Electric lamp and discharge devices – With gas or vapor – Incandescent filament lamp
Reexamination Certificate
2001-08-13
2003-05-06
Patel, Nimeshkumar D. (Department: 2879)
Electric lamp and discharge devices
With gas or vapor
Incandescent filament lamp
C313S579000, C313S315000, C313S569000
Reexamination Certificate
active
06559597
ABSTRACT:
STATEMENT OF GOVERNMENT INTEREST
The invention described herein may be manufactured and used by or for the Government for governmental purposes without the payment of any royalty thereon.
BACKGROUND OF THE INVENTION
The present invention relates generally to incandescent lighting systems and more specifically to a new design for a high efficiency liquid filament system with long life. Apart from the selection of filament materials, the design of the incandescent light has not evolved much since its initial development by Thomas Edison as shown in U.S. Pat. No. 223,898 issued Jan. 27, 1880.
SUMMARY OF THE INVENTION
The present invention includes a new design for an incandescent light that uses a rotating liquefied filament. The rotating filament consists of a thin layer of filament metal deposited on the interior surface of a filament mount. This mount is fitted within an evacuated quartz torus which is rotating about an axis within an evacuated glass envelope.
The filament device is designed to rotate at a speed sufficient to prevent the molten filament metal from boiling off from, or breaking away from, the surface of the filament mount as it rotates. The rotational speed of the torus will create a centrifugal force greater than the thermal forces, which would otherwise destroy the molecular integrity of the filament metal. To solve the possible problem of evaporation of the filament, this lamp could be built as currently manufactured halogen bulbs.
The temperature of the deposited filament metal will exceed its normal melting point as it rotates. As it becomes hotter it will luminesce more in exponential proportion to the current applied.
REFERENCES:
patent: 4499398 (1985-02-01), Munroe
patent: 4866340 (1989-09-01), Caems et al.
Auton William G.
Patel Nimeshkumar D.
Perry Anthony T.
The United States of America as represented by the Secretary of
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