Patent US4621977A successfully refreshed from Google Patents.
US4621977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceiling fan
Assignee: ENCON ELECTRIC LP
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Filing: 1985-10-28
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Granted: 1986-11-11
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Expires: 2005-10-28
Abstract
Abstract A spinner-type electrical ceiling fan having a three part housing which includes a top plate, a central annular band and a bottom plate. The top and bottom plates are secured to, and movable with, the central annular band, and a plurality of blades are secured to, and project horizontally outwardly from, the bottom plate.
Inventors
- 👤 Michael A. Markwardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:14
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/14; F; F04; F04D; F04D25/00; F04D25/02; F04D25/08; F04D25/088; H02K5/00; H02K5/04; H02K5/16; H02K5/173; H02K5/1737
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
155 words
A ceiling fan comprising: a canopy positionable adjacent a ceiling surface; a down rod projecting downwardly from said canopy; a housing top plate defining an opening in the center thereof; a first bearing disposed in said opening in said top plate and rotatably mounting said top plate to said down rod; an iron armature detachably secured to said top plate; a housing bottom plate defining an opening therein and detachably secured to said iron armature; a second bearing disposed in said opening in said bottom plate and rotatably mounting said bottom plate to said down rod; an annular housing side band disposed between said top plate and said bottom plate and radially outwardly of said iron armature; and a stator plate assembly secured to said down rod at a location between said top plate and said bottom plate, said stator plate assembly including copper wire windings disposed opposite and in alignment with said iron armature.
Claim 2
Dependent Claim
155 words
A ceiling fan comprising: a canopy positionable adjacent a ceiling surface; a down rod projecting downwardly from said canopy; a housing top plate defining an opening in the center thereof; a first bearing disposed in said opening in said top plate and rotatably mounting said top plate to said down rod; an iron armature detachably secured to said top plate; a housing bottom plate defining an opening therein and detachably secured to said iron armature; a second bearing disposed in said opening in said bottom plate and rotatably mounting said bottom plate to said down rod; an annular housing side band disposed between said top plate and said bottom plate and radially outwardly of said iron armature; and a stator plate assembly secured to said down rod at a location between said top plate and said bottom plate, said stator plate assembly including copper wire windings disposed opposite and in alignment with said iron armature.
Claim 3
Dependent Claim
22 words
The ceiling fan of claim 1 further comprising means for detachably mounting a plurality of fan blades to said housing bottom plate.
Claim 4
Dependent Claim
25 words
The ceiling fan of claim 1 wherein said down rod has an enlarged diameter central portion disposed between said first bearing and said second bearing.
Claim 5
Dependent Claim
23 words
The ceiling fan of claim 1 further comprising a switch housing attached to said down rod and disposed below said housing bottom plate.
Claim 6
Dependent Claim
21 words
The ceiling fan of claim 1 wherein at least one of said first and second bearings is adjustable upwardly and downwardly.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-10 | 1990-05-12 | 1990-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-10 | 1994-05-12 | 1994-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-10 | 1998-05-12 | 1998-11-11 | $7700.00 | Window Closed / Lapsed |