US3882450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamp
Assignee: JANSSEN TRUSTEE WEBSTER ELLIOT
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Filing: 1974-07-12
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Granted: 1975-05-06
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Expires: 1994-07-12
Abstract
Abstract The present invention relates to a lamp structure which is safer, more durable, more inexpensively manufactured and more easily repaired than lamp structures of the prior art. The lamp structure of the present invention has a shaft of insulating material extending upward from a base with bus bar conductors embedded in the surface of the shaft and running lengthwise of the shaft. A lighting socket and housing are affixed to the top of the shaft and snap contacts in the bottom portion of the socket housing make electrical connection with the bus bar conductors in the shaft. At the bottom of the shaft the bus bar conductors make contact with plug prongs which connect to a plug affixed to a standard electric cord.
Inventors
- 👤 Webster E Janssen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:53
CPC Classifications
F; F21; F21S; F21S6/00; F21S6/005
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
186 words
An improved lamp structure comprising: a. a base section; b. a shaft of insulating material located on said base section and extending upwardly from saiD base section; c. bus bar conductors embedded in a surface of said shaft, running lengthwise of said shaft, electrically connected to electricity carrying means which extend out of the lamp structure, and exposed sufficiently at the upper portion of said shaft so as to be able to make electrical contact with the snap conductive contacts of a light bulb socket; d. a light bulb socket contained within housing of insulating material, said housing being fit over the upper portion of said shaft; e. snap conductive contacts affixed to and extending below said socket and making electrical contact with said bus bar conductors and said shaft, said snap conductive contacts also making electrical contact with a spring contact in said socket adapted to transmit electric current to an electric bulb when said bulb is inserted into said socket so as to depress said spring contact; f. switching means for regulating current flow through said bus bar conductors to said light bulb socket.
Claim 2
Dependent Claim
186 words
An improved lamp structure comprising: a. a base section; b. a shaft of insulating material located on said base section and extending upwardly from saiD base section; c. bus bar conductors embedded in a surface of said shaft, running lengthwise of said shaft, electrically connected to electricity carrying means which extend out of the lamp structure, and exposed sufficiently at the upper portion of said shaft so as to be able to make electrical contact with the snap conductive contacts of a light bulb socket; d. a light bulb socket contained within housing of insulating material, said housing being fit over the upper portion of said shaft; e. snap conductive contacts affixed to and extending below said socket and making electrical contact with said bus bar conductors and said shaft, said snap conductive contacts also making electrical contact with a spring contact in said socket adapted to transmit electric current to an electric bulb when said bulb is inserted into said socket so as to depress said spring contact; f. switching means for regulating current flow through said bus bar conductors to said light bulb socket.
Claim 3
Dependent Claim
11 words
Apparatus as claimed in claim 1 wherein said shaft is plastic.
Claim 4
Dependent Claim
29 words
Apparatus as claimed in claim 1, wherein said shaft of insulating material is extruded and said bus bar conductors are embedded in the inner surface of said extruded shaft.
Claim 5
Dependent Claim
39 words
Apparatus as claimed in claim 3, wherein said light bulb socket and socket housing are readily detached from said shaft by manually pulling said housing from said shaft and are adapted to be manually force fit over said shaft.
Claim 6
Dependent Claim
13 words
Apparatus as claimed in claim 4, wherein there are two bus bar conductors.
Claim 7
Dependent Claim
83 words
Apparatus as claimed in claim 5 wherein said shaft is provided with grooves in the upper portion of its inner wall, each of which surrounds the upper portion of a bus bar conductor, and each of which is adapted to hold one said snap conductive contact in fixed position in contact with a bus bar conductor, when said socket housing is force fit over said shaft, so as to prevent said socket housing and said socket from twisting in relation to said shaft.
Claim 8
Dependent Claim
42 words
Apparatus as claimed in claim 6 wherein said bus bar conductors contact the upper portion of male plug prongs near the bottom of said shaft, the male plug being affixed to a standard electric cord which can extend to an electricity source.
Claim 9
Dependent Claim
33 words
Apparatus as claimed in claim 7, wherein the bus bar conductors are provided with nipples near the bottom of the shaft which are adapted to maintain electrical contact with said male plug prongs.
Claim 10
Dependent Claim
33 words
Apparatus as claimed in claim 7, wherein the bus bar conductors are provided with depressions near the botton of said shaft which are adapted to maintain electrical contact with said male plug prongs.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |