US4278911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Circular fluorescent lamp unit
Assignee: General Electric Co
•
Filing: 1979-06-13
•
Granted: 1981-07-14
•
Expires: 1999-06-13
Abstract
Abstract A circular fluorescent lamp unit having a central hub containing a ballast reactor and provided with a screw base. A replaceable circular lamp assembly is positioned around the hub and has a slide connector for electrically and mechanically connecting the lamp assembly to the hub.
Inventors
- 👤 Rudolph Metoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:01
CPC Classifications
F; F21; F21V; F21V23/00; F21V19/00; F21V19/0075; F21Y; F21Y2103/00; F21Y2103/30; F21Y2103/33
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
106 words
A circular lamp unit comprising a central hub and a detachable circular lamp assembly, said hub comprising means for connection to a source of electrical power and a socket at the side of the hub, and said circular lamp assembly comprising a circular light bulb, a sleeve ring adapted to fit around said hub, and a plurality of spokes extending outwardly from said sleeve ring and supporting said circular light bulb, one of said spokes being provided with an electrical slide connector arranged to slide alternatively toward said hub and make contact with said socket, and away from said hub and break contact with said socket.
Claim 2
Dependent Claim
106 words
A circular lamp unit comprising a central hub and a detachable circular lamp assembly, said hub comprising means for connection to a source of electrical power and a socket at the side of the hub, and said circular lamp assembly comprising a circular light bulb, a sleeve ring adapted to fit around said hub, and a plurality of spokes extending outwardly from said sleeve ring and supporting said circular light bulb, one of said spokes being provided with an electrical slide connector arranged to slide alternatively toward said hub and make contact with said socket, and away from said hub and break contact with said socket.
Claim 3
Dependent Claim
18 words
A lamp unit as claimed in claim 1, in which said one spoke contains said slide connector therewithin.
Claim 4
Dependent Claim
37 words
A lamp unit as claimed in claim 2, in which said slide connector is provided with a pair of finger grips extending from opposite sides thereof and through a pair of slots provided in said one spoke.
Claim 5
Dependent Claim
38 words
A lamp unit as claimed in claim 1, in which said socket extends from said hub and said sleeve ring is provided with a slot aligned with said one spoke and shaped to mate with said extending socket.
Claim 6
Dependent Claim
49 words
A lamp unit as claimed in claim 1, in which said circular light bulb has a pair of spaced-apart ends facing each other, said one spoke being provided with a connector housing at the outer end of therefore and which surrounds and conceals said ends of the light bulb.
Claim 7
Dependent Claim
40 words
A lamp unit as claimed in claim 5, in which said light bulb has terminals at said ends thereof, said unit including a plurality of flexible wires within said one spoke and connected between said terminals and said slide connector.
Claim 8
Dependent Claim
39 words
A lamp unit as claimed in claim 1, in which said slide connector includes a pair of metal connector prongs extending toward said socket, and in which said socket includes a pair of contacts for respectively receiving said prongs.
Claim 9
Dependent Claim
41 words
A lamp unit as claimed in claim 7, in which said slide connector includes a locking prong, between said connector prongs and extending toward said socket, and in which said socket is provided with an opening for receiving said locking prong.
Claim 10
Dependent Claim
75 words
A lamp unit as claimed in claim 7, in which said hub contains a ballast for operating said circular light bulb, a threaded screw based carried at an end of said hub and comprising a shell terminal and a button terminal, means electrically connecting said ballast between one of said base terminals and one of said socket contacts, and means electrically connecting the other of said base terminals to the other of said socket contacts.
Claim 11
Dependent Claim
60 words
A circular lamp assembly, comprising a circular light bulb, a sleeve ring, and a plurality of spokes extending outwardly from said sleeve ring and supporting said circular light bulb with respect to the sleeve ring, one of said spokes being provided with an electrical slide connector arranged to slide alternatively toward said sleeve ring and away from said sleeve ring.
Claim 12
Dependent Claim
60 words
A circular lamp assembly, comprising a circular light bulb, a sleeve ring, and a plurality of spokes extending outwardly from said sleeve ring and supporting said circular light bulb with respect to the sleeve ring, one of said spokes being provided with an electrical slide connector arranged to slide alternatively toward said sleeve ring and away from said sleeve ring.
Claim 13
Dependent Claim
19 words
A circular lamp assembly as claimed in claim 10, in which said one spoke contains said slide connector therein.
Claim 14
Dependent Claim
38 words
A circular lamp assembly as claimed in claim 11, in which said slide connector is provided with a pair of finger grips extending from opposite sides thereof and through a pair of slots provided in said one spoke.
Claim 15
Dependent Claim
49 words
A circular lamp assembly as claimed in claim 10, in which said circular light bulb has a pair of spaced-apart ends facing each other, said one spoke being provided with a connector housing at the outer end thereof and which surrounds and conceals said ends of the light bulb.
Claim 16
Dependent Claim
41 words
A circular lamp assembly as claimed in claim 13, in which said light bulb has terminals at said ends thereof, said assembly including a plurality of flexible wires within said one spoke and connected between said terminals and said slide connector.
Claim 17
Dependent Claim
26 words
A circular lamp assembly as claimed in claim 10, in which said slide connector includes a pair of metal connector prongs extending toward said sleeve ring.
Claim 18
Dependent Claim
28 words
A circular lamp assembly as claimed in claim 15, in which said slide connector includes a locking prong between said connector prongs and extending toward said sleeve ring.
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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) | 1984-07-13 | 1985-01-12 | 1985-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-13 | 1989-01-12 | 1989-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-13 | 1993-01-12 | 1993-07-14 | $7700.00 | Window Closed / Lapsed |