US3787678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rechargeable battery powered light
Assignee: Individual
•
Filing: 1972-12-13
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Granted: 1974-01-22
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Expires: 1992-12-13
Abstract
Abstract An improved flashlight that includes D.C. current dry cell batteries which can be readily replaced or which alternately can be easily recharged without need to be removed from the flashlight case; the device including a receptacle in circuit with the batteries, the receptacle being adaptable to receive a plug on an extension cord that can be connected to either a 6 or 12 volt D.C. direct current outlet such as on an automotive vehicle or portable battery charger.
Inventors
- 👤 R Rainer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:19
CPC Classifications
F; F21; F21L; F21L4/00; F21L4/08; F21L4/085; F21V; F21V23/00; F21V23/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
In a rechargeable battery powered light, the combination of a case having a removable end cap at a rear end for closing a rear opening in said case, D.C. currenT dry cell batteries being removably received through said opening into an interior chamber of said case, a lamp in a front end of said case, a switch on a side of said case, said batteries, lamp and switch being in a series electrical circuit, a recharging receptacle on said case for receiving a male plug connected to an external electric power source, said recharging receptacle having terminals electrically connected to opposite terminals of said batteries, and a safety cover being slidable along an outer side of said case so to selectively cover up a normally exposed switch button of said switch during recharging period and preventing said circuit accidentally being closed at such recharging time.
Claim 2
Dependent Claim
145 words
In a rechargeable battery powered light, the combination of a case having a removable end cap at a rear end for closing a rear opening in said case, D.C. currenT dry cell batteries being removably received through said opening into an interior chamber of said case, a lamp in a front end of said case, a switch on a side of said case, said batteries, lamp and switch being in a series electrical circuit, a recharging receptacle on said case for receiving a male plug connected to an external electric power source, said recharging receptacle having terminals electrically connected to opposite terminals of said batteries, and a safety cover being slidable along an outer side of said case so to selectively cover up a normally exposed switch button of said switch during recharging period and preventing said circuit accidentally being closed at such recharging time.
References Cited (Backward Citations)
US1506302A
Cited
US2818498A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |