Patent US3341840A successfully refreshed from Google Patents.
US3341840A
Expired / Lapsed
US
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Combination metronome and pitch tone generator
Assignee: Individual
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Filing: 1964-04-22
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Granted: 1967-09-12
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Expires: 1984-04-22
Abstract
No abstract record available.
Inventors
- 👤 Herschell A Berkheiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:18
CPC Classifications
G; G04; G04F; G04F5/00; G04F5/02; G04F5/025; G10; G10H; G10H1/00; G10H1/36; G10H1/40; H; H03; H03B; H03B5/00; H03B5/20; H03B5/24; H03B2201/00; H03B2201/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A COMBINATION METRONOME AND TONE GENERATOR COMPRISING AN ELECTRONIC CIRCUIT FOR SELECTIVELY GENERATING IN A FIRST MODE OF OPERATION A SERIES OF REPETITIVE PULSES HAVING A REPETITION RATE ADJUSTABLE IN THE RANGE OF ABOUT 40 TO 208 PULSES PER MINUTE AND IN A SECOND MODE OF OPERATION AN ALTERNATING CURRENT SIGNAL HAVING A PRESELECTED FREQUENCY WITHIN THE AUDIO RANGE, A BATTERY FOR ENERGIZING SAID CIRCUIT, MEANS INCLUDING A TWO TERMINAL JACK IN SERIES FOR CONNECTING SAID BATTERY TO SAID CIRCUIT SO THAT THE CONNECTION IS ESTABLISHED ONLY WHEN A PLUG IS IN SAID JACK, AN EARPHONE INCLUDING A TWO TERMINAL PLUG RECEIVABLE IN SAID JACK FOR CONVERTING THE SIGNALS GENERATED BY SAID ELECTRONIC CIRCUIT TO AUDIBLE SIGNALS AND FOR ESTABLISHING CONNECTION FROM SAID BATTERY TO SAID ELECTRONIC CIRCUIT, AND A SWITCH FOR EFFECTING ALTERNATE SELECTION BETWEEN SAID FIRST AND SECOND MODES OF OPERATION.
Claim 2
Dependent Claim
143 words
A COMBINATION METRONOME AND TONE GENERATOR COMPRISING AN ELECTRONIC CIRCUIT FOR SELECTIVELY GENERATING IN A FIRST MODE OF OPERATION A SERIES OF REPETITIVE PULSES HAVING A REPETITION RATE ADJUSTABLE IN THE RANGE OF ABOUT 40 TO 208 PULSES PER MINUTE AND IN A SECOND MODE OF OPERATION AN ALTERNATING CURRENT SIGNAL HAVING A PRESELECTED FREQUENCY WITHIN THE AUDIO RANGE, A BATTERY FOR ENERGIZING SAID CIRCUIT, MEANS INCLUDING A TWO TERMINAL JACK IN SERIES FOR CONNECTING SAID BATTERY TO SAID CIRCUIT SO THAT THE CONNECTION IS ESTABLISHED ONLY WHEN A PLUG IS IN SAID JACK, AN EARPHONE INCLUDING A TWO TERMINAL PLUG RECEIVABLE IN SAID JACK FOR CONVERTING THE SIGNALS GENERATED BY SAID ELECTRONIC CIRCUIT TO AUDIBLE SIGNALS AND FOR ESTABLISHING CONNECTION FROM SAID BATTERY TO SAID ELECTRONIC CIRCUIT, AND A SWITCH FOR EFFECTING ALTERNATE SELECTION BETWEEN SAID FIRST AND SECOND MODES OF OPERATION.
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |