Patent US3761862A successfully refreshed from Google Patents.
US3761862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual voltage drop light
Assignee: Individual
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Filing: 1971-05-17
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Granted: 1973-09-25
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Expires: 1991-05-17
Abstract
Abstract A trouble light for use on two different voltages. The light has an incandescent lamp having two filaments. One of the filaments is connected to terminals so that it can be connected to a first source of voltage, such as 120 volts A.C. The second filament is connected to two terminals so that it can be connected to a second source of voltage, such as, for example, 12 volts. A cord is connected to the terminals. The cord terminates in a first plug. The first plug has pins for plugging into a socket. The adapter has a second female plug adapted to be received in a power supply. Clip leads are connected to the wires in the first plug for connecting to a battery. The construction of the lamp disclosed herein is such that it will prevent an electrical shock to the user since the exposed plugs and terminals are not connected to the power source.
Inventors
- 👤 J Spiteri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:22
CPC Classifications
H; H01; H01R; H01R29/00; F; F21; F21L; F21L14/00; F21V; F21V23/00; F21V33/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
225 words
In combination, an electrical device having a first electrical element adapted to operate on a first voltage and a second electrical element adapted to operate on a second voltage, a first plug member and a second plug member, said first electrical element having a first end and a second end, said second electrical element having a first end and a second end, a first male terminal on said first plug member connected to said first end of said first electrical element, a second male terminal on said first plug member connected to said second end of said first electrical element, a third female terminal on said first plug member connected to said second end of said second electrical element, said second male terminal on said first plug member being connected to said first end of said second electrical element, a first female terminal on said second plug member receiving said first male terminal on said first plug member, a second female terminal on said second plug member receiving said second male terminal on said first plug member, a third male terminal on said second plug member received in said third female terminal on said plug member, and means for connecting said second female terminal on said second plug member and said third male terminal in said second plug member to a second electrical voltage source.
Claim 2
Dependent Claim
225 words
In combination, an electrical device having a first electrical element adapted to operate on a first voltage and a second electrical element adapted to operate on a second voltage, a first plug member and a second plug member, said first electrical element having a first end and a second end, said second electrical element having a first end and a second end, a first male terminal on said first plug member connected to said first end of said first electrical element, a second male terminal on said first plug member connected to said second end of said first electrical element, a third female terminal on said first plug member connected to said second end of said second electrical element, said second male terminal on said first plug member being connected to said first end of said second electrical element, a first female terminal on said second plug member receiving said first male terminal on said first plug member, a second female terminal on said second plug member receiving said second male terminal on said first plug member, a third male terminal on said second plug member received in said third female terminal on said plug member, and means for connecting said second female terminal on said second plug member and said third male terminal in said second plug member to a second electrical voltage source.
Claim 3
Dependent Claim
38 words
The plug recited in claim 1 wherein said third line is connected to an external wire having a plug thereon and a plug adapted to be connected to said external wire and connected to one of said clips.
Claim 4
Dependent Claim
57 words
The lamp recited in claim 1 wherein a second female plug is provided and said second female plug is connected to said first line and said third line, said first female plug has pins thereon adapted to be received in said second female plug whereby said clips are connected to said first line and said third line.
Claim 5
Dependent Claim
37 words
The combination recited in claim 1 wherein said electrical device comprises a lamp, said first electrical element comprises a first lamp filament in said lamp, said second electrical element comprises a second electrical filament in said lamp,
Claim 6
Dependent Claim
32 words
The combination recited in claim 1 wherein said adapter members comprise elongated wires connected to said female terminals on said second plug member, and clips on the end of said adapter wires.
Claim 7
Dependent Claim
34 words
The combination recited in claim 4 wherein said third female terminal on said first plug member is supported thereon by means of a jumper wire, said jumper wire is connected to said female terminal.
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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |