Patents Represented by Attorney, Agent or Law Firm James Angelhart
  • Patent number: 6786617
    Abstract: A light emitting diode assembly consisting of separate dies, individually mounted or commonly packaged into one assembly providing an energy spectrum compliant with a night vision imaging system standard, such as NVIS Green A class A. The light emitting diode combination or assembly does not require any external filtering and/or fluorescent material to achieve the NVIS Green A class A chromaticity and radiance requirements. An optical filter absorbing part of visible energy to improve radiance performance. A conformal coating including an absorbing agent for filtering small infrared emissions may be used for improving compliance performance. Use of light emitting diode with conformal coating with absorbing for compliance to NVIS Green B, class A.
    Type: Grant
    Filed: January 29, 2003
    Date of Patent: September 7, 2004
    Assignee: CMC Electronique Inc.
    Inventors: Eric Lemay, Sylvain Demers, Bruno Pavan
  • Patent number: 6669257
    Abstract: A power switching mechanism for selectively connecting a robotic system having two-degrees-of-freedom power input to a robot tool having a plurality of actuators. The two-degrees-of-freedom power input comprises a translation power input and a power shaft rotation input. The switching mechanism comprises an axially displaceable connector mounted to the power shaft rotation input for rotating therewith. An indexing mechanism is connected to the power shaft rotation input and is axially movable sequentially between a neutral position and an actuator engaging position for each actuator. The axially displaceable connector engages any one of the actuators in response to movement of the axial translation of the two-degrees-of-freedom power input.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: December 30, 2003
    Assignee: Université Laval
    Inventors: Thierry Laliberté, Clément Gosselin
  • Patent number: 6561151
    Abstract: A method for starting a car engine remotely by sensing the car battery voltage using an algorithm that can adjust its K value on a regular basis whenever the remote control is put into learn mode and a manual sequence is carried out prior to starting the car remotely. The device is highly reliable and easy to install due to a reduction in the amount of wires necessary for its installation and functioning. The device can be used for a wide variety of vehicles.
    Type: Grant
    Filed: August 22, 2000
    Date of Patent: May 13, 2003
    Assignee: 3061868 Canada Inc.
    Inventors: Jack Wisnia, Jean-Pierre Lavoie
  • Patent number: 6556141
    Abstract: An apparatus for flameout detection to be used with a furnace having a sight hole tube for inspection of a flame. The apparatus comprises a fixed portion adapted for being mounted to the sight hole tube and being electrically connected to a control system. The fixed portion defines a first see-through channel being positioned opposite a sight hole of the sight hole tube, whereby the flame is visible therethrough. A detachable portion has a sensor device disposed therein a second see-through channel. The detachable portion is releasably mounted to the fixed portion such as to engage a contact connection therewith. The sensor device is disposed opposite the first see-through channel of the fixed portion for flameout detection therethrough, wherein the detachable portion is electrically disconnected upon being detached from the fixed portion.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: April 29, 2003
    Assignee: PIA Procédé Industriel Automatisé Inc.
    Inventors: Daniel Ouellette, Roland Fabry
  • Patent number: 5978131
    Abstract: The amplifier is a two-stage amplifier in which dispersion compensation and WDM channel equalization are carried out using a plurality of in-waveguide Bragg gratings placed between the two stages. The first stage has a gain able to raise the intensity of WDM optical communications signals to a high enough level that after dispersion compensation and equalization, the signals fed into the second stage nearly or substantially saturate the second stage amplifier. The noise figure signal-to-noise ratio is thereby of good quality since there are no significant losses at the signal input of the signal into the optical amplifier. Erbium-doped optically pumped fiber amplifiers are used for the two stages. An add/drop filter can be appended to the end of the conditioning Bragg gratings. Residual optical signal from the fiber Bragg grating may be used to optically pump another amplifier for amplifying longer wavelength optical signals.
    Type: Grant
    Filed: April 7, 1998
    Date of Patent: November 2, 1999
    Assignee: Institut National D'Optique
    Inventors: Jocelyn Lauzon, Martin Guy