Patent US3602189A successfully refreshed from Google Patents.
US3602189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for automatically sounding wind instruments
Assignee: Tokyo Pigeon Co Ltd
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Filing: 1970-07-28
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Granted: 1971-08-31
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Expires: 1990-07-28
Abstract
Abstract A whistle is blown by air supplied by a bellows operated by a bellows-actuating cam, by which the sound duration and loudness can be controlled, and the pitch of the sound thus produced is controllably varied by a pitch-control cam, both cams being mounted on the periphery of a spring-operated barrel, whereby whistle sound compositions of great variety can be rendered automatically.
Inventors
- 👤 Yoshito Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:09
CPC Classifications
G; G10; G10F; G10F1/00; G10F1/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
165 words
In a device for automatically sounding a wind instrument of the class wherein means for controllably varying the length of the air column in the vibration chamber of Said instrument is actuated by a sound pitch-control cam moving at substantially constant speed, the improved combination therewith of a bellowsactuating cam driven together with said pitch-control cam and provided around its peripheral cam surface with numerous cam teeth of tooth profile in accordance with at least respective sound durations, a bellows having an actuating head and an air discharge port connected to said wind instrument, said bellows having an elastic characteristic whereby it can be compressed but continually tends to return to a normally expanded state, and a lever mechanism having a cam-following part for engaging and following said cam tooth profile and an actuating part coupled to said actuating head of the bellows, whereby the bellows is compressed in accordance with the cam tooth profile to blow air into and thereby sound the wind instrument.
Claim 2
Dependent Claim
165 words
In a device for automatically sounding a wind instrument of the class wherein means for controllably varying the length of the air column in the vibration chamber of Said instrument is actuated by a sound pitch-control cam moving at substantially constant speed, the improved combination therewith of a bellowsactuating cam driven together with said pitch-control cam and provided around its peripheral cam surface with numerous cam teeth of tooth profile in accordance with at least respective sound durations, a bellows having an actuating head and an air discharge port connected to said wind instrument, said bellows having an elastic characteristic whereby it can be compressed but continually tends to return to a normally expanded state, and a lever mechanism having a cam-following part for engaging and following said cam tooth profile and an actuating part coupled to said actuating head of the bellows, whereby the bellows is compressed in accordance with the cam tooth profile to blow air into and thereby sound the wind instrument.
Claim 3
Dependent Claim
59 words
An improved combination as claimed in claim 1 in which said means for controllably varying the length of the air column in the vibration chamber of the instrument is a piston which is slidably operable within said chamber and is connected to a piston rod coupled to and actuated by a lever mechanism actuated by said sound pitch-control cam.
Claim 4
Dependent Claim
36 words
An improved combination as claimed in claim 1 in which said pitch-control cam and bellows-actuating cam are both formed on the outer cylindrical periphery of a single, hollow rotating barrel rotationally driven by a spring mechanism.
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) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |