Patents by Inventor David J. Sousa

David J. Sousa 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).

  • Publication number: 20200370738
    Abstract: A spotlight controller including a housing having a first control axis, a fixed base configured to mate with the housing, the housing rotatable relative to the base about a second control axis substantially perpendicular to the first control axis, a handle configured to engage the housing and pivot about the first control axis, a housing sensor arranged to detect the position of the housing relative to the base and generate a housing position signal, a handle sensor arranged to detect the position of the handle relative to the housing and generate a handle position signal, and a controller operatively connected to the housing sensor and the handle sensor, wherein the controller receives the housing position signal and the handle position signal and generates spotlight control signals based on the housing position signal and the handle position signal.
    Type: Application
    Filed: August 11, 2020
    Publication date: November 26, 2020
    Inventors: David J. SOUSA, Kevin M. SMITH, Sean BROWN, Tomasz J. WALCZAK
  • Publication number: 20200341180
    Abstract: The disclosed light directing article has an optical element and a conformal retarder with predefined thickness that contours with the optical element. In one aspect, the light directing article is a retroreflective article, which further comprises a phase reversing optical reflector.
    Type: Application
    Filed: October 26, 2018
    Publication date: October 29, 2020
    Inventors: Kui CHEN-HO, Michael A. MCCOY, John A. WHEATLEY, Susannah C. CLEAR, Michelle L. TOY, Alex P. PONGRATZ, Matthew E. SOUSA, Matthew B. JOHNSON, Gilles BENOIT, David J.W. AASTUEN, Guanglei DU, Tien Yi T.H. WHITING, Kevin W. GOTRIK, Christopher A. MERTON, Ying XIA, Olester BENSON, JR., Charles A. SHAKLEE, Travis L. POTTS, Carla S. THOMAS
  • Patent number: 10775029
    Abstract: A spotlight system including a spotlight continuously rotatable about a spotlight pan axis and tiltable about a spotlight tilt axis. The system includes a spotlight controller including a housing continuously rotatable about a controller pan axis. The housing has a circumferential lip that engages with a fixed based and a hub engaged with a handle. The handle rotates about a controller tilt axis perpendicular to the controller pan axis. A controller board is electrically connected to a slip ring that penetrates the base, with a pan input sensor, a tilt input sensor, and a microprocessor. The pan input sensor measures the position of the housing relative to the base, the tilt input sensor measures the position of the handle relative to the housing, and the microcontroller interprets the positions and generates control signals corresponding to the direction of a spotlight.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: September 15, 2020
    Assignee: WHELEN ENGINEERING COMPANY, INC.
    Inventors: David J. Sousa, Kevin M. Smith, Sean Brown, Tomasz J. Walczak
  • Patent number: 10728013
    Abstract: A half-duplex communication system includes a first half-duplex transceiver. The first half-duplex transceiver includes a first microprocessor and a current sensor connected to an input of the microprocessor, and the half-duplex transceiver is coupled to a first and second voltage source. The first voltage source is at a first voltage level and the second voltage source is at a second voltage level. The first microprocessor is configured to transmit data by alternatively connecting the first voltage source and the second voltage source to a conductor and to receive data in the form of pulses of current on the conductor detected by said current sensor.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: July 28, 2020
    Assignee: Whelen Engineering Company, Inc.
    Inventor: David J. Sousa
  • Publication number: 20190368702
    Abstract: A spotlight system including a spotlight continuously rotatable about a spotlight pan axis and tiltable about a spotlight tilt axis. The system includes a spotlight controller including a housing continuously rotatable about a controller pan axis. The housing has a circumferential lip that engages with a fixed based and a hub engaged with a handle. The handle rotates about a controller tilt axis perpendicular to the controller pan axis. A controller board is electrically connected to a slip ring that penetrates the base, with a pan input sensor, a tilt input sensor, and a microprocessor. The pan input sensor measures the position of the housing relative to the base, the tilt input sensor measures the position of the handle relative to the housing, and the microcontroller interprets the positions and generates control signals corresponding to the direction of a spotlight.
    Type: Application
    Filed: June 4, 2019
    Publication date: December 5, 2019
    Inventors: David J. Sousa, Kevin M. Smith, Sean Brown, Tomasz J. Walczak
  • Publication number: 20190372745
    Abstract: A half-duplex communication system includes a first half-duplex transceiver. The first half-duplex transceiver includes a first microprocessor and a current sensor connected to an input of the microprocessor, and the half-duplex transceiver is coupled to a first and second voltage source. The first voltage source is at a first voltage level and the second voltage source is at a second voltage level. The first microprocessor is configured to transmit data by alternatively connecting the first voltage source and the second voltage source to a conductor and to receive data in the form of pulses of current on the conductor detected by said current sensor.
    Type: Application
    Filed: June 1, 2018
    Publication date: December 5, 2019
    Inventor: David J. Sousa
  • Patent number: 9738217
    Abstract: A modular vehicle light comprises multiple elongated modules which are disposed in end-to-end relationship. The modules are mechanically joined and electrically connected in series. The modules are preferably substantially identical. Each module contains a power board with a microprocessor and a buffer. The microprocessor transmits signals to a matrix of LEDs. The LEDs emit light which transverses an optical assembly to form a narrow band of illumination. In one embodiment, a linear matrix of 36 LEDs comprising 3 color groups of LEDs is employed. Fasteners captured in a bracket at the rear of the module fasten the vehicle light to the vehicle.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: August 22, 2017
    Assignee: Whelen Engineering Company, Inc.
    Inventors: Lauren Bradley, David J. Sousa
  • Patent number: 8201974
    Abstract: The disclosed pan-tilt spotlight is a sealed, remote controlled unit which allows continuous 360° rotation (pan) of visible or infrared (IR) light sources as well as vertical (tilt) aiming of the light sources 65° above horizontal and 25° below horizontal. The light sources are solid state (LEDs) which are energy efficient and extremely durable in the field, requiring little maintenance. Light shields are employed to control stray light, thereby enhancing the stealth of the spotlight in covert operations. The rotating parts of the spotlight are supported at several locations spaced from the axis of rotation in a manner that re-directs forces that would otherwise be carried by the shaft. Temperature sensitive current regulators and robust thermal design protect the LEDs from heat damage. Sophisticated motor control allows fast and precise positioning of the light beam and worm final drive gears keep the light beam in position.
    Type: Grant
    Filed: March 9, 2010
    Date of Patent: June 19, 2012
    Assignee: Whelen Engineering Company, Inc.
    Inventors: Kevin M. Smith, David J. Sousa, James L. Stopa
  • Patent number: 6318886
    Abstract: A high intensity light source employs a plurality of light emitting diodes associated with a unitary reflector subassembly. The reflector subassembly defines an array of frustoconical reflectors arranged in rows and columns with the adjacent reflectors of each row being connected by a diverging slot with reflective wall surfaces. The light emitting diodes are mounted on a printed circuit board which forms a component of heat sink subassembly.
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: November 20, 2001
    Assignee: Whelen Engineering Company
    Inventors: James L. Stopa, David J. Sousa
  • Patent number: D866486
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: November 12, 2019
    Assignee: WHELEN ENGINEERING COMPANY, INC.
    Inventors: Sean Brown, David J. Sousa, Kevin M. Smith, Tomasz J. Walczak
  • Patent number: D883238
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: May 5, 2020
    Assignee: WHELEN ENGINEERING COMPANY, INC.
    Inventors: Sean Brown, David J. Sousa, Kevin M. Smith, Tomasz J. Walczak
  • Patent number: D905311
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: December 15, 2020
    Assignee: WHELEN ENGINEERING COMPANY, INC.
    Inventors: Kevin M. Smith, David J. Sousa, Sean Brown, Tomasz J. Walczak