Patents by Inventor Peter M. S. M. Heijmans

Peter M. S. M. Heijmans 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).

  • Optical disc record system and method, and an optical pickup actuator unit for such a system
    Patent number: 8046784
    Abstract: An optical disc record system comprising an optical pickup actuator unit for transferring data to and/or from a rotating optical disc. The optical pickup actuator unit comprises a fixed part (1) and a movable part (2) carrying an objective lens (4) for focusing a light beam on the optical disc. The movable part (2) is connected to the fixed part (1) by a number of substantially parallel elastic suspension wires (5). The movable part (2) is provided with a number of coils (8, 9, 15, 16, 17) of electrically conductive wires, which coils (8, 9, 15, 16, 17) are at least partly present in a magnetic field generated by magnets (10, 11, 18). At least one electrically conductive stranded wire (22, 23) is present between said fixed part (1) and said movable part (2) in order to feed electric current to at least one coil (16, 17).
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: October 25, 2011
    Assignee: Arima Devices Corporation
    Inventors: Pushpakath Madan, Peter M. S. M. Heijmans, Michael Maris
  • Optical Disc Record System And Method, And An Optical Pickup Actuator Unit For Such A System
    Publication number: 20080165664
    Abstract: An optical disc record system comprising an optical pickup actuator unit for transferring data to and/or from a rotating optical disc. The optical pickup actuator unit comprises a fixed part (1) and a movable part (2) carrying an objective lens (4) for focusing a light beam on the optical disc. The movable part (2) is connected to the fixed part (1) by a number of substantially parallel elastic suspension wires (5). The movable part (2) is provided with a number of coils (8, 9, 15, 16, 17) of electrically conductive wires, which coils (8, 9, 15, 16, 17) are at least partly present in a magnetic field generated by magnets (10, 11, 18). At least one electrically conductive stranded wire (22, 23) is present between said fixed part (1) and said movable part (2) in order to feed electric current to at least one coil (16, 17).
    Type: Application
    Filed: January 18, 2006
    Publication date: July 10, 2008
    Applicant: ARIMA DEVICES CORPORATION
    Inventors: Pushpakath Madan, Peter M.S.M. Heijmans, Michael Maris
  • Method of and electronic circuit for starting a reluctance motor and reluctance motor provided with such an electronic circuit
    Patent number: 4795953
    Abstract: A reluctance motor comprises a stator (S) provided with coils (W1, W2), and a rotor (R). The rotor R has pairs of positions of stable equilibrium and pairs of positions of unstable equilibrium. The reluctance motor is started by first bringing the rotor into a first position of stable equilibrium (.theta.=-.theta.ms) by means of a first energizing current and subsequently rotating it towards a second (.theta.=0) of stable equilibrium by means of a second energizing current.
    Type: Grant
    Filed: July 2, 1987
    Date of Patent: January 3, 1989
    Assignee: U.S. Philips Corporation
    Inventors: Johan C. Compter, Peter M. S. M. Heijmans