Patents by Inventor Kevin D. Provagna

Kevin D. Provagna 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).

  • HID lamp having arc tube mounting frame which relieves thermal stress
    Patent number: 6326721
    Abstract: An HID lamp utilizes a wire frame member having an integral coil with spaces between windings to relieve thermal stress and provide shock absorption in a ceramic metal halide discharge lamp mounted concentrically in an elliptical-dimple (ED-type) glass envelope. The wire frame member has a first end welded to a current carrying support member embedded in the stem and a second end welded to an upper axial lead of the arc tube, the coil being situated about the dimple. The lower axial lead fixed relative to a second current carrying support member embedded in the stem, so that the coil compresses when the arc tube expands relative to the wire frame member.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: December 4, 2001
    Assignee: Philips Electronics North America Corp.
    Inventors: Daniel P. Shippee, Gregory J. Nelson, Franciscus H. van Lierop, Kevin D. Provagna, James M. Gensert
  • Metal halide lamp with ARC tube secured to frame by clips passing through protective sleeve
    Patent number: 6291933
    Abstract: Metal halide lamp includes an arc tube and a surrounding tubular quartz sleeve between a pair of parallel wire frame members mounted to a glass stem containing current supply leads. The sleeve is provided with two pairs of diametrically opposed apertures, each pair of apertures receiving an elongate wire U-clip which engages a pinched end of the arc tube inside the sleeve and the frame members outside the sleeve. Distal ends of each U-clip are welded to a frame member to fix the position of the arc tube and the sleeve.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: September 18, 2001
    Assignees: Philips Electronics North America Corporation, Supro Spring and Wireforms, Inc.
    Inventors: Kevin S. Dombrowski, Kevin D. Provagna, Richard Intihar, Jr., James M. Gensert
  • Metal halide lamp with stem mounted support frame for arc tube shield
    Patent number: 6153968
    Abstract: A protective sleeve of quartz surrounding a metal halide arc tube is fixed to upright portions of a frame by means of retaining rings. The frame has lower ends formed with coils fitted over the glass stem in an interference fit, thereby insulating the frame from the electrical leads sealed in the stem. An intermediate portion of the frame fits closely in the opposite end of the lamp to stabilize the burner assembly and shield.
    Type: Grant
    Filed: October 2, 1998
    Date of Patent: November 28, 2000
    Assignee: Philips Electronics North America Corp.
    Inventors: Kevin S. Dombrowski, Kevin D. Provagna, James M. Gensert
  • Discharge lamp with wire frame having dual cantilever resilient end
    Patent number: 6133677
    Abstract: Discharge lamp utilizes a current carrying frame member which supports an arc tube and positions it centrally in a glass envelope having a closed end with an inside surface. The frame member has a first end fixed to a lead in the stem and a second end formed with first and second cantilevers connected by a 180 degree bend to resiliently position the frame member in the closed end of the envelope. A metal halide discharge lamp having an elliptical glass envelope and a cylindrical end utilizes a frame wherein the cantilevers are displaced apart to load a hooked end formed on the second cantilever against the inside surface.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: October 17, 2000
    Assignees: Philips Electronics North America Corp., Supro Spring and Wire Forms Inc.
    Inventors: Daniel P. Shippee, Kevin D. Provagna, James M. Gensert, Faye E. Bentley