US3745872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for use in transposing musical keys or notes
Assignee: Individual
•
Filing: 1971-06-23
•
Granted: 1973-07-17
•
Expires: 1991-06-23
Abstract
Abstract A device for use in transposing musical keys or notes comprises two scale-carrying members which when aligned, show not only the relation of the new key signature to the old key signature, but also the equivalents between all the notes of the new and the old key signatures.
Inventors
- 👤 M Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:17
CPC Classifications
G; G10; G10G; G10G1/00; G10G1/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
154 words
A device, for use in transposing musical keys and notes, comprising a support, two bearings carried by said support, a flexible endless belt mounted about said two bearings so as to be longitudinally movable with respect to the support, the support and belt each having marked thereon a row of symbols indicating respectively musical notes and a key of music, according to the function of transposition required, said two rows of symbols being positioned in juxtaposed parallel relation, whereby fOr transposing music into a different key the support and the belt may be moved relatively one with respect to the other to align a first key symbol marked on one of said support and said belt with a second new key symbol marked on the other of said support and said belt, whereupon the first key symbols of a full musical scale become aligned with second new key symbols of a full musical scale.
Claim 2
Independent Claim
154 words
A device, for use in transposing musical keys and notes, comprising a support, two bearings carried by said support, a flexible endless belt mounted about said two bearings so as to be longitudinally movable with respect to the support, the support and belt each having marked thereon a row of symbols indicating respectively musical notes and a key of music, according to the function of transposition required, said two rows of symbols being positioned in juxtaposed parallel relation, whereby fOr transposing music into a different key the support and the belt may be moved relatively one with respect to the other to align a first key symbol marked on one of said support and said belt with a second new key symbol marked on the other of said support and said belt, whereupon the first key symbols of a full musical scale become aligned with second new key symbols of a full musical scale.
Claim 3
Dependent Claim
28 words
A device, as claimed in claim 1, wherein said belt is transparent, and wherein the symbol-carrying portion of said belt passes over the symbol-carrying portion of said support.
Claim 4
Dependent Claim
19 words
A device, as claimed in claim 1, wherein at least one of said bearings is a manually rotatable spindle.
Claim 5
Dependent Claim
29 words
A device, as claimed in claim 3, wherein said support comprises a window area and wherein the symbol-carrying portion of said belt is disposed to travel beneath said window.
Claim 6
Dependent Claim
28 words
A device, as claimed in claim 3, wherein said belt is transparent, and wherein the symbol-carrying portion of said belt passes over the symbol-carrying portion of said support.
Claim 7
Dependent Claim
29 words
A device, as claimed in claim 1, wherein said support comprises a window area, and wherein the symbol-carrying portion of said belt is disposed to travel beneath said window.
Claim 8
Dependent Claim
24 words
A device, as claimed in claim 6, wherein said support is of hollow box-like form, and wherein said belt is enclosed within said support.
Claim 9
Dependent Claim
31 words
A device, as claimed in claim 7, wherein the support is of hollow box-like form, and wherein said bearings and a lower run of said belt are disposed within said support.
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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |