Patents by Inventor David John Hamilton

David John Hamilton 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).

  • Remote Confined Work Space Monitoring System and Method
    Publication number: 20200273315
    Abstract: A system and method for remotely monitoring confined work spaces. The system can have subcomponents including a badging station for recording ingress and egress in and out of the work space, intercom systems for inside and outside of the work space, alarm systems inside and outside of the work space, cameras located inside and outside of the work space, and a gas detector for detecting gases in the work space. The subcomponents can be connected to a control panel that can relay data and communications to and from the subcomponents to a central dispatch center.
    Type: Application
    Filed: February 26, 2020
    Publication date: August 27, 2020
    Inventors: Darren Dean LaRocque, Carey Shawn Chonkolay, Roberto Alejandro Paredes, David John Hamilton
  • Transmission meter, a method of measuring transmittance and a disinfection apparatus
    Patent number: 6791092
    Abstract: A transmission meter (1) and a method for measuring the transmittance of a fluid, the meter (1) comprises an analysis chamber for passage of the fluid therethrough, means for receiving an electromagnetic source (9) within said chamber and three sensors (D1, D2 and D3) each configured to measure the output from said source (9), wherein each of the three sensors (D1, D2 and D3) are located at different distances from the source (9). The transmission meter may be used in a disinfection system either to measure the transmittance of the untreated water or to measure the transmittance of the water as it is purified.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: September 14, 2004
    Assignee: Hanovia Limited
    Inventor: David John Hamilton
  • Transmission meter, a method of measuring transmittance and a disinfection apparatus
    Publication number: 20010046461
    Abstract: A transmission meter (1) and a method for measuring the transmittance of a fluid, the meter (1) comprises an analysis chamber for passage of the fluid therethrough, means for receiving an electromagnetic source (9) within said chamber and three sensors (D1, D2 and D3) each configured to measure the output from said source (9), wherein each of the three sensors (D1, D2 and D3) are located at different distances from the source (9). The transmission meter may be used in a disinfection system either to measure the transmittance of the untreated water or to measure the transmittance of the water as it is purified.
    Type: Application
    Filed: February 27, 2001
    Publication date: November 29, 2001
    Inventor: David John Hamilton