Patents by Inventor Andreas Fritz

Andreas Fritz 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: 6028512
    Abstract: An electronic blinker circuit for a vehicle has an analog relay control section (24) and a digital circuit control section (25) arranged in a housing having only eight terminals. A holding circuit in the digital circuit section prevents an unintended oscillation when relay contacts are opened while a manual warn-blinker switch is still closed. When the engine ignition is switched off the blinker circuit requires a low quiescent current flow that is typically only 10 .mu.A.
    Type: Grant
    Filed: April 15, 1999
    Date of Patent: February 22, 2000
    Assignee: Temic Semiconductor GmbH
    Inventors: Roland Schropp, Andreas Fritz
  • Patent number: 5805061
    Abstract: A method and an electronic circuit are for monitoring the operation of a circuit including a plurality of intermittently powered parallel load elements, such as the flasher lamps of a vehicle. The total load current is directed through a measuring shunt resistor, and the resulting voltage across the shunt is measured and evaluated. The measured voltage initially arising across the shunt is used as a basis to establish a first voltage level for a load failure control threshold. A second voltage level greater than the first voltage level is established as a short-circuit control threshold. Then, the voltage value arising across the shunt during operation of the circuit is compared to the load failure control threshold and the short-circuit control threshold, and a load failure or a short-circuit is detected dependent upon and responsive to the result of these comparisons.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: September 8, 1998
    Assignees: Hella KG Hueck & Co., Temic Telefunken Microelectronic GmbH
    Inventors: Andreas Fritz, Hans-Josef Evens, Robin D. Ray
  • Patent number: 5309142
    Abstract: An electronic flasher unit for one or more flashing lamps activated by flasher switches is described. The flasher unit has at least three control inputs and an integrated circuit for controlling a flashing relay with relay contacts. In addition, further switching means are provided that can be used to alter the operating state of the integrated circuit as a function of the switch settings of the flasher switches and the ignition switch.
    Type: Grant
    Filed: February 26, 1992
    Date of Patent: May 3, 1994
    Assignee: Temic Telefunken microelectronic GmbH
    Inventor: Andreas Fritz
  • Patent number: T953003
    Abstract: A paintable, scratch-resistant, thermoplastic composition containing 40-70% by weight of total polymer of an uncured copolymer of ethylene and higher .alpha.-olefin, said copolymer containing at least 67 weight percent ethylene units and having a Mooney viscosity of from 40-80; 30-60% by weight of total polymer of crystalline propylene polymer; and 20-50 parts carbon black per 100 parts of total weight of polymers having an oil absorption number of 50-140 cc's per 100 grams and a mean particle diameter of about 34-77 millimicrons.
    Type: Grant
    Filed: October 14, 1975
    Date of Patent: December 7, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Andrea Fritz