Patent US3818693A successfully refreshed from Google Patents.
US3818693A
Expired / Lapsed
US
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Electronic metronome
Assignee: Individual
•
Filing: 1973-10-25
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Granted: 1974-06-25
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Expires: 1993-10-25
Abstract
Abstract A circuit including an oscillator generates pulse signals energizing selectively spaced indicator lamps excited in a pattern corresponding in location to the pattern described by an orchestra leader''s hand movements indicating standard beat locations.
Inventors
- 👤 F Allard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:37
CPC Classifications
G; G04; G04F; G04F5/00; G04F5/02; G04F5/025
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
85 words
A metronome, comprising: an oscillator for producing electrical signals; means including a countercircuit having a plurality of output terminals for generating output signals in response to input signals applied thereto from said oscillator, the characteristic of said output signals being different than said input signals from said oscillator and the frequency of said output signals being lower than the frequency of the oscillator signals applied thereto; a plurality of visual indicators; and, means for applying said output signals to said indicators in a selected sequencE.
Claim 2
Dependent Claim
85 words
A metronome, comprising: an oscillator for producing electrical signals; means including a countercircuit having a plurality of output terminals for generating output signals in response to input signals applied thereto from said oscillator, the characteristic of said output signals being different than said input signals from said oscillator and the frequency of said output signals being lower than the frequency of the oscillator signals applied thereto; a plurality of visual indicators; and, means for applying said output signals to said indicators in a selected sequencE.
Claim 3
Dependent Claim
47 words
The metronome according to claim 1 in which said countercircuit includes a pair of flip-flop circuits and said means for applying includes at least four AND gates respectively connected with the output terminals of said flip-flop circuits for selecting output signals to be applied to said indicators.
Claim 4
Dependent Claim
20 words
The metronome according to claim 2 and further including an amplifier interposed between each said AND gate and said indicator.
Claim 5
Dependent Claim
39 words
The metronome according to claim 3 in which said signal applying means further includes: a reset circuit including a normally open switch connected with the output of at least one AND gate and at least one said flip-flop circuit.
Claim 6
Dependent Claim
44 words
The metronome according to claim 4 in which said signal applying means further includes: time delay means connected with said reset circuit, said time delay means including a capacitor connected in series with said switch and a resistor connecting said reset circuit to ground.
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) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |