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US 4,539,630 AGranted
Brightness and color regulatable lampshade
OwnerShan W. Shewinventor
Life of this patent
Estimating the term…
Abstract
A decorative lampshade comprising translucent sealed walls, in which a translucent body surrounded by a liquid is located. The height of the body and the distance between the body and walls can be adjusted by bolts extending outside the lampshade. Adjustment of the bolts regulates the brightness and color of the lampshade.
Claims1
A decorative lampshade for use with and surrounding a light source comprising:
- an annular translucent outer wall having an upper end and a lower end,
- an annular translucent inner wall having an upper end and a lower end, said upper end of said outer wall integrally sealed to said upper end of said inner wall,
- a toroidal lower wall having an inner edge and outer edge, said outer wall lower end sealed to said lower wall outer edge and said inner wall lower end sealed to said lower wall inner edge,
- an annular translucent body within said walls,
- a colored liquid within said walls surrounding said body,
- a regulating bolt having a higher end and a lower end, said higher end rotatably secured within said body, said bolt extending through said lower wall,
- an under-frame having an annular hole frictionally receiving one side of said bolt lower end,
- whereby rotation of said under-frame with respect to said walls rotates said bolt which adjusts the height of said body within said walls regulating the amount of liquid between the walls and the brightness and color of said light source.
5 more elements
Dependencies are inferred from the claim text.