Patent US5243568A successfully refreshed from Google Patents.
US5243568A
Expired / Lapsed
US
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Bioclock
Assignee: Individual
•
Filing: 1992-02-18
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Granted: 1993-09-07
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Expires: 2012-02-18
Abstract
Abstract An electronic circuit, which, when inserted into a clock/radio, utilizes the time-setting mechanism and the audio system of the clock/radio, and which, in conjunction with a light sensor, causes both light and sound to start at low intensity and increase gradually together to full intensity.
Inventors
- 👤 Nancy Burch
- 👤 Mark Parent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:51
CPC Classifications
G; G04; G04G; G04G13/00; G04G13/02; G04G13/021; G04G13/023; G04G13/028
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
92 words
Electronic alarm device for use with a clock/radio producing an audio signal at a preset time and having volume control means for varying the volume of said audio signal comprising: a lamp connected to said clock/radio and actuated thereby at said preset time; means for gradually varying the intensity of said lamp for a time period after actuation thereof; photo-sensitive means exposed to said lamp for providing a signal to the volume control means at said preset time to thereby gradually vary the volume of said audio signal proportionally to lamp intensity.
Claim 2
Dependent Claim
92 words
Electronic alarm device for use with a clock/radio producing an audio signal at a preset time and having volume control means for varying the volume of said audio signal comprising: a lamp connected to said clock/radio and actuated thereby at said preset time; means for gradually varying the intensity of said lamp for a time period after actuation thereof; photo-sensitive means exposed to said lamp for providing a signal to the volume control means at said preset time to thereby gradually vary the volume of said audio signal proportionally to lamp intensity.
Claim 3
Dependent Claim
14 words
Electronic alarm device according to claim 1, wherein said photo-sensitive means is a photo-resistor.
Claim 4
Dependent Claim
23 words
Electronic alarm device according to claim 1, further comprising a socket outlet attached to said device for accommodating a plug of said lamp.
Claim 5
Dependent Claim
33 words
Electronic alarm device according to claim 1, wherein said means for gradually varying the intensity of said lamp causes the intensity of the lamp to increase gradually from low intensity to full intensity.
Claim 6
Dependent Claim
33 words
Electronic alarm device according to claim 1, wherein said means for gradually varying the intensity of said lamp comprises a triac and a phase angle controller for generating trigger pulses to said 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) | 1996-09-06 | 1997-03-08 | 1997-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-09-06 | 2001-03-08 | 2001-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-09-06 | 2005-03-08 | 2005-09-07 | $7700.00 | Window Closed / Lapsed |