Patents by Inventor Robert B. Mitchell

Robert B. Mitchell 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).

  • Bracket support means for a cathode ray tube
    Patent number: 4390809
    Abstract: The invention relates to a three-portion CRT mounting bracket of the type employed for supporting a banded tube in a display environment. An apertured mounting appendage is located spatially above a seating portion by means of an intermediate protruding portion. By this integral arrangement, the mounting appendage is oriented rearward of the front edge of the banding strap. This permits the strap to advantageously overlay the mold line of the panel, while the appendage is suitably positioned in a plane thereabove to fulfill the respective tube mounting requirements.
    Type: Grant
    Filed: November 17, 1980
    Date of Patent: June 28, 1983
    Assignee: North American Philips Consumer Electronics Corp.
    Inventors: Robert B. Mitchell, Harry R. Swank
  • Implosion-resistant cathode ray tube structure and fabrication process
    Patent number: 4222075
    Abstract: An implosion-resistant cathode ray tube has an evacuated envelope with a face panel having a substantially rectangular-shaped viewing portion extending to an upturned flanged portion with corners having a given radius of curvature and a metal band encircling and exerting a compressive force on the upturned flanged portion and an "L"-shaped bracket member with a base portion connected to an upstanding attachment portion has the base portion positioned intermediate the metal band and the corner of the envelope and is of a width to provide contact of the encircling metal band with the envelope corner on the given radius of curvature.
    Type: Grant
    Filed: September 12, 1978
    Date of Patent: September 9, 1980
    Assignee: GTE Products Corporation
    Inventors: Robert B. Mitchell, Harry R. Swank
  • L-shaped bracket assembly and rimband type implosion-resistant cathode ray tube
    Patent number: 4210935
    Abstract: An implosion-resistant cathode ray tube includes an envelope having a substantially rectangular-shaped viewing portion with corners having a given radius of curvature blending into a flattened portion, a pair of rimbands affixed to the viewing portion, a bracket member having a rounded base portion affixed to the rimband and of a width to permit a metal band member to encircle and compress the base portion and contact the rimband on the radius of curvature of the corner and prior to the flattened portion of the envelope.
    Type: Grant
    Filed: September 12, 1978
    Date of Patent: July 1, 1980
    Assignee: GTE Products Corporation
    Inventors: Robert B. Mitchell, Harry R. Swank
  • Integral lens cathode ray tube system
    Patent number: 4150320
    Abstract: An integral lens cathode ray tube system includes a cathode ray tube having an electron gun for providing a visual display on a substantially spherical-shaped viewing portion and a glass panel affixed to the viewing portion by a resin disposed therebetween and optically matched to the glass panel and viewing portion of the cathode ray tube.
    Type: Grant
    Filed: July 18, 1977
    Date of Patent: April 17, 1979
    Assignee: GTE Sylvania Incorporated
    Inventors: Robert B. Mitchell, John P. O'Donnell, Harry R. Swank