Patents by Inventor Frank J. P. Van Rens

Frank J. P. Van Rens 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).

  • Two-terminal switch circuit and voltage threshold responsive circuit component
    Patent number: 6700432
    Abstract: A two-terminal switch circuit (1) for periodically energizing a load (20) from a voltage supply includes a controllable switch (4) connected between the switch terminals (2,3), a resistance (8) and a capacitor (9) connected in series between the terminals (2,3), and a voltage threshold responsive arrangement (26) having a hysterisis characteristic. The voltage threshold responsive arrangement has a signal input (27) and a power supply input (29) connected to the common point (12) of the resistance and the capacitor, and a signal output (28) connected to a control input (13) of the controllable switch. The voltage threshold responsive arrangement is powered by the capacitor voltage. The threshold responsive arrangement closes the switch when the capacitor charges to a first threshold voltage and opens the switch when the capacitor thereafter discharges to a second threshold voltage which is lower than the first threshold voltage.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: March 2, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Johannes A. C. Misdom, Johannes L. M. Verhees, Jozef J. M. Hulshof, Frank J. P. Van Rens
  • Two-terminal switch circuit and voltage threshold responsive circuit component
    Publication number: 20020043998
    Abstract: A two-terminal switch circuit (1) for inclusion in series with a load (20) across a voltage supply (63) for periodically energizing the load (20) from the supply (63) comprises a controllable switch (4) connected between the terminals (2,3), a resistance (8) and a capacitor (9) connected in series between the terminals (2,3), and a voltage threshold responsive arrangement (26) the output signal/input signal characteristic of which exhibits hysteresis. The voltage threshold responsive arrangement (26) has a signal input (27) connected to the common point (12) of the resistance (8) and the capacitor (9), and a signal output (28) connected to a control input (13) of the controllable switch (4). A power supply input (29) of the voltage threshold responsive arrangement (26) is also connected to the common point (12) of the resistance (8) and the capacitor (9) so that the voltage threshold responsive arrangement (26) is powered from across the capacitor (9).
    Type: Application
    Filed: August 7, 2001
    Publication date: April 18, 2002
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Johannes A.C. Misdom, Johannes L.M. Verhees, Jozef J.M. Hulshof, Frank J.P. Van Rens