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).
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Publication number: 20150158422Abstract: 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: ApplicationFiled: December 6, 2013Publication date: June 11, 2015Applicant: DELPHI TECHNOLOGIES, INC.Inventors: Jerry Lee Trevillian, JR., David L. Witham
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Publication number: 20080227320Abstract: 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: ApplicationFiled: April 1, 2008Publication date: September 18, 2008Inventors: David L. Witham, Roberto E. Arance, Keith M. Crawford, Michael A. Pedersen, Michael A. Jacques
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Patent number: 7421851Abstract: 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: GrantFiled: July 12, 2006Date of Patent: September 9, 2008Assignee: 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
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Patent number: 7354317Abstract: 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 supType: GrantFiled: November 16, 2006Date of Patent: April 8, 2008Assignee: Ultraviolet Devices, Inc.Inventors: David L. Witham, Roberto E. Arance, Keith M. Crawford, Michael A. Pedersen, Michael A. Jacques
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Patent number: 7229195Abstract: 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: GrantFiled: November 23, 2005Date of Patent: June 12, 2007Assignee: Ultraviolet Devices, Inc.Inventors: David L. Witham, Robert Arance
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Patent number: 7137728Abstract: 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: GrantFiled: January 9, 2004Date of Patent: November 21, 2006Assignee: Ultraviolet Devices, Inc.Inventors: David L. Witham, Roberto E. Arance, Keith M. Crawford, Michael A. Pedersen
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Patent number: 7107778Abstract: 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: GrantFiled: September 15, 2000Date of Patent: September 19, 2006Inventors: David L. Witham, Thomas M. Veloz, Thomas C. Bowles, Roberto Arance, Keith Crawford, Jon W. Orr, Richard N. Metzger, Larry F. Randall
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Patent number: 6979103Abstract: 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: GrantFiled: October 1, 2003Date of Patent: December 27, 2005Assignee: Ultraviolet Devices, Inc.Inventors: David L. Witham, Robert Arance
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Publication number: 20040141332Abstract: 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: ApplicationFiled: January 9, 2004Publication date: July 22, 2004Inventors: David L. Witham, Roberto E. Arance, Keith M. Crawford, Michael A. Pedersen
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Patent number: 6670626Abstract: 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: GrantFiled: June 25, 2002Date of Patent: December 30, 2003Assignee: UltraViolet Devices, Inc.Inventors: David L. Witham, Robert Arrance
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Publication number: 20030001113Abstract: 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: ApplicationFiled: June 25, 2002Publication date: January 2, 2003Applicant: Ultra Violate, a California CorporationInventors: David L. Witham, Robert Arance
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Patent number: 5575638Abstract: 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: GrantFiled: January 12, 1995Date of Patent: November 19, 1996Assignee: Thermador CorporationInventors: David L. Witham, Michael W. Barbato
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Patent number: D684671Type: GrantFiled: January 18, 2012Date of Patent: June 18, 2013Assignee: Ultraviolet Devices, IncInventors: Filiberto Betancourt, Richard A. Hayes, Ashish Mathur, Rita H. Rivas, Lev V. Rotkop, Aleksandr Shostak, David L. Witham, Jose Vasquez, Peter Veloz
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Patent number: D933556Type: GrantFiled: December 18, 2018Date of Patent: October 19, 2021Assignee: Aptiv Technologies LimitedInventors: David L. Witham, Jerry L. Trevillian, Jr.