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US3585379A Expired / Lapsed US ⏱️ 0.0 years remaining

Lighting fixture

Assignee: Individual
•
Filing: 1968-09-06
•
Granted: 1971-06-15
•
Expires: 1988-09-06
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Abstract

Abstract A lighting fixture for producing a flamelike flickering light. A bulb in a light socket is surrounded by an opaque hollow tube for causing air to flow upwardly over the light bulb. A bladed rotor is rotatably mounted on the hollow tube above the light bulb, and an external tube of semitransparent material surrounds the upper end of the hollow tube and extends substantially vertically upwardly therefrom. The sides of the external tube are bent zigzag along vertical folds.

Inventors

  • 👤 Bunitu Yamamoto
  • 👤 Yoshikei Murakami

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 05:44
CPC Classifications
F; F21; F21V; F21V1/00; F21V1/10; F21S; F21S10/00; F21S10/04; Y; Y10; Y10S; Y10S362/00; Y10S362/806

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 185 words
A lighting fixture comprising a light socket, a frame on which said light socket is mounted, said frame having an aperture in the bottom thereof and having means for at least partially closing the aperture, a light bulb in said socket, a hollow unperforated opaque tube mounted on said frame and positioned around and spaced from said light bulb and extending to a position just above said light bulb, a bladed rotor rotatably mounted on said hollow tube above said light bulb and rotatable by the heated air rising through said tube around said light bulb, said rotor being positioned adjacent the top end of said hollow tube for interrupting the light radiating from said bulb, and an external tube of semitransparent material mounted on said frame having the lower end around and just below the upper end of said hollow tube, said external tube having substantially vertically extending sides which are bent zigzag along folds extendIng vertically along the tube, whereby the light radiating from the light bulb through the rotor produces a flamelike flickering light which appears to ascend along the external tube.
Claim 2
Dependent Claim 185 words
A lighting fixture comprising a light socket, a frame on which said light socket is mounted, said frame having an aperture in the bottom thereof and having means for at least partially closing the aperture, a light bulb in said socket, a hollow unperforated opaque tube mounted on said frame and positioned around and spaced from said light bulb and extending to a position just above said light bulb, a bladed rotor rotatably mounted on said hollow tube above said light bulb and rotatable by the heated air rising through said tube around said light bulb, said rotor being positioned adjacent the top end of said hollow tube for interrupting the light radiating from said bulb, and an external tube of semitransparent material mounted on said frame having the lower end around and just below the upper end of said hollow tube, said external tube having substantially vertically extending sides which are bent zigzag along folds extendIng vertically along the tube, whereby the light radiating from the light bulb through the rotor produces a flamelike flickering light which appears to ascend along the external tube.
Claim 3
Dependent Claim 21 words
A lighting fixture as claimed in claim 1 in which said light bulb has a plurality of opaque helical stripes thereon.
Claim 4
Dependent Claim 30 words
A lighting fixture as claimed in claim 1 further comprising a cover for said bulb which is at least partially transparent and having a plurality of opaque helical stripes thereon.

References Cited (Backward Citations)

US1559327A Cited
US1600966A Cited
US1671071A Cited
US1721540A Cited
US1865758A Cited
US1843279A Cited
US1878750A Cited
US2293185A Cited
US2408594A Cited
US2600664A Cited
US3393310A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-06-14 1974-12-14 1975-06-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-06-14 1978-12-14 1979-06-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-06-14 1982-12-14 1983-06-15 $7700.00 Window Closed / Lapsed

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