Patents by Inventor Winfried Frohlich

Winfried Frohlich 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).

  • Fuel tank for a motor vehicle
    Patent number: 6409040
    Abstract: A fuel tank for a motor vehicle, having a wall (3) which is manufactured from plastic, in particular by injection molding, is provided on its inside with a permeation barrier (4). The permeation barrier (4) is manufactured from a material which is virtually impenetrable for fuel vapors. The permeation barrier (4) is composed of shell parts (5, 6) which are welded to one another.
    Type: Grant
    Filed: March 6, 2000
    Date of Patent: June 25, 2002
    Assignee: Mannesmann VDO AG
    Inventors: Markus Distelhoff, Karl Eck, Winfried Fröhlich, Dieter Keller, Justus Klöker, Knut Meyer, Ingo Mohr, Bernd Rumpf, Wolfgang Sinz, Rainer Moser
  • Method of producing a plastic component and fuel tank for a motor vehicle
    Patent number: 6395215
    Abstract: In a method of producing a fuel tank from plastic, a heating element is located between two shell parts to be welded to one another. When the shell parts are pressed together, the heating element melts into the plastic and produces a weld that provides a fuel-resistant seal. The fuel tank subsequently has a particularly exact shape.
    Type: Grant
    Filed: April 11, 2000
    Date of Patent: May 28, 2002
    Assignee: Mannesmann VDO AG
    Inventors: Markus Distelhoff, Karl Eck, Winfried Fröhlich, Dieter Keller, Justus Klöker, Knut Meyer, Ingo Mohr, Bernd Rumpf, Wolfgang Sinz, Rainer Moser
  • FUEL TANK
    Publication number: 20020047015
    Abstract: A fuel tank for a motor vehicle comprising a wall composed of two shells arranged one above the other. The outer shell of the wall preferably has an inlet orifice and an outlet orifice. A filter element is arranged in front of the outlet orifice. Scavenging air from the inlet orifice thereby passes first into a gap between the shells and subsequently to a filter element. As a result, fuel vapors can no longer diffuse through the wall and pollute the environment.
    Type: Application
    Filed: November 18, 1999
    Publication date: April 25, 2002
    Inventors: DR. MARKUS DISTELHOFF, KARL ECK, WINFRIED FROHLICH, DIETER KELLER, DR. JUSTUS KLOKER, DR. KNUT MEYER, INGO MOHR, DR. RAINER MOSER, BERND RUMPF, DR. WOLFGANG SINZ
  • Device for supplying an internal combustion engine of a motor vehicle with fuel
    Patent number: 6250328
    Abstract: A device for supplying an internal combustion engine (1) of a motor vehicle with fuel has a return line (4) which is passed into a fuel tank (2) and has a wall made of a material of high thermal conductivity. The return line (4) is arranged within a ventilation duct (5). Cooling air is conveyed through the ventilation duct (5) to the return line (4). This is a simple means of limiting the maximum temperature of the fuel in the fuel tank (2).
    Type: Grant
    Filed: March 20, 2000
    Date of Patent: June 26, 2001
    Assignee: Mannesmann Vdo AG
    Inventors: Markus Distelhoff, Karl Eck, Winfried Fröhlich, Dieter Keller, Justus Klöker, Knut Meyer, Ingo Mohr, Bernd Rumpf, Wolfgang Sinz
  • Plastic closure cap produced by injection molding
    Patent number: 6003904
    Abstract: A plastic closure cap (1) produced by injection molding for a fuel tank of a motor vehicle is provided, within the region of fuel lines which extend through it, with bushings (6, 7) of a temperature-resistant material of low thermal conductivity. Polyphenylene sulfide containing a proportion of mineral and/or of glass fibers or polyacetate reinforced with glass fibers is suitable for instance as material for the bushings (6, 7).
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: December 21, 1999
    Assignee: VDO Adolf Schindling AG
    Inventors: Winfried Frohlich, Burkhard Dasbach