Patents by Inventor Wanda S. Kruijt

Wanda S. Kruijt 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).

  • Method of and device for determining the charge condition of a battery
    Patent number: 6420851
    Abstract: A method is described for determining the charge condition of a battery (1), wherein the electromotive force (VEMF) is derived from measurements of the terminal voltage in a loaded condition, and the charge condition (Q) is determined with the aid of a pre-calculated relationship between (VEMF) and the charge condition (Q) on the basis of the (VEMF) thus calculated.
    Type: Grant
    Filed: April 4, 2000
    Date of Patent: July 16, 2002
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Franciscus A. C. M. Schoofs, Wanda S. Kruijt, Robert E. F. Einerhand, Saskia A. C. Hanneman, Hendrik J. Bergveld
  • Road-marking complex and system for marking roads
    Patent number: 6305874
    Abstract: A first road marking unit with a first base plate is provided with a first light source, and a second road-marking unit with a second base plate is provided with a second light source. A view angle of 0.1≦&agr;≦8° is formed between an interconnecting line, which interconnects the first and the second light sources, and an intersecting line which intersects the interconnecting line. In a view section where the view angle is 0.1≦&agr;≦8°, light beams originating from the first and the second light sources demonstrate a uniform overlap in the view section at a distance a≧40 m from the first light source. Preferably, the distance d between the first light source and the second light source lies in the range from 10 ≦d≦25 cm. The first and the second base plate of the road-marking units are integrated so as to form a base module.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: October 23, 2001
    Assignee: U.S. Philips Corporation
    Inventors: Adrianus C. W. Custers, Pieter W. C. Provo Kluit, Jacob C. P. Den Dulk, Gabrielle J. B. M. Meekes, Wanda S. Kruijt, Lucas L. D. Van Der Poel, Franciscus G. P. Sools, Constance J. E. Saalberg-Seppen
  • Battery management system and battery simulator
    Patent number: 6016047
    Abstract: A battery management system 100 comprises input means 102 for receiving input signals, such as current or voltage, which represent a physical quantity of a battery. In operation, processing means 105 of the battery management system 100 calculate a physical quantity of the battery, such as the State of Charge, based on the input signals by using an electrochemical/physical model of the battery. The model includes a representation of a main electrochemical storage reaction, whose behaviour is calculated in dependence on a battery temperature. The processing means 105 calculates the battery temperature based on a temperature model of a temperature development in the battery. The battery management system 100 comprises output means 104 for outputting an output signal which is derived from a state of the electrochemical storage reaction. The battery management system 100 is, advantageously, used in a smart battery 10 or a battery charger/discharger 200.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: January 18, 2000
    Assignee: U.S. Philips Corporation
    Inventors: Petrus H.L. Notten, Hendrik J. Bergveld, Wanda S. Kruijt