Patents by Inventor Kenneth B. Robinson

Kenneth B. Robinson 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).

  • Electric filament lamps
    Patent number: 4366411
    Abstract: A quartz iodine studio lamp has a tungsten filament (32) formed of several sections (34) arranged in a plane between two quartz bridges (16,18) which are in turn supported by support wires (20,22). One end of the filament assembly (14) is supported in a seal (28) forming one end of the envelope (12). To stabilize the filament assembly, so as to stop it hitting the envelope wall, two spring coils (40) are carried by the bridge (16) remote from the seal (28) and extend transversely of the envelope to its inner surface.
    Type: Grant
    Filed: June 3, 1980
    Date of Patent: December 28, 1982
    Assignee: Thorn Electrical Industries Limited
    Inventor: Kenneth B. Robinson