Patents by Inventor David W. Lawrence

David W. Lawrence 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: 20030001519
    Abstract: An integrated high brightness electrodeless lamp includes a lamp base defining two or more compartments housing components of the lamp, wherein at least one compartment provides an opening in the lamp base, a cover fitted to the lamp base, and an optics assembly positioned in the opening in the lamp base, wherein the lamp base, the cover, and the optics assembly provide an RF sealed system. The lamp components include an RF source providing RF energy for the lamp, an aperture bulb assembly including an electrodeless envelope containing a discharge forming fill which emits light when excited by RF energy, and an excitation structure for coupling RF energy from the RF source to the discharge forming fill. The optics assembly may be mounted in the opening in the lamp base with a twist lock mounting structure.
    Type: Application
    Filed: May 29, 2002
    Publication date: January 2, 2003
    Inventors: Douglas A. Kirkpatrick, Gary K. Bass, Jesse F. Copsey, Aleksandr Gitsevich, David Helsel, David W. Lawrence, Edward P. Rhyne, Stephen J. Sweeney, Peter Tsai
  • Patent number: 6237831
    Abstract: A disposable solder receiving capsule for a hand held vacuum solder extracting desoldering tool is formed of an outer tube which is closed at one end by a porous filter and has an opening at its opposite end, and a hollow solder collection chamber part, having a tubular member with an open end and which is closed with respect to the passage of solder therethrough at an opposite end, forming a solder receiving space within it. The solder collection chamber part is concentrically positioned within the outer tube with an air plenum disposed between the closed end of the chamber part and the filter and with at least one air channel extending the length of solder collection part for providing a path for gases entering the open end of the outer tube to the plenum and the filter that is separated from the solder receiving space. For facilitating solder reclamation, the capsule can be formed entirely of materials which are shape-sustaining when exposed to a temperature of 400° F.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: May 29, 2001
    Assignee: Pace, Incorporated
    Inventors: David W. Lawrence, Dung T. Le, William Jordan Siegel, David Lee Gilbert
  • Patent number: 6186387
    Abstract: A disposable solder receiving capsule for a hand held vacuum solder extracting desoldering tool is formed of an outer tube which is closed at one end by a porous filter and is open at its opposite end, and a hollow solder collection chamber part having a tubular member with an open end and a closed end forming a solder receiving space within it. The solder collection chamber part is concentrically positioned within the outer tube with an air plenum disposed between the closed end of the chamber part and the filter and with at least one air channel extending the length of solder collection part for providing a path for gases entering the open end of the outer tube to the plenum and the filter that is separated from said solder receiving space. For facilitating solder reclamation, the capsule can be formed entirely of materials which are shape-sustaining when exposed to a temperature of 400° F.
    Type: Grant
    Filed: April 12, 1999
    Date of Patent: February 13, 2001
    Assignee: Pace Incorporated
    Inventors: David W. Lawrence, Dung T. Le