US3743757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic rhythm instrument with temporary roll beat circuit
Assignee: Nippon Gakki Co Ltd
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Filing: 1972-10-11
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Granted: 1973-07-03
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Expires: 1992-10-11
Abstract
Abstract An automatic rhythm instrument comprises, as a conventional construction, counter stages, rhythm pattern pulse encoding matrix, rhythm selector switches and rhythm sound sources; and as an additional construction, a temporary roll beat circuit including switches directly connecting between the counter stages and the rhythm sound sources. The instrument enables the various rhythm sound sources to be triggered not only by various sets of previously determined ordinary rhythm pattern pulses, but also by any of a plurality of repetitive pulse trains each having a predetermined frequency or time width which are used as temporary roll beat performance.
Inventors
- 👤 S Okamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:36
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/36; G10H1/40; G10H2210/00; G10H2210/341; G10H2210/351; Y; Y10; Y10S; Y10S84/00; Y10S84/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
112 words
An automatic rhythm instrument comprising a clock pulse oscillator generating a repetitive pulse train; a multistage frequency dividing counter chain cascade arranged for connection to the clock pulse oscillator; a rhythm pattern pulse encoder connected to each stage output of the counter chain to produce a plurality of required rhythm pattern pulse trains; rhythm selector switches connected to said encoder; a plurality of rhythm sound sources connected to said rhythm selector switches and each triggered by the preselected one or more of the rhythm pattern pulse trains from the rhythm pattern pulse encoder; and a temporary roll beat circuit including further switches connected between said counter stages and the rhythm sound sources.
Claim 2
Dependent Claim
112 words
An automatic rhythm instrument comprising a clock pulse oscillator generating a repetitive pulse train; a multistage frequency dividing counter chain cascade arranged for connection to the clock pulse oscillator; a rhythm pattern pulse encoder connected to each stage output of the counter chain to produce a plurality of required rhythm pattern pulse trains; rhythm selector switches connected to said encoder; a plurality of rhythm sound sources connected to said rhythm selector switches and each triggered by the preselected one or more of the rhythm pattern pulse trains from the rhythm pattern pulse encoder; and a temporary roll beat circuit including further switches connected between said counter stages and the rhythm sound sources.
Claim 3
Dependent Claim
71 words
An automatic rhythm instrument claimed in claim 1 wherein said temporary roll beat circuit includes a plurality of second switches connected to the predetermined one or More of the rhythm sound sources, and a third selector switch having a movable contact connected to said second switches and having stationary contacts connected to two or more of the outputs from the clock pulse oscillator as well as from the respective counter stages.
Claim 4
Dependent Claim
64 words
An automatic rhythm instrument claimed in claim 2 wherein said temporary roll beat circuit further includes a fourth normally open switch disposed between said second switches and the third selector switch; and a plurality of fifth normally closed switches positioned between the rhythm pattern pulse encoder and the rhythm selector switches, said normally closed fifth switches being gang-actuated with said normally open fourth switch.
Claim 5
Dependent Claim
20 words
An automatic rhythm instrument claimed in claim 1 wherein said counter chain includes a plurality of cascade arranged binary circuits.
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |