Patents by Inventor Dale E. Brabham

Dale E. Brabham 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: 20120319011
    Abstract: A low-pressure mercury or amalgam lamp with praseodymium (Pr) doped particles of lanthanum phosphate converts 185 nm radiation to UV-C (186 nm-280 nm). For water purification, a plurality of low-pressure mercury or amalgam lamps with phosphor that convert 185 nm radiation to UV-C (186 nm-280 nm) may be used. A method for photolysis of nitroso dimethyl amine (NDMA) may include passing electrical current through a low pressure mercury or amalgam lamp, radiating 254 nm radiation through the lamp envelope into water containing the NDMA, converting 185 nm radiation within the lamp into 230 nm-240 nm radiation within the lamp via a phosphor within the lamp, and radiating the 230-240 nm radiation through the lamp envelope and into the water containing the NDMA, with the radiation from the lamp photolysizing the NDMA.
    Type: Application
    Filed: June 18, 2012
    Publication date: December 20, 2012
    Inventors: Dale E. Brabham, Holger Claus, Philip Snapp
  • Patent number: 6888312
    Abstract: An arc lamp assembly which includes in combination a reflector and a light source which is surrounded by said reflector. A dichroic coating on the reflector functions to reflect radiation in the range of about 300 to 600 nm. The light source is an arc lamp which contains a metal halide fill component which includes a mixture of scandium iodide, or other suitable lanthanide, indium iodide and cesium iodide, whereby the lamp assembly emits effective amounts of UV radiation to cure selected chemical compositions. The fill mixture, which contains no sodium component, contributes to improved lamp life and a reduction in passive lamp failure over halide fill mixtures which contain sodium iodide as a fill component.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: May 3, 2005
    Assignee: Welch Allyn, Inc.
    Inventor: Dale E. Brabham
  • Publication number: 20040113558
    Abstract: An arc lamp assembly which includes in combination a reflector and a light source which is surrounded by said reflector. A dichroic coating on the reflector functions to reflect radiation in the range of about 300 to 600 nm. The light source is an arc lamp which contains a metal halide fill component which includes a mixture of scandium iodide, or other suitable lanthanide, indium iodide and cesium iodide, whereby the lamp assembly emits effective amounts of UV radiation to cure selected chemical compositions. The fill mixture, which contains no sodium component, contributes to improved lamp life and a reduction in passive lamp failure over halide fill mixtures which contain sodium iodide as a fill component.
    Type: Application
    Filed: December 13, 2002
    Publication date: June 17, 2004
    Applicant: Welch Allyn, Inc.
    Inventor: Dale E. Brabham
  • Patent number: 6495844
    Abstract: An arc lamp assembly which includes in combination a reflector and a light source which is surrounded by said reflector. A dichroic coating on the reflector functions to reflect radiation in the range of about 300 to 600 nm. The light source is an arc lamp which contains a metal halide fill component which includes a mixture of scandium iodide, or other suitable lanthanide, indium iodide, sodium iodide and sodium iodide, whereby the lamp assembly emits effective amounts of WV radiation to cure selected chemical compositions.
    Type: Grant
    Filed: January 25, 2000
    Date of Patent: December 17, 2002
    Assignee: Welch Allyn, Inc.
    Inventors: Dale E. Brabham, Douglas M. Rutan, Timothy D. Russell
  • Patent number: 5288255
    Abstract: A high pressure discharge lamp having a translucent sintered aluminum oxide discharge envelope is produced by a method that includes providing a ceramic end plug having an aperture for a current lead-in member in an end of the envelope, sintering the end plug to the envelope and passing the current lead-in member through the plug so as to extend into the envelope, forming a thin disc-shaped sealing member formed of magnesium oxide containing glass frit and having an aperture for the lead-in member on the outer surface of the plug, positioning a thin barrier member having an aperture for the lead-in member on and extending over the outer surface of the sealing member and heating the assembly so as to cause the sealing member to melt and form a glass bond between the lead-in member and the plug and the barrier member to melt and bond to the glass seal.
    Type: Grant
    Filed: October 27, 1992
    Date of Patent: February 22, 1994
    Assignee: North American Philips Corporation
    Inventors: Dale E. Brabham, Geert van Bockstal
  • Patent number: 5198722
    Abstract: A high pressure discharge lamp having a translucent sintered aluminum oxide envelope, has a tubular current lead-in member, secured in a gas tight manner by an end-plug secured to the current lead-in member by a magnesium oxide containing glass seal and an aluminum oxide disk bonded to the outer surface of the end plug and extending over the glass seal.
    Type: Grant
    Filed: October 31, 1990
    Date of Patent: March 30, 1993
    Assignee: North American Philips Corporation
    Inventors: Dale E. Brabham, Geert Van Bockstal
  • Patent number: 5028845
    Abstract: A 1000 watt arc discharge arc tube assembly comprises two series connected side-by-side arc discharge tubes whose combined break down voltage in sufficient for a standard 2-5 kv starting pulse to simultaneously start both arc tubes without additional structure. A standard ballast, starter and fixture can be used with the arc tube assembly whose overall length is less than 300 millimeters. The lamps are spaced sufficiently apart to preclude detrimental heat transfer effects on one another and sufficiently close to act as a single source of light in standard fixtures normally employing lamps having a single discharge tube.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: July 2, 1991
    Assignee: North American Philips Corporation
    Inventors: Jagannathan Ravi, Kenneth E. Pearson, Jay J. Palmer, Ronald C. Marburger, John P. Dunn, Kent L. Collins, Dale E. Brabham, Kathleen P. Bernard, Herbert Bayne, John Alderman, Kris Aelterman
  • Patent number: RE42181
    Abstract: An arc lamp assembly which includes in combination a reflector and a light source which is surrounded by said reflector. A dichroic coating on the reflector functions to reflect radiation in the range of about 300 to 600 nm. The light source is an arc lamp which contains a metal halide fill component which includes a mixture of scandium iodide, or other suitable lanthanide, indium iodide and cesium iodide, whereby the lamp assembly emits effective amounts of UV radiation to cure selected chemical compositions. The fill mixture, which contains no sodium component, contributes to improved lamp life and a reduction in passive lamp failure over halide fill mixtures which contain sodium iodide as a fill component.
    Type: Grant
    Filed: May 3, 2007
    Date of Patent: March 1, 2011
    Assignee: Ushio America, Inc.
    Inventor: Dale E. Brabham