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US 9,490,097 B2Granted
Liquid filament for incandescent lights
AssigneeElwha LLC
InventorsRoderick A. Hyde, Jordin T. Kare, David B. Tuckerman, Thomas A. Weaver, Lowell L. Wood, Jr., Richard N. Zare
Life of this patent
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Abstract
A filament for a light bulb includes a tube and a filament material within the tube, wherein the filament material is configured to be in a liquid state while the light bulb is in use.
Claims35
A light bulb, comprising:
- a tube, the tube having an inner diameter and an outer diameter defining a thickness of a tube wall, and wherein at least one of the inner diameter, the outer diameter, or the thickness varies along a length of the tube;
- and
- a filament material within the tube, the filament material configured to be in a liquid state when the light bulb is in use.
A filament for a light bulb, comprising:
- a tube including a cap at each end of the tube;
- and
- a filament material within the tube,
- wherein the filament material is configured to be in a liquid state when the light bulb is in use.
1 more element
An incandescent light, comprising:
- a tube;
- a filament material within the tube;
- a supply wire configured to provide energy to the filament material;
- a base configured to be in electrical communication with a socket;
- and
- a bulb coupled to the base and configured to enclose the tube and supply wire,
- wherein the filament material is configured to be in a liquid state when the incandescent light is in use, and wherein the bulb is configured to contain a gas such that the gas is in contact with the tube.
4 more elements
Dependencies are inferred from the claim text.