US4001803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting devices
Assignee: Individual
•
Filing: 1975-10-01
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Granted: 1977-01-04
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Expires: 1995-10-01
Abstract
Abstract An emergency power failure indicator circuit and night light adapted for use as a portable flashlight having wall outlet insertion prongs which are extendable from the body of the unit with concurrent actuation of a brush-type switch paralleling an on-off switch in the circuitry of the emergency light in the indicator circuit, thereby rendering the unit more suitable to be carried about as a flashlight as well as ensuring operability of the emergency light under power failure conditions.
Inventors
- 👤 Dominick A. Lombardo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:29
CPC Classifications
F; F21; F21S; F21S9/00; F21S9/02; F21S9/022; F21L; F21L4/00; F21L4/02; F21L4/022; F21L4/08; F21L4/085; F21S8/00; F21S8/03; F21S8/033; F21S8/035
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
202 words
A lighting unit comprising a protective housing in which are positioned a main circuit terminating in a pair of connector prongs for insertion into corresponding conductive receptacles of an electrical power source, said prongs being selectively extendable from said unit parallel to each other by having one of their respective ends swung outward therefrom, a first lighting circuit which is electrically connected to said main circuit and to a first lamp and includes a manually operable on-off switch positioned between said lamp and said main circuit, a second lighting circuit which is isolated electrically from said main circuit and said first circuit and electrically interconnects a battery with a second lamp through a normally closed switch and through two switches which are in series with said normally closed switch and are in parallel with each other, one of which parallel switches is a manually operable on-off switch and the other of which switches is an on-off switch which is mechanically integrated with said prongs and closes simultaneously with said prongs being swung outward from said unit, and a relay which is connected to said main circuit and causes said normally closed switch to open in response to energization of said main circuit.
Claim 2
Dependent Claim
202 words
A lighting unit comprising a protective housing in which are positioned a main circuit terminating in a pair of connector prongs for insertion into corresponding conductive receptacles of an electrical power source, said prongs being selectively extendable from said unit parallel to each other by having one of their respective ends swung outward therefrom, a first lighting circuit which is electrically connected to said main circuit and to a first lamp and includes a manually operable on-off switch positioned between said lamp and said main circuit, a second lighting circuit which is isolated electrically from said main circuit and said first circuit and electrically interconnects a battery with a second lamp through a normally closed switch and through two switches which are in series with said normally closed switch and are in parallel with each other, one of which parallel switches is a manually operable on-off switch and the other of which switches is an on-off switch which is mechanically integrated with said prongs and closes simultaneously with said prongs being swung outward from said unit, and a relay which is connected to said main circuit and causes said normally closed switch to open in response to energization of said main circuit.
Claim 3
Dependent Claim
24 words
The device described in claim 1 wherein said battery is rechargeable, and including means electrically connected to said main circuit for re-charging said battery.
Claim 4
Dependent Claim
34 words
The device described in claim 2 including auditory signal means electrically connected in series with a manual on-off switch to said second circuit at a point between said second lamp and said other switch.
Claim 5
Dependent Claim
34 words
The device described in claim 1 including auditory signal means electrically connected in series with a manual on-off switch to said second circuit at a point between said second lamp and said other switch.
Claim 6
Dependent Claim
167 words
A lighting unit comprising a main circuit terminating in connector means for removeably electrically interconnecting said circuit to an electrical power source, said means being selectively extendable outward from said unit, a first circuit which is electrically connected to said main circuit and to a first electricity responsive indicator means and includes a manually operable switch means for selectively interrupting the continuity of the circuit therebetween, a second circuit which is independent electrically from said main circuit and said first circuit, for effecting electrical interconnection between an electrical power source other than said main circuit and a second electrically responsive indicator means through a normally closed switch and through switch means connected between said normally closed switch and said second indicator means, which switch means comprises an on-off connector switch which moves into the closed position simultaneously with said connector means being extended outward from said unit, and interrupter means for causing said normally closed switch to open in response to electrical energization of said main circuit.
Claim 7
Dependent Claim
167 words
A lighting unit comprising a main circuit terminating in connector means for removeably electrically interconnecting said circuit to an electrical power source, said means being selectively extendable outward from said unit, a first circuit which is electrically connected to said main circuit and to a first electricity responsive indicator means and includes a manually operable switch means for selectively interrupting the continuity of the circuit therebetween, a second circuit which is independent electrically from said main circuit and said first circuit, for effecting electrical interconnection between an electrical power source other than said main circuit and a second electrically responsive indicator means through a normally closed switch and through switch means connected between said normally closed switch and said second indicator means, which switch means comprises an on-off connector switch which moves into the closed position simultaneously with said connector means being extended outward from said unit, and interrupter means for causing said normally closed switch to open in response to electrical energization of said main circuit.
Claim 8
Dependent Claim
13 words
The device described in claim 5 wherein said interrupter means is a relay.
Claim 9
Dependent Claim
22 words
The device described in claim 6 wherein said switch means includes an on-off switch electrically connected in parallel with said connector switch.
Claim 10
Dependent Claim
18 words
The device described in claim 3 wherein said first and said second electricity responsive indicator means are lamps.
Claim 11
Dependent Claim
22 words
The device described in claim 8 wherein said switch means includes an on-off switch electrically connected in parallel with said connector switch.
Claim 12
Dependent Claim
18 words
The device described in claim 8 wherein said power source connected to said second circuit is a battery.
Claim 13
Dependent Claim
22 words
The device described in claim 10 wherein said switch means includes an on-off switch electrically connected in parallel with said connector switch.
Claim 14
Dependent Claim
25 words
The device described in claim 10 wherein said connector means is a pair of male wall receptacle prongs which are concurrently extendable from said unit.
Claim 15
Dependent Claim
22 words
The device described in claim 12 wherein said switch means includes an on-off switch electrically connected in parallel with said connector switch.
Claim 16
Dependent Claim
38 words
The device described in claim 12 wherein said connector switch is integral with a moveable member on which is mounted those ends of said prongs which face toward the interior of said device when said prongs are extended.
Claim 17
Dependent Claim
22 words
The device described in claim 14 wherein said switch means includes an on-off switch electrically connected in parallel with said connector switch.
Claim 18
Dependent Claim
38 words
The device described in claim 14 wherein said moveable member is a rotatable shaft, and wherein extension of said prongs and simultaneous movement of said connector switch into the closed position is effected by rotation of said shaft.
Claim 19
Dependent Claim
22 words
The device described in claim 16 wherein said switch means includes an on-off switch electrically connected in parallel with said connector switch.
Claim 20
Dependent Claim
24 words
The device described in claim 17 wherein said battery is rechargeable, and including means electrically connected to said main circuit for re-charging said battery.
Claim 21
Dependent Claim
34 words
The device described in claim 18 including auditory signal means electrically connected in series with a manual on-off switch to said second circuit at a point between said second indicator and said switch means.
Claim 22
Dependent Claim
34 words
The device described in claim 17 including auditory signal means electrically connected in series with a manual on-off switch to said second circuit at a point between said second indicator and said switch means.
Claim 23
Dependent Claim
22 words
The device described in claim 5 wherein said switch means includes an on-off switch electrically connected in parallel with said connector switch.
Claim 24
Dependent Claim
24 words
The device described in claim 21 wherein said battery is rechargeable, and including means electrically connected to said main circuit for re-charging said battery.
Claim 25
Dependent Claim
34 words
The device described in claim 22 including auditory signal means electrically connected in series with a manual on-off switch to said second circuit at a point between said second indicator and said switch means.
Claim 26
Dependent Claim
34 words
The device described in claim 5 including auditory signal means electrically connected in series with a manual on-off switch to said second circuit at a point between said second indicator and said switch means.
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) | 1980-01-04 | 1980-07-05 | 1981-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-04 | 1984-07-05 | 1985-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-04 | 1988-07-05 | 1989-01-04 | $7700.00 | Window Closed / Lapsed |