US3968417A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clock-radio with automatically selected battery power
Assignee: Lawrence Peska Associates Inc
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Filing: 1975-05-08
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Granted: 1976-07-06
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Expires: 1995-05-08
Abstract
Abstract A clock radio including, within the housing for the clock radio, a relay coil connected across a line cord for the clock radio, normally open relay contacts connected for passing power to the clock radio from the line cord and normally closed relay contacts connected for passing power from a battery to an inverter input. The inverter output is connected to the clock radio, whereby when line voltage is lost the clock radio is automatically powered by the battery.
Inventors
- 👤 Donald Dials
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:18
CPC Classifications
H; H02; H02J; H02J9/00; H02J9/04; H02J9/06; H02J9/062
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
In combination with alarm clock apparatus, a housing for said alarm clock apparatus, said housing being adapted to receive a battery and connecting means carried by said housing for drawing electric power from a wall outlet, the improvement within said housing comprising: a battery charger fed by said connecting means and having an output connected for charging said battery; an inverter adapted to be fed by said battery, said inverter having an output port connected to a power input port of said alarm clock apparatus; and means for applying power to said alarm clock apparatus from said connecting means when voltage is present on said connecting means and for applying power to said alarm clock apparatus from said battery via said inverter when voltage is not present on said connecting means, wherein said applying means comprises a single relay having a coil connected across said connecting means, said relay having normally open contacts connected between said connecting means and said power input port of said alarm clock apparatus, said relay also having normally closed contacts connected between said battery and an input port of said inverter.
Claim 2
Dependent Claim
186 words
In combination with alarm clock apparatus, a housing for said alarm clock apparatus, said housing being adapted to receive a battery and connecting means carried by said housing for drawing electric power from a wall outlet, the improvement within said housing comprising: a battery charger fed by said connecting means and having an output connected for charging said battery; an inverter adapted to be fed by said battery, said inverter having an output port connected to a power input port of said alarm clock apparatus; and means for applying power to said alarm clock apparatus from said connecting means when voltage is present on said connecting means and for applying power to said alarm clock apparatus from said battery via said inverter when voltage is not present on said connecting means, wherein said applying means comprises a single relay having a coil connected across said connecting means, said relay having normally open contacts connected between said connecting means and said power input port of said alarm clock apparatus, said relay also having normally closed contacts connected between said battery and an input port of said inverter.
References Cited (Backward Citations)
US3136115A
Cited
US3818272A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-06 | 1980-01-05 | 1980-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-06 | 1984-01-05 | 1984-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-06 | 1988-01-05 | 1988-07-06 | $7700.00 | Window Closed / Lapsed |