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US4504191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heated ceiling fan
Assignee: Individual
•
Filing: 1982-10-29
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Granted: 1985-03-12
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Expires: 2002-10-29
Abstract
Abstract A heated ceiling fan comprising a plurality of blades with heating means in each of the blades.
Inventors
- 👤 David J. Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:41
CPC Classifications
F; F04; F04D; F04D25/00; F04D25/02; F04D25/08; F04D25/088
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
145 words
A ceiling fan, comprising: a plurality of blades, each of said blades defining a generally hollow interior portion, each of said blades having a lower surface, said lower surface having a rough coating of particles to enhance the emission of heat therefrom; means for rotating said plurality of blades about a vertical axis; means for attaching said means for rotating to a ceiling; resistance heating elements extending lengthwise through said hollow interior portion of said blades extending from near said axis to the opposite end of each of said blades and returning lengthwise opposite through said blade toward said axis, said hollow interior portion above said heating element being generally filled with an insulating material and the hollow interior portion below said heating elements being filled with a heat conducting material; and control means for independently controlling said heating means and said means for rotating.
Claim 2
Dependent Claim
145 words
A ceiling fan, comprising: a plurality of blades, each of said blades defining a generally hollow interior portion, each of said blades having a lower surface, said lower surface having a rough coating of particles to enhance the emission of heat therefrom; means for rotating said plurality of blades about a vertical axis; means for attaching said means for rotating to a ceiling; resistance heating elements extending lengthwise through said hollow interior portion of said blades extending from near said axis to the opposite end of each of said blades and returning lengthwise opposite through said blade toward said axis, said hollow interior portion above said heating element being generally filled with an insulating material and the hollow interior portion below said heating elements being filled with a heat conducting material; and control means for independently controlling said heating means and said means for rotating.
Claim 3
Dependent Claim
24 words
The apparatus according to claim 1 further including thermostatically controlled electrical breakers associated with each of said heating means in each of said blades.
References Cited (Backward Citations)
US449404A
Cited
US684459A
Cited
US1479494A
Cited
US1807359A
Cited
US1737912A
Cited
US2110621A
Cited
US2119398A
Cited
US2619578A
Cited
US2695146A
Cited
US3020386A
Cited
GB1208928A
Cited
US3492148A
Cited
US3997758A
Cited
US4064427A
Cited
US4382400A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-03-11 | 1988-09-10 | 1989-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-11 | 1992-09-10 | 1993-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-11 | 1996-09-10 | 1997-03-12 | $7700.00 | Window Closed / Lapsed |