Patents Represented by Attorney Robert T. Mayer
  • Patent number: 5150018
    Abstract: The combination of a fluorescent lamp with a grid between its electrodes and control equipment for operating the lamp in an on condition and an off condition by the application of pulses to the grid.
    Type: Grant
    Filed: August 12, 1991
    Date of Patent: September 22, 1992
    Assignee: North American Philips Corporation
    Inventors: Gert W. Bruning, Leo F. Casey, Paul R. Veldman, Klaus Vegter
  • Patent number: 5142201
    Abstract: A circuit arrangement comprising a DC/AC converter for supplying power to a lamp upon receiving energy from a DC voltage source; the converter includes a branch A having at least one switching element and a control branch connected to the switching element; the control branch comprises a coil shunted by a capacitor; the circuit arrangement also includes a load branch with an inductor connected to a parallel arrangement of an inductance and capacitance.
    Type: Grant
    Filed: August 27, 1991
    Date of Patent: August 25, 1992
    Assignee: U.S. Philips Corporation
    Inventor: Johannes H. Wessels
  • Patent number: 5138295
    Abstract: A transformer in which the tops and bottoms of both the primary and secondary coils are insulated from the magnetic circuit by substantially flat plate plastic insulators adjacent both the top and bottom of both coils.
    Type: Grant
    Filed: October 17, 1991
    Date of Patent: August 11, 1992
    Assignee: North American Philips Corporation
    Inventors: John A. Larson, Henry Pikul
  • Patent number: 5132870
    Abstract: A starting and operating circuit for a discharge lamp in which the ballast reactance includes first, second and third coil segments with the third coil segment comprising part of the ignitor circuit and being electrically connected between the first and second coil segments.
    Type: Grant
    Filed: April 29, 1991
    Date of Patent: July 21, 1992
    Assignee: North American Philips Corporation
    Inventor: Joseph S. Droho
  • Patent number: 5130613
    Abstract: A fluorescent lighting arrangement including a lamp controller for controlling the light intensity of fluorescent lamps in response to a motion detecting arrangement which receives its operating voltage from the lamp controller.
    Type: Grant
    Filed: October 17, 1990
    Date of Patent: July 14, 1992
    Assignee: North American Philips Corporation
    Inventor: Stefan F. Szuba
  • Patent number: 5118998
    Abstract: A multi-tap ballast including wires of two gauges connected to each other to provide a smaller package than previously could be obtained.
    Type: Grant
    Filed: July 10, 1989
    Date of Patent: June 2, 1992
    Assignee: North American Philips Corporation
    Inventor: Glenn D. Garbowicz
  • Patent number: 5118992
    Abstract: A method for controlling the luminescence of a fluorescent lamp in which a light sensor operates in response to light other than that from the fluorescent lamp striking it to increase the luminescence of the lamp.
    Type: Grant
    Filed: April 17, 1990
    Date of Patent: June 2, 1992
    Assignee: North American Philips Corporation
    Inventor: Stefan F. Szuba
  • Patent number: 5117208
    Abstract: A new single pole circuit breaker, intended for use in a multipole circuit breaker, is disclosed. Among other distinctions, upon being tripped, a relatively large torque is imparted to the trip lever of the single pole circuit breaker. This is achieved by interacting the contact bar stop pin on the contact bar of the single pole circuit breaker with a camming surface on the trip lever. In addition, when pivotal motion is imparted to the trip lever by an external agent, the trip lever directly engages the toggle mechanism of the circuit breaker, to collapse the toggle mechanism and produce tripping. Moreover, the trip lever has a configuration which permits convenient pivotal mounting to a frame.
    Type: Grant
    Filed: May 21, 1990
    Date of Patent: May 26, 1992
    Assignee: North American Philips Corporation
    Inventor: Ramesh G. Nar
  • Patent number: 5111118
    Abstract: A controller operates in pre-ignition and ignition phases to obtain stable and reliable control of operation of a half-bridge DC-AC converter in a frequency range which is offset from a resonant frequency of an output circuit which includes a transformer and capacitors and which couples the converter to a fluorescent lamp load. The converter is supplied with a DC voltage from a switched-mode DC-DC supply of a pre-conditioner circuit which responds to a full-wave rectified AC voltage and which is supplied with pulse-width modulated gating pulses from the controller, preferably at a frequency which is the same as that of the converter. The controller monitors signals from the output circuit and pre-conditioner circuits and exercises control to reliable starting and highly efficient lamp operation and to obtain an in-phase proportional relationship of input voltage and current wave forms.
    Type: Grant
    Filed: August 12, 1991
    Date of Patent: May 5, 1992
    Assignee: North American Philips Corporation
    Inventors: Mark W. Fellows, John M. Wong, Edmond Toy, Robert A. Erhardt, James A. Thomsen, Jr.
  • Patent number: 5103153
    Abstract: Control equipment for motors having two windings and wherein both windings are temporarily connected in parallel to start the motor.
    Type: Grant
    Filed: November 2, 1988
    Date of Patent: April 7, 1992
    Assignee: North American Philips Corporation
    Inventor: Joseph S. Droho
  • Patent number: 5099176
    Abstract: A fluorescent lamp control system operable from either an AC power supply of a first frequency or a power supply of a second frequency and which operates the lamp in a dimmed condition when the power supply is that of the second frequency.
    Type: Grant
    Filed: April 6, 1990
    Date of Patent: March 24, 1992
    Assignee: North American Philips Corporation
    Inventors: Mark W. Fellows, John R. Shannon
  • Patent number: 5089753
    Abstract: An electronic ballast which will repeatedly try to ignite gas discharge lamps should they fail to ignite under conditions in which they should have ignited together with means rendering said electronic ballast incapable of trying to ignite said lamps after a predetermined period and said electronic ballast being rendered capable of again trying to ignite said lamps under prescribed conditions.
    Type: Grant
    Filed: July 9, 1990
    Date of Patent: February 18, 1992
    Assignee: North American Philips Corporation
    Inventor: Charles B. Mattas
  • Patent number: 5089751
    Abstract: This invention relates to fluorescent lamp controllers and dimming controls for use therewith and more particularly to the provision of a dimming control which provides protective isolation between input terminals and lamp energizing circuitry and which facilitates accurate and safe control of light intensity over a wide range. The invention provides dimming controls which are efficient and highly reliable and are readily and economically available.
    Type: Grant
    Filed: October 31, 1990
    Date of Patent: February 18, 1992
    Assignee: North American Philips Corporation
    Inventors: John M. Wong, Michael A. Kurczak
  • Patent number: 5072156
    Abstract: An arrangement for use with gaseous discharge lamp circuits having power factor capacitors in which the capacitor is disconnected from the circuit when the lamp is not drawing current.
    Type: Grant
    Filed: November 29, 1990
    Date of Patent: December 10, 1991
    Assignee: North American Philips Corporation
    Inventor: Joseph S. Droho
  • Patent number: 5068573
    Abstract: A power supply with energy storage means in the form of two capacitors with energy storage means provides improved voltage regulation for the power supply and also serves to store the energy contained in voltage spikes that could otherwise deleteriously effect the power supply.
    Type: Grant
    Filed: September 20, 1990
    Date of Patent: November 26, 1991
    Assignee: North American Philips Corporation
    Inventors: Gert W. Bruning, Paul R. Veldman
  • Patent number: 5066935
    Abstract: A circuit breaker is constructed to maximize the range of current over which it may operate, and to enhance its safety of operation in both single-pole and multipole embodiments. Improved operating devices are disclosed for both the manual and automatic modes of operation in single-pole or multipole embodiments.
    Type: Grant
    Filed: February 5, 1991
    Date of Patent: November 19, 1991
    Assignee: North American Philips Corporation
    Inventor: George S. Harper
  • Patent number: 5051664
    Abstract: A starting and operating circuit for a discharge lamp in which the ballast reactance includes first, second and third coil segments with the third coil segment comprising part of the ignitor circuit and being electrically connected between the first and second coil segments.
    Type: Grant
    Filed: January 3, 1991
    Date of Patent: September 24, 1991
    Inventor: Joseph S. Droho
  • Patent number: 5039914
    Abstract: A control circuit for a dimmer which receives all of its operating power through the control terminals from the dimmer of the fluorescent lamp to which said dimmer is connected.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: August 13, 1991
    Assignee: North American Philips Corporation
    Inventor: Stefan F. Szuba
  • Patent number: 5013970
    Abstract: A rapid start fluorescent system which has its starting capacitance connected to a tap on the secondary of the ballast transformer which tap is located at a predetermined number of turns of the secondary.
    Type: Grant
    Filed: December 28, 1988
    Date of Patent: May 7, 1991
    Assignee: North American Philips Corporation
    Inventor: Joseph A. Crawford
  • Patent number: 5007539
    Abstract: A packing of small components, in which at least one small component (9) is packed by means of a packing body (1) having a multilayer construction and comprising a relatively non-deformable base plate (3) and a thermoplastically deformable elastic carrier layer (5) fixedly connected to the base plate, the small component (9) being depressed into the heated carrier layer (5) thereby forming a nest by thermoplastic deformation of the carrier layer.
    Type: Grant
    Filed: April 9, 1990
    Date of Patent: April 16, 1991
    Assignee: U.S. Philips Corporation
    Inventor: Hans-Werner Ruter