Patents by Inventor David A. Pringle

David A. Pringle 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: 11554193
    Abstract: An apparatus for inactivating bioaerosol, comprising an enclosure having lumen walls forming a lumen, said lumen having a lumen input opening and a lumen output opening; a ventilator arranged for forcing an air flow through said lumen; in a cleaning section of said lumen, a source of ultraviolet light arranged to irradiate with ultraviolet light all the air passing through said lumen along a length of said cleaning section; an output muffler arranged for reducing a noise of said air flow in output of said lumen output opening; and a downstream turn section of said lumen, downstream said cleaning section of said lumen, arranged for changing a direction of said air flow such that no ultraviolet light in said cleaning section of said lumen is detectable at said lumen output opening.
    Type: Grant
    Filed: March 3, 2021
    Date of Patent: January 17, 2023
    Assignee: LUMINYS SYSTEMS CORP.
    Inventor: David A. Pringle
  • Publication number: 20220280675
    Abstract: An apparatus for inactivating bioaerosol, comprising an enclosure having lumen walls forming a lumen, said lumen having a lumen input opening and a lumen output opening; a ventilator arranged for forcing an air flow through said lumen; in a cleaning section of said lumen, a source of ultraviolet light arranged to irradiate with ultraviolet light all the air passing through said lumen along a length of said cleaning section; an output muffler arranged for reducing a noise of said air flow in output of said lumen output opening; and a downstream turn section of said lumen, downstream said cleaning section of said lumen, arranged for changing a direction of said air flow such that no ultraviolet light in said cleaning section of said lumen is detectable at said lumen output opening.
    Type: Application
    Filed: March 3, 2021
    Publication date: September 8, 2022
    Applicant: Luminys Systems Corp.
    Inventor: David A. Pringle
  • Publication number: 20130241421
    Abstract: A hybrid power supply for a high intensity light includes a power supply coupled to the high intensity light, wherein the power supply has a power rating less than a power rating for the high intensity light, and a battery, the battery having a power rating greater than or equal to the power rating for the high intensity light. A switch is coupled between the high intensity light and the battery, such that when the switch is closed the battery is coupled to the high intensity light, and such that when the switch is open the battery is not coupled to the high intensity light.
    Type: Application
    Filed: March 11, 2013
    Publication date: September 19, 2013
    Applicant: Luminys Systems Corp.
    Inventor: David Pringle
  • Patent number: 7948184
    Abstract: A vehicle testing lamp system comprising an onboard controller unit, an off-board controller unit, and a lamp fixture. The onboard controller unit comprises a solid state relay, the solid state relay being switchable between an idle output power setting and a high output power setting; a timing circuit,; a transfer circuit; a current sensor; a current regulator; and batteries or other auxiliary power supply. The off-board controller unit comprises a power supply electrically connected to a voltage booster circuit. The lamp fixture comprises an ignitor; a shock mount; and a lamp that is electrically connected to the igniter. The off-board controller supplies power to the lamp at its idle level. The onboard transfer circuit permits the off-board power supply to be disconnected while the onboard controller unit maintains the lamp at idle, and the onboard timing circuit limits the time that the lamp remains at high output. Also disclosed is a method for using a vehicle testing lamp system.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: May 24, 2011
    Assignee: Luminys Systems Corp.
    Inventors: David M. Heffelfinger, David A. Pringle, David B. McDonald, Ashot Nalbandyan
  • Publication number: 20080116814
    Abstract: A vehicle testing lamp system comprising an onboard controller unit, an off-board controller unit, and a lamp fixture. The onboard controller unit comprises a solid state relay, the solid state relay being switchable between an idle output power setting and a high output power setting; a timing circuit; a transfer circuit; a current sensor; a current regulator; and batteries or other auxiliary power supply. The off-board controller unit comprises a power supply electrically connected to a voltage booster circuit. The lamp fixture comprises an ignitor; a shock mount; and a lamp that is electrically connected to the igniter. The off-board controller supplies power to the lamp at its idle level. The onboard transfer circuit permits the off-board power supply to be disconnected while the onboard controller unit maintains the lamp at idle, and the onboard timing circuit limits the time that the lamp remains at high output. Also disclosed is a method for using a vehicle testing lamp system.
    Type: Application
    Filed: October 2, 2007
    Publication date: May 22, 2008
    Inventors: David M. Heffelfinger, David A. Pringle, David B. McDonald, Ashot Nalbandyan
  • Publication number: 20050246989
    Abstract: Some embodiments of the present invention provide a backsplash for protecting a first surface adjacent a work surface. In some embodiments, the backsplash includes a layer of tiles having a front surface exposed and resistant to byproducts of work performed on the work surface. In some embodiments, the layer of tiles are coupled together for installation and removal from the first surface as a single integral unit. Also, in some embodiments the backsplash includes a mount positioned to releasably and removably couple the backsplash to the first surface in at least one location between the backsplash and the first surface. The mount can retain the layer of tiles in a substantially perpendicular relationship with respect to the work surface when the backsplash is in the mounted position upon the first surface. Also, some embodiments of the present invention provide a method of releaseably coupling a backsplash to a first surface adjacent a work surface.
    Type: Application
    Filed: April 2, 2004
    Publication date: November 10, 2005
    Inventors: David Pringle, Kenneth Jonas, Donovan Gehring, Christopher Nemacheck, Karen Formico
  • Patent number: 6140778
    Abstract: Disclosed is a lower pressure xenon lamp (12) and the driver circuitry therefor for producing relatively short bursts of intense light from the lamp (12). The lamp (12), including its associated driver circuitry (50) can be used in theatrical, stage, movie and/or video production to simulate, among other things, bursts of lighting. The lamp (12) is installed in a fixture together with a power supply (20) and a control system (50) is provided for controlling when the lamp (12) is turned on and off. Preferably, the control system (50) includes manually operated switches (53, 57, 54) and preferably one or more controllers (50) can be coupled together in a series fashion, should it be desired to control the lamp (12) for a greater number of time cycles then permitted by a single controller (50). Alternative power supplies (20) are disclosed. One power supply (20) permits the intensity of the flashes of light (12) to be controlled.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: October 31, 2000
    Assignee: David A. Pringle
    Inventors: David A. Pringle, David McDonald, Zhong Fang Yan, George Johnson
  • Patent number: 5982112
    Abstract: Disclosed is a low pressure xenon lamp (12) and the driver circuitry therefor for producing relatively short bursts of intense light from the lamp (12). The lamp (12), including its associated driver circuitry (50) can be used in theatrical, stage, movie and/or video production to simulate, among other things, bursts of lighting. The lamp (12) is installed in a fixture together with a power supply (20) and a control system (50) is provided for controlling when the lamp (12) is turned on and off. Preferably, the control system (50) includes manually operated switches (53, 57, 54) and preferably one or more controllers (50) can be coupled together in a series fashion, should it be desired to control the lamp (12) for a greater number of time cycles then permitted by a single controller (50). Alternative power supplies (20) are disclosed. One power supply (20) permits the intensity of the flashes of light (12) to be controlled.
    Type: Grant
    Filed: March 22, 1994
    Date of Patent: November 9, 1999
    Assignee: David A. Pringle
    Inventors: David A. Pringle, David McDonald, Zhong Fang Yan, George Johnson
  • Patent number: 5737610
    Abstract: A system and method for storing data and program code on an external card has been provided. Information is stored on the external card by first transferring data from a source database to a first computer (a server). The data is then transferred from the first computer to at least one additional computer (a loader). The additional computer is then utilized to i) load data on the external card, and to ii) load program code on the external card. Further, an external reader is provided for accepting the external card. The external reader includes circuitry therein which is controlled by the program code on the external card for accessing the data on the external card.
    Type: Grant
    Filed: October 12, 1995
    Date of Patent: April 7, 1998
    Assignee: Infopak Inc.
    Inventors: Bruce Darryl Sandig, John Edward Matlock, Roy David Pringle
  • Patent number: 5179399
    Abstract: A projection system for a theatre in the round having a plurality of moving image projectors. The projectors can be either film projectors or television-type projectors. They project in an essentially cylindrical surface which is viewed by people at a viewing location. A lens is associated with each moving image projector, the lens having an optical axis located at or above a top edge of the viewable portion of the cylindrical surface. A source of moving images is associated with each lens, the center of which source is located above the optical axis of the associated lens such that moving images are projected by each lens downwardly toward a portion of the essentially cylindrical surface in an essentially distortion-free manner.
    Type: Grant
    Filed: January 24, 1991
    Date of Patent: January 12, 1993
    Inventor: David A. Pringle
  • Patent number: 5150012
    Abstract: Disclosed is a low pressure xenon lamp and the driver circuitry therefore for producing relatively short bursts of intense light from the lamp. The lamp, including its associated driver circuitry, can be used in theatrical, stage, movie and/or video productions to simulate, among other things, bursts of lightning. The lamp is installed in a fixture together with a power supply and a control system is provided for controlling when the lamp is turned on and off. Preferably, the control system includes manually operated switches and preferably one or more controllers can be coupled together in a series fashion, should it be desired to control the lamp for a greater number of time cycles then permitted by a single controller.
    Type: Grant
    Filed: June 7, 1991
    Date of Patent: September 22, 1992
    Assignee: David A. Pringle
    Inventors: David A. Pringle, David McDonald, Zhong F. Yan
  • Patent number: 4750097
    Abstract: A reflecting mirror for reflecting a beam of light emitted from a light source along an optical axis, the mirror comprising at least two spherical sections. Each section is arranged to produce an image of the light source adjacent to but not coincident with the light source.
    Type: Grant
    Filed: November 25, 1986
    Date of Patent: June 7, 1988
    Assignee: Optech Inc.
    Inventors: David A. Pringle, Helen Gourley
  • Patent number: 4692607
    Abstract: A controlled color light source including a lamp for projecting a beam of light, a power supply for energizing the lamp and a light conduit for sampling a portion of the light emitted from the lamp. A beam splitter is arranged to split the light from the conduit into two channels, and a pair of photo detectors, one for each channel are arranged to receive the light from the conduit via the beam splitter. A divider circuit has a pair of inputs and an output, the inputs being connected to the two photo detectors and an output circuit is connected to the output of the divider circuit for providing an output signal which is proportional to the color of light captured by the conduit.
    Type: Grant
    Filed: October 25, 1985
    Date of Patent: September 8, 1987
    Assignee: Optech Inc.
    Inventors: John T. LaBelle, David A. Pringle, Daniel McKenna
  • Patent number: 4686612
    Abstract: A reflector assembly for projecting a beam of light along an optical axis, the assembly including an enclosure having an aperture for projecting the beam of light and a source of light mounted within the enclosure. A reflecting mirror is disposed within the enclosure and arranged to move axially with respect to the optical axis of the beam of light between positions adjacent the aperture and remote from the aperture. A plurality of reflector segments are disposed between the movable reflector and the aperture in the enclosure, the segments each being defined as a portion of a cone or cylinder and with gaps therebetween arranged so as to permit the passage of air between the segments.
    Type: Grant
    Filed: October 25, 1985
    Date of Patent: August 11, 1987
    Assignee: Optech Inc.
    Inventors: David A. Pringle, Helen Gourley
  • Patent number: D652556
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: January 17, 2012
    Inventors: David Pringle, Ashot Nalbandyan
  • Patent number: D725767
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: March 31, 2015
    Assignee: Broan-NuTone LLC
    Inventors: Kiyoshi Hoshino, Benjamin Puffer, David Pringle