Patent US3634680A successfully refreshed from Google Patents.
US3634680A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plug-in flashlight extension
Assignee: TRUMAN L MYRAH
•
Filing: 1970-08-03
•
Granted: 1972-01-11
•
Expires: 1990-08-03
Abstract
Abstract A plug-in flashlight extension embodies an extension cord having a plug which is removably insertable in a jack carried by a flashlight assembly and connected in circuit with a switch carried by the flashlight casing and which may be the conventional digitally operable reciprocably slidable or button switch with which flashlights are equipped and which operate on the principle of connection to one pole of the battery or batteries through the flashlight casing where it is metal or through a conductor in or on the casing, and the opposite pole of the battery or batteries through a conductor insulated from the casing or the first-mentioned conductor. In one desirable arrangement, the jack is provided with means to disconnect the switch circuit from the conventional front-end light bulb socket. In another arrangement the jack is adapted to replace the frontend lamp bulb socket. A storage compartment is optionally provided for the extension cord when not in use. A probe light extension is optionally provided for the extension cord.
Inventors
- 👤 Truman L Myrah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:56
CPC Classifications
F; F21; F21V; F21V23/00; F21L; F21L2/00; F21L4/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
101 words
In a flashlight assembly including a tubular casing providing a battery chamber and having a digitally operable switch movable between open circuit and closed circuit positions to control a flashlight circuit between opposite poles of a battery in said chamber: a jack mounted on the casing and having separate electrical connEctions with the casing and the battery; and a lamp-carrying electrical extension having a plug with electrically separate poles separably engageable in said jack to bridge said electrical jack connections to enable controlling illumination of the extension lamp by operation of said switch between its open circuit and closed circuit positions.
Claim 2
Dependent Claim
101 words
In a flashlight assembly including a tubular casing providing a battery chamber and having a digitally operable switch movable between open circuit and closed circuit positions to control a flashlight circuit between opposite poles of a battery in said chamber: a jack mounted on the casing and having separate electrical connEctions with the casing and the battery; and a lamp-carrying electrical extension having a plug with electrically separate poles separably engageable in said jack to bridge said electrical jack connections to enable controlling illumination of the extension lamp by operation of said switch between its open circuit and closed circuit positions.
Claim 3
Dependent Claim
74 words
A flashlight assembly according to claim 1, said casing being electrically conductive and having an electrically conductive rear end closure thereon, said jack being mounted on said closure, one of the jack connections being with said closure and through the closure with said casing, an electrically conductive spring bottomed on said closure and thrusting into electrical engagement with the adjacent end of a battery, and the other of said connections being with said spring.
Claim 4
Dependent Claim
53 words
A flashlight assembly according to claim 2, one of said connections comprising a pair of normally closed contacts connecting said connections to close the flashlight circuit controlled by said switch to enable operation of the switch to illuminate a front-end lamp of the flashlight assembly, said plug being operable to open said contacts.
Claim 5
Dependent Claim
83 words
A flashlight assembly according to claim 1, including a lamp mounted on a front end of the casing and connected in said circuit, means normally acting through said separate electrical connections to enable controlling illumination of said front-end lamp by means of said switch, and means controlled by said plug when inserted in said jack to disable said means for connecting said electrical contacts so that only the lamp of the extension will be illuminated when the switch is in the closed position.
Claim 6
Dependent Claim
112 words
A flashlight assembly according to claim 1, said casing having means at one end for supporting a conventional lamp to be controlled by said switch and having said jack mounted at the opposite end of the casing with a spring normally thrusting the battery toward the front-end lamp, means on said jack normally completing a circuit through the control circuit so that operation of the switch will control said front-end lamp, said means being disabled by engagement of said plug within said jack, said electrical connections comprising separate terminals on said jack, and respective leads connecting one of said terminals to said spring and the other of said terminals to said switch.
Claim 7
Dependent Claim
79 words
A flashlight assembly according to claim 1, including an electrically conductive end closure on one end of said casing carrying said jack, an electrically conductive spring between said end closure and said battery, an insulator between said spring and said end closure, one of said electrical connections comprising a terminal in electrical contact with said spring between said spring and said insulator, and the other of said electrical connections comprising a terminal in electrical engagement with said end closure.
Claim 8
Dependent Claim
56 words
A flashlight assembly according to claim 1, in which said casing has a front-end lamp-supporting device, said jack being replaceably carried by said lamp-supporting device with one of said electrical connections being effected with a front pole of the battery, and the other of said electrical connections being effected through a conductor leading to said switch.
Claim 9
Dependent Claim
35 words
A flashlight assembly according to claim 1, one of said separate electrical connections being through a conductor leading to said switch, and the other of said electrical connections being with one pole of the battery.
Claim 10
Dependent Claim
41 words
A flashlight assembly according to claim 1, including an electrically conducting storage container for receiving the extension when disconnected from said jack and not in use, and constructed and arranged to be housed within the casing in tandem with the battery.
Claim 11
Dependent Claim
72 words
A flashlight assembly according to claim 1, in which said extension comprises a flexible lead cord provided at one end with said plug and at the opposite end with a lamp socket in which a lamp is removably receivable, and a rod probe extension having a base electrically Receivable in said socket and provided at its opposite end with a lamp electrically connected through said base and said socket with said cord.
References Cited (Backward Citations)
US1528709A
Cited
US2302248A
Cited
US2427051A
Cited
US2536355A
Cited
US2607829A
Cited
US2818498A
Cited
US3225186A
Cited
US3227948A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |