Patent US2728894A successfully refreshed from Google Patents.
US4060973A
Expired / Lapsed
US
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Automatic variable-sound alarm clock
Assignee: Individual
•
Filing: 1976-04-02
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Granted: 1977-12-06
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Expires: 1996-04-02
Abstract
Abstract There is disclosed an alarm clock in which the alarm sound is changed automatically at periodic intervals. In the illustrative embodiment of the invention, the clock emits eight different alarm sounds, and the alarm sound is changed automatically every 24 hours. By so changing the alarm sound, a sleeper cannot become accustomed to one particular alarm signal, thereby becoming "immune" to it.
Inventors
- 👤 Dom Martino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:43
CPC Classifications
G; G04; G04G; G04G13/00; G04G13/02; G04G13/021; G04G13/023
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
110 words
An alarm clock comprising display means for displaying the time of day, means for representing a time of day when an alarm is to be sounded, means for generating an alarm sound when the time of day displayed on said display means corresponds to the time of day represented by said representing means, said alarm sound generating means including means for generating at least two predetermined alarm sounds having different tone contents, and means for automatically changing the alarm sound which is generated by said alarm sound generating means at periodic intervals to control the generation of different predetermined alarm sounds when an alarm is first sounded on different days.
Claim 2
Dependent Claim
110 words
An alarm clock comprising display means for displaying the time of day, means for representing a time of day when an alarm is to be sounded, means for generating an alarm sound when the time of day displayed on said display means corresponds to the time of day represented by said representing means, said alarm sound generating means including means for generating at least two predetermined alarm sounds having different tone contents, and means for automatically changing the alarm sound which is generated by said alarm sound generating means at periodic intervals to control the generation of different predetermined alarm sounds when an alarm is first sounded on different days.
Claim 3
Dependent Claim
23 words
An alarm clock in accordance with claim 1 whereon said alarm sound is changed automatically at least as frequently as at 1-day intervals.
Claim 4
Dependent Claim
19 words
An alarm clock in accordance with claim 1 wherein said alarm sound generating means generates eight different alarm sounds.
Claim 5
Dependent Claim
34 words
An alarm clock in accordance with claim 1 wherein said alarm sound generating means generates eight different alarm sounds, with a different alarm sound being generated during each 24-hour period in an 8-day cycle.
Claim 6
Dependent Claim
74 words
An alarm clock in accordance with claim 4 wherein said display means is a digital display having a decade position whose state is controlled by a respective control signal, and said alarm sound generating means includes a plurality of tone generators, the respective tones of which are selectively added together in different combinations, and means for changing the combination in which said tones are added responsive to changes in said decade position control signal.
Claim 7
Dependent Claim
74 words
An alarm clock in accordance with claim 1 wherein said display means is a digital display having a decade position whose state is controlled by a respective control signal, and said alarm sound generating means includes a plurality of tone generators, the respective tones of which are selectively added together in different combinations, and means for changing the combination in which said tones are added responsive to changes in said decade position control signal.
Claim 8
Dependent Claim
31 words
An alarm clock in accordance with claim 1 wherein said alarm sound is changed automatically at one-day intervals and said alarm sound generating means generates at least seven different alarm sounds.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-05 | 1981-06-06 | 1981-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-05 | 1985-06-06 | 1985-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-05 | 1989-06-06 | 1989-12-06 | $7700.00 | Window Closed / Lapsed |