Patents by Inventor David L. Witham

David L. 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).

  • Publication number: 20150158422
    Abstract: A vehicle instrument panel assembly that includes a light-pipe configured to guide light emitted from a light source to a location on the assembly remote from the light source. The light-pipe is advantageously cut from a sheet of light-transmissive material using a laser.
    Type: Application
    Filed: December 6, 2013
    Publication date: June 11, 2015
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: Jerry Lee Trevillian, JR., David L. Witham
  • Publication number: 20080227320
    Abstract: A system and a method for keying lamps which involve a lamp keying device, such as a keying device with a base protruding key having a configuration, e.g.
    Type: Application
    Filed: April 1, 2008
    Publication date: September 18, 2008
    Inventors: David L. Witham, Roberto E. Arance, Keith M. Crawford, Michael A. Pedersen, Michael A. Jacques
  • Patent number: 7421851
    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: Grant
    Filed: July 12, 2006
    Date of Patent: September 9, 2008
    Assignee: UltraViolet Devices, Inc.
    Inventors: David L. Witham, Thomas M. Veloz, Thomas C. Bowles, Roberto Arance, Keith Crawford, Jon W. Orr, Richard N. Metzger, Larry F. Randall
  • Patent number: 7354317
    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: Grant
    Filed: November 16, 2006
    Date of Patent: April 8, 2008
    Assignee: Ultraviolet Devices, Inc.
    Inventors: David L. Witham, Roberto E. Arance, Keith M. Crawford, Michael A. Pedersen, Michael A. Jacques
  • Patent number: 7229195
    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: Grant
    Filed: November 23, 2005
    Date of Patent: June 12, 2007
    Assignee: Ultraviolet Devices, Inc.
    Inventors: David L. Witham, Robert Arance
  • Patent number: 7137728
    Abstract: Provided are exemplary embodiments of a system and method for allowing predetermined and/or preconfigured lamp assemblies to be utilized with lamp fixtures. The exemplary embodiments may include a fixture assembly, a key configured to couple to the lamp fixture, and a lamp assembly including a base with a receiving structure, wherein the receiving structure is configured to engage the key, such that only predetermined lamp assemblies may couple to the fixture assembly.
    Type: Grant
    Filed: January 9, 2004
    Date of Patent: November 21, 2006
    Assignee: Ultraviolet Devices, Inc.
    Inventors: David L. Witham, Roberto E. Arance, Keith M. Crawford, Michael A. Pedersen
  • Patent number: 7107778
    Abstract: A device (20) for Disinfection of HVAC Systems that include features that will protect service personnel from un-intended exposure to ultra violet radiation. The safeguards include an interlock (70) that prevents illumination of germicidal lamps (80) when an enclosure within which the germicidal lamps (80) are mounted is not properly attached to a duct or appliance; the apparatus further provides for innovative methods for determining that the germicidal lamps (80) are operating.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: September 19, 2006
    Inventors: David L. Witham, Thomas M. Veloz, Thomas C. Bowles, Roberto Arance, Keith Crawford, Jon W. Orr, Richard N. Metzger, Larry F. Randall
  • Patent number: 6979103
    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: Grant
    Filed: October 1, 2003
    Date of Patent: December 27, 2005
    Assignee: Ultraviolet Devices, Inc.
    Inventors: David L. Witham, Robert Arance
  • Publication number: 20040141332
    Abstract: Provided are exemplary embodiments of a system and method for allowing predetermined and/or preconfigured lamp assemblies to be utilized with lamp fixtures. The exemplary embodiments may include a fixture assembly, a key configured to couple to the lamp fixture, and a lamp assembly including a base with a receiving structure, wherein the receiving structure is configured to engage the key, such that only predetermined lamp assemblies may couple to the fixture assembly.
    Type: Application
    Filed: January 9, 2004
    Publication date: July 22, 2004
    Inventors: David L. Witham, Roberto E. Arance, Keith M. Crawford, Michael A. Pedersen
  • Patent number: 6670626
    Abstract: Interlocking, modular anti-microbial Radiation fixtures mount on a custom rack or bracket, which are used to irradiate an air stream and/or surfaces within an HVAC (heating, ventilating, air conditioning) system. The individual units are adapted for modular integration and slidable mounting on a rack, bracket or fixture which allows for ease of installation.
    Type: Grant
    Filed: June 25, 2002
    Date of Patent: December 30, 2003
    Assignee: UltraViolet Devices, Inc.
    Inventors: David L. Witham, Robert Arrance
  • Publication number: 20030001113
    Abstract: Interlocking, modular anti-microbial Radiation fixtures mount on a custom rack or bracket, which are used to irradiate an air stream and/or surfaces within an HVAC (heating, ventilating, air conditioning) system. The individual units are adapted for modular integration and slidable mounting on a rack, bracket or fixture which allows for ease of installation.
    Type: Application
    Filed: June 25, 2002
    Publication date: January 2, 2003
    Applicant: Ultra Violate, a California Corporation
    Inventors: David L. Witham, Robert Arance
  • Patent number: 5575638
    Abstract: A burner control provides a pulsed flame sequence in response to a user's selective manipulation of an actuator through a range of response. A microcontroller-based control module switches both a burner ignitor control and an electric valve for gas supply to the burner in a predetermined time sequence depending upon the actuator position within the predetermined range. Preferably, one or more of a plurality of burners on a single cooking top are controlled for pulsed sequence operation, and a single actuator for each channel, preferably in a form of a rotary knob, provides a simple user interface for utilizing the pulsed flame sequence, preferably in a low gas flow or simmer cooking range.
    Type: Grant
    Filed: January 12, 1995
    Date of Patent: November 19, 1996
    Assignee: Thermador Corporation
    Inventors: David L. Witham, Michael W. Barbato
  • Patent number: D684671
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: June 18, 2013
    Assignee: Ultraviolet Devices, Inc
    Inventors: Filiberto Betancourt, Richard A. Hayes, Ashish Mathur, Rita H. Rivas, Lev V. Rotkop, Aleksandr Shostak, David L. Witham, Jose Vasquez, Peter Veloz
  • Patent number: D933556
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: October 19, 2021
    Assignee: Aptiv Technologies Limited
    Inventors: David L. Witham, Jerry L. Trevillian, Jr.