US5016229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronically operated clock for hearing impaired persons
Assignee: Individual
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Filing: 1990-06-25
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Granted: 1991-05-14
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Expires: 2010-06-25
Abstract
Abstract An electronic circuit for energizing an electric lamp associated with an alarm clock. Alarm circuitry within the clock energizes an electronic flasher that delivers a control signal to a bidirectional switch means in an A.C. circuit containing the lamp. The switch means triggers a two direction silicon controlled switch means in the lamp circuit. The lamp provides an optical alarm that can be used as a wake-up signal by persons who are deaf but who can see.
Inventors
- 👤 Harry C. Gibbens, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:40
CPC Classifications
G; G04; G04G; G04G11/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
123 words
In an electronically-operated alarm clock having a first D.C. output lamp accessory line, and a second D.C. alarm signal output line: the improvement comprising an electronic flasher means in said alarm signal output line; an A.C.-D.C. interaction line; a manual switch means operable to selectively connect said A.C.-D.C. interaction line to said alarm signal line or to said lamp accessory line; and A.C. circuit that includes a lamp, a two direction silicon controlled rectifier means in series with the lamp, and means for triggering said two direction silicon controlled rectifier means; and an electronic switch means for transferring an electric signal from the A.C.-D.C. interaction line to the A.C. circuit whereby said lamp can be energized by a signal through either output line.
Claim 2
Dependent Claim
123 words
In an electronically-operated alarm clock having a first D.C. output lamp accessory line, and a second D.C. alarm signal output line: the improvement comprising an electronic flasher means in said alarm signal output line; an A.C.-D.C. interaction line; a manual switch means operable to selectively connect said A.C.-D.C. interaction line to said alarm signal line or to said lamp accessory line; and A.C. circuit that includes a lamp, a two direction silicon controlled rectifier means in series with the lamp, and means for triggering said two direction silicon controlled rectifier means; and an electronic switch means for transferring an electric signal from the A.C.-D.C. interaction line to the A.C. circuit whereby said lamp can be energized by a signal through either output line.
Claim 3
Dependent Claim
26 words
The improvement of claim 1 wherein said triggering means comprises a light activitated triac driver, and said two direction silicon controlled rectifier means comprises a triac.
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) | 1994-05-13 | 1994-11-12 | 1995-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-13 | 1998-11-12 | 1999-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-13 | 2002-11-12 | 2003-05-14 | $7700.00 | Window Closed / Lapsed |