Patents Assigned to Saunders-Roe Developments Limited
  • Light emitting devices
    Patent number: 4947475
    Abstract: A light emitting device in which annular self luminous light sources are supported intermediate the ends of a resilient rod. In an illustrated embodiment a plurality of the rods are located concentrically within a transparent tube between end caps which close the ends of the tube.
    Type: Grant
    Filed: February 24, 1989
    Date of Patent: August 7, 1990
    Assignee: Saunders-Roe Development Limited
    Inventor: Alfred N. Bright
  • Lighting devices
    Patent number: 4931910
    Abstract: A lighting device comprises a cylindrical light carrier having a plurality of tubular self luminous light sources attached longitudinally along a surface and throughout a major arc of its circumference. In one embodiment the lighting device includes a parabolic reflector.
    Type: Grant
    Filed: February 24, 1989
    Date of Patent: June 5, 1990
    Assignee: Saunders-Roe Developments Limited
    Inventor: Kenneth F. Wills
  • Self luminous characters and signs incorporating same
    Patent number: 4928414
    Abstract: A self luminous character comprises a transparent light carrier having a plan shape defining the desired shape of the character and includes a longitudinally extending recess housing one or more self luminous light sources. Light from the or each light source diffuses through the transparent light carrier and is reflected by reflector means to be emitted through a front surface of the carrier and illuminate the plan shape of the character.
    Type: Grant
    Filed: November 4, 1988
    Date of Patent: May 29, 1990
    Assignee: Saunders-Roe Development Limited
    Inventor: Alfred N. Bright
  • Transparent instrument cover and instrument incorporating same
    Patent number: 4181925
    Abstract: A transparent instrument cover provided with an electroluminescent area arranged so that when energized, light is projected from one surface of the cover to illuminate a dial of an instrument on which it is fitted. The cover is intended as a replacement for an existing transparent cover or coverglass in an instrument. In a first embodiment the electroluminescent area is an annular area located adjacent the periphery of the cover, and in a second embodiment an isolated electroluminescent area is located within the annular area.
    Type: Grant
    Filed: July 18, 1977
    Date of Patent: January 1, 1980
    Assignee: Saunders-Roe Developments Limited
    Inventors: Kenneth Burrows, Robert Hiscutt