) are separated by a separating line (12) which extends in a segment of the reflector at an angle of between ±0 and 35°, in particular ±15 and 35°, with respect to the vertical line.
    Type: Grant
    Filed: July 26, 2004
    Date of Patent: October 16, 2007
    Assignee: Automotive Lighting Reutlingen GmbH
    Inventors: Ralf Steinhart, Michael Scholl, Friedemann Schlienz, Silke Barton
  • Publication number: 20050036332
    Abstract: The invention concerns vehicle headlights with two light functions, comprising a reflector (10) and a two-filament bulb (14), whose first spiral-wound filament (14?) generates a first light function and whose second spiral-wound filament (14?) generates a second light function, each light function being associated with a region (10?, 10?) of the reflector (10), wherein the second spiral-wound filament (14?) cooperates with a covering cap (18) which shields a portion of the light for the light function associated with this spiral-wound filament, which would otherwise impinge on the region (10?) of the reflector (10) which is associated with the first light function, wherein the second spiral-wound filament (14?) generates a turning and/or curve light and the regions (10?, 10?) of the reflector (10) are separated by a separating line (12) which extends in a segment of the reflector at an angle of between ±0 and 35°, in particular ±15 and 35°, with respect to the vertical line.
    Type: Application
    Filed: July 26, 2004
    Publication date: February 17, 2005
    Applicant: Automotive Lighting Reutlingen GmbH
    Inventors: Ralf Steinhart, Michael Scholl, Friedemann Schlienz, Silke Barton
  • Patent number: 5967651
    Abstract: The low-beam headlight has a reflector, in which a light source is mounted and a light-permeable disk which has optical elements. Light from the light source is reflected as a light beam by the reflector which would illuminate a region (62) of a measuring screen (60) placed in front of the headlight so that the region (62) has a horizontal light-dark boundary without being effected by or without action of the light-permeable disk. A first part of the light beam reflected by the reflector illuminates a first part (64a,64b) of the screen under boundary lines (65a,65b) inclined relative to the light-dark boundary (63). A second part of the light beam reflected by the reflector illuminates a second part (66) of the measuring screen between the light-dark boundary (63) and the boundary lines (65a,65b).
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: October 19, 1999
    Assignee: Robert Bosch Gmbh
    Inventors: Rainer Neumann, Henning Hogrefe, Ralf Steinhart