Patent US3842707A successfully refreshed from Google Patents.
US3842707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chord inversion finder
Assignee: Individual
•
Filing: 1974-02-22
•
Granted: 1974-10-22
•
Expires: 1994-02-22
Abstract
Abstract A chord inversion finder for all key signatures and particularly adapted to show the common inversions of three or four tone chords quickly and easily by mere adjustment of a dial or diallike member upon a base dial and having in consecutive peripheral segments the tone names in the regular diatonic chord sequences in two octaves, and the first mentioned dial has positioned indicators pointing out the tones in sequence for at least one chord inversion and possibly for the first, second and third inversions, that is, the specific tones and sequence thereof for such inversions chosen from the two-octave chordal representation in that particular key signature.
Inventors
- 👤 V Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:25
CPC Classifications
G; G10; G10G; G10G1/00; G10G1/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
154 words
A chord inversion finder, comprising: a first dial having a plurality of spaced segments adjacent to the periphery thereof; each of said segments having a display of indicia therein indicating tone names in regular diatonic chord sequence for a particular key signature, and this sequence repeated within the same segment to include the same sequence in the next octave; a second dial mounted on the first dial coaxially therewith and manually rotatable relative thereto; said second dial having a diameter smaller than the first dial to expose said indicia; and said second dial having at least one array thereon selectively shiftable into registration with one of the segments on the first dial; said array having positional indicators to point out the tone in said one segment of an inversion of said diatonic chord, said positional indicators being labeled with the root and degrees of the chord tones in the sequence of the particular inversion.
Claim 2
Dependent Claim
154 words
A chord inversion finder, comprising: a first dial having a plurality of spaced segments adjacent to the periphery thereof; each of said segments having a display of indicia therein indicating tone names in regular diatonic chord sequence for a particular key signature, and this sequence repeated within the same segment to include the same sequence in the next octave; a second dial mounted on the first dial coaxially therewith and manually rotatable relative thereto; said second dial having a diameter smaller than the first dial to expose said indicia; and said second dial having at least one array thereon selectively shiftable into registration with one of the segments on the first dial; said array having positional indicators to point out the tone in said one segment of an inversion of said diatonic chord, said positional indicators being labeled with the root and degrees of the chord tones in the sequence of the particular inversion.
Claim 3
Dependent Claim
30 words
A chord inversion finder according to claim 1 including on said second dial an additional array having positional indicators thereon to point out the tones in the regular chord sequence.
Claim 4
Dependent Claim
27 words
A chord inversion finder according to claim 1 wherein said array has indicia thereon indicating the root, third, fifth and seventh degrees of the corresponding diatonic chord.
Claim 5
Dependent Claim
41 words
A chord inversion finder according to claim 1 wherein said secoNd dial is removable from and replaceable upon said first dial; and including further dials similar to said second dial and having indicia thereon indicating minor, augmented and diminished chords, respectively.
Claim 6
Dependent Claim
46 words
A chord inversion finder according to claim 4 wherein said panel has a pivot pin having a head, and said second dial and further dials have central perforations, dimensioned to snap over said head and means to re-inforce these dials at the edges of said perforations.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |