Patents by Inventor David Witham

David Witham 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).

  • Patent number: 10328168
    Abstract: This invention employs a computer system or a programmable logic controller (computer) with a specific wireless communication protocol (BLE) to allow for remote connectivity of the germicidal UV device to display the status of the disinfection cycle and to operate the device and send and transfer data wirelessly to the Cloud via the BLE interface. A dose sensitive coupon, which can undergo color change in response to UV dosage, can also be used.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: June 25, 2019
    Assignee: ULTRAVIOLET DEVICES, INC.
    Inventors: Peter Veloz, Ashish Mathur, Aleksandr Shostak, Richard Hayes, David Witham, Mitch Babkes, Filiberto Betancourt, Lev Rotkop, Stuart Tyrrell, Walt Maclay, Dan Brown
  • Patent number: 9666424
    Abstract: This invention employs a programmable logic controller (computer) with a specific wireless communication protocol (BLE) to allow for remote connectivity of the germicidal UV device to display the status of the disinfection cycle and to operate the device and send and transfer data wirelessly to the Cloud via the BLE interface.
    Type: Grant
    Filed: February 15, 2016
    Date of Patent: May 30, 2017
    Assignee: ULTRAVIOLET DEVICES, INC.
    Inventors: Peter Veloz, Ashish Mathur, Aleksandr Shostak, Richard Hayes, David Witham, Mitch Babkes, Filiberto Betancourt, Lev Rotkop, Stuart Tyrrell, Walt Maclay, Dan Brown
  • Patent number: 9265174
    Abstract: This invention controls the temperature of the critical spot of the UV lamps and on the critical spots having a deposit of mercury or amalgam containing mercury by directing a uniform flow of air on and around the critical spots having amalgam or be other means to remove heat from the critical spots.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: February 16, 2016
    Assignee: ULTRAVIOLET DEVICES, INC.
    Inventors: Aleksandr Shostak, Ashish Mathur, Richard Hayes, Peter Veloz, David Witham, Filiberto Betancourt, Lev Rotkop
  • Publication number: 20150115170
    Abstract: This invention controls the temperature of the critical spot of the UV lamps and on the critical spots having a deposit of mercury or amalgam containing mercury by directing a uniform flow of air on and around the critical spots having amalgam or be other means to remove heat from the critical spots
    Type: Application
    Filed: July 7, 2014
    Publication date: April 30, 2015
    Inventors: Aleksandr Shostak, Ashish Mathur, Richard Hayes, Peter Veloz, David Witham, Filiberto Betancourt, Lev Rotkop
  • Publication number: 20070058367
    Abstract: A system and a method for keying lamps which involve a lamp keying device such as a keying device with at least one base protruding key being formed on the base and at least one support slot being formed in the lamp support receptacle, the at least one base protruding key detachably coupling with the at least one support slot; a keying device with at least one support protruding key being formed on the lamp support receptacle and at least one base slot being formed in the base, the at least one base slot detachably coupling with the at least one protruding support key; and a keying device with at least one base protruding key being formed on the base and at least one base slot being formed in the base, the keying device further having at least one complementary support protruding key being formed on the lamp support receptacle and at least one complementary support slot being formed in the lamp support receptacle, the at least one base protruding key detachably coupling with the at least one complementary sup
    Type: Application
    Filed: November 16, 2006
    Publication date: March 15, 2007
    Inventors: David Witham, Roberto Arance, Keith Crawford, Michael Pedersen, Michael Jacques
  • Publication number: 20060254298
    Abstract: An application and method for disinfecting HVAC systems that includes features for protecting service personnel from unintended exposure to ultraviolet radiation. The safeguards include an interlock that prevents illumination of germicidal lamps when their enclosure case is not properly attached to a duct.
    Type: Application
    Filed: July 12, 2006
    Publication date: November 16, 2006
    Inventors: David Witham, Thomas Veloz, Thomas Bowles, Roberto Arance, Keith Crawford, Jon Orr, Richard Metzger, Larry California
  • Publication number: 20060072318
    Abstract: A lamp standard for mounting in an air handling system composed of a stand having a plurality of channels wherein the channels span along the longitudinal axis of the stand and a plurality of lamp modules positioned over the channels. The lamp modules include a housing, a lamp bulb extending from the housing, and the wiring associated with the lamp modules are positioned within the channels. In use, the lamp standard can be installed within a heating, ventilation, or air conditioning (HVAC) system to minimize airborne and/or surface microorganism contaminants. The ultraviolet dosage delivered to the HVAC system can be controlled by varying the number of lamp standards, number of lamp modules coupled to the lamp standards, and spacing between the individual lamp standards.
    Type: Application
    Filed: November 23, 2005
    Publication date: April 6, 2006
    Inventors: David Witham, Robert Arance
  • Publication number: 20060011558
    Abstract: Exemplary embodiments provided herein include a system and method for disinfecting liquids, such as water in cooling towers. One embodiment may include one or more ultraviolet lamp assemblies submerged in a reservoir. Such lamp assemblies may be hermetically sealed from water in order to function properly and safely when submerged. Another embodiment may include a sleeve of quartz or UV transparent glass or both. The ultraviolet lamp, and the power lead may be protected from water. The sleeve may be sealed at each end, or a domed sleeve may be used with a watertight seal at the other end. Yet further embodiments may include a UV-transparent polymer material or both.
    Type: Application
    Filed: July 15, 2005
    Publication date: January 19, 2006
    Inventors: Forrest Fencl, David Witham
  • Publication number: 20050163652
    Abstract: A disinfecting system comprises a light source having output suitable for use as a germicidal agent, and a power supply for the light source that is adapted to limit the output of the light source to levels adequate for microbial growth control. The light source is operatively housed in fluid-conveying equipment for disinfecting fluids and surfaces therein. The limited output is attenuated by fluid-conveying equipment components disposed within the output range of the light source. The attenuated output provides safe human exposure levels in the vicinity of fluid intake and exhaust portions of the fluid-conveying equipment. The limited output inhibits the degradation of fluid-conveying equipment components disposed within the output range of the light source. The light source may be covered with a thin film or sleeve of material being semi-transparent to germicidal UV wavelengths to control the output of the light source.
    Type: Application
    Filed: January 11, 2005
    Publication date: July 28, 2005
    Inventors: Richard Metzger, Keith Crawford, David Witham
  • Publication number: 20050024867
    Abstract: A lamp standard for mounting in an air handling system composed of a stand having a plurality of channels wherein the channels span along the longitudinal axis of the stand and a plurality of lamp modules positioned over the channels. The lamp modules include a housing, a lamp bulb extending from the housing, and the wiring associated with the lamp modules are positioned within the channels. In use, the lamp standard can be installed within a heating, ventilation, or air conditioning (HVAC) system to minimize airborne and/or surface microorganism contaminants. The ultraviolet dosage delivered to the HVAC system can be controlled by varying the number of lamp standards, number of lamp modules coupled to the lamp standards, and spacing between the individual lamp standards.
    Type: Application
    Filed: October 1, 2003
    Publication date: February 3, 2005
    Inventors: David Witham, Robert Arance