Patents Assigned to Safety Light Corporation
  • Self-luminous light source
    Patent number: 4546417
    Abstract: A self-luminous light source is disclosed having a light-permeable shell, a body disposed within the shell, defining a space between the shell and body, a member connecting the shell and body, radioactive gas disposed in the space, and a phosphor coating on at least one surface of the shell and body. The shell and body may be coaxial glass tubes defining an annular space of restricted width, connected to one another by annular end members.
    Type: Grant
    Filed: July 19, 1983
    Date of Patent: October 8, 1985
    Assignee: Safety Light Corporation
    Inventor: David J. Watts