US4134326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for computing musical relationships
Assignee: Individual
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Filing: 1977-02-25
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Granted: 1979-01-16
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Expires: 1997-02-25
Abstract
Abstract A device which is used for computing the transposition of musical chords and comprises a number of dials each of which is rotatable about a central axis. Each dial has a display of indicia thereon which indicate the steps of a chromatic musical scale. The dials can be moved relative to each other to a plurality of positions which indicate relationships which include chord indication and transposition.
Inventors
- 👤 Peter G. Hutton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:57
CPC Classifications
G; G09; G09B; G09B15/00; G09B15/001; G09B15/004
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
167 words
A device for computing the transposition of musical chords comprising an axle; a number of annular rings rotatably mounted on said axle, the peripheral surface of each ring having printed thereon indicia representing the successive notes of the chromatic scale: a base member with a pair of spaced apart uprights, said uprights having curved indents at the upper ends thereof in which said axle engages to be supported above said base; a plurality of separating discs, of greater diameter than said annular rings, mounted on and coaxial with said axle, there being a separating disc located between each adjacent pair of annular rings; and a viewing screen mounted on said uprights, said viewing screen being of a length to extend over all the rings and having an elongate opening through which a series of aligned indicia on adjacent rings can be viewed, sid annular rings being movable to positions relative to each other at a plurality of positions to indicate relationships which include chord indication and transposition.
Claim 2
Independent Claim
167 words
A device for computing the transposition of musical chords comprising an axle; a number of annular rings rotatably mounted on said axle, the peripheral surface of each ring having printed thereon indicia representing the successive notes of the chromatic scale: a base member with a pair of spaced apart uprights, said uprights having curved indents at the upper ends thereof in which said axle engages to be supported above said base; a plurality of separating discs, of greater diameter than said annular rings, mounted on and coaxial with said axle, there being a separating disc located between each adjacent pair of annular rings; and a viewing screen mounted on said uprights, said viewing screen being of a length to extend over all the rings and having an elongate opening through which a series of aligned indicia on adjacent rings can be viewed, sid annular rings being movable to positions relative to each other at a plurality of positions to indicate relationships which include chord indication and transposition.
Claim 3
Dependent Claim
17 words
The device as claimed in claim 1, wherein the viewing screen is detachably mounted on said uprights.
Claim 4
Dependent Claim
16 words
The device as claimed in claim 1 wherein eight annular rings are mounted on the axle.
Claim 5
Dependent Claim
21 words
The device as claimed in claim 3, wherein the annular rings are not freely rotatable but require a degree of effort.
Claim 6
Dependent Claim
48 words
The device as claimed in claim 2, wherein the viewing screen consists of a rectangular panel in which the elongate opening is formed, said panel being curved across its width said width being more than the arc length of a single indicia containing segments of each annular ring.
Claim 7
Dependent Claim
17 words
The device as claimed in claim 1 wherein each separating disc is fixedly attached to the axle.
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) | 1982-01-15 | 1982-07-17 | 1983-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-15 | 1986-07-17 | 1987-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-15 | 1990-07-17 | 1991-01-16 | $7700.00 | Window Closed / Lapsed |