US3598890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic musical instrument with magneto-sensitive elements and movable permanent magnet providing glissando
Assignee: Nippon Gakki Co Ltd
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Filing: 1969-06-23
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Granted: 1971-08-10
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Expires: 1989-06-23
Abstract
Abstract A device producing a glissando effect includes a plurality of magneto-sensitive elements arranged in a row in accordance with the respective notes of a musical scale. A permanent magnet is movable along the row of magneto-sensitive elements so as to energize the corresponding elements by its displacement to produce musical notes, the movement of the magnet being controllable at the control panel of the electronic musical instrument.
Inventors
- 👤 Syoichi Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:48
CPC Classifications
G; G10; G10H; G10H1/00; G10H1/32; G10H1/34
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
120 words
A device producing a glissando effect comprising: a plurality of magneto-sensitive elements arranged in a row in accordance with a prescribed order of musical notes; means including a plurality of keys arranged in accordance with said prescribed order and a plurality of magnets coupled to said keys for magnetically controlling respective magnetosensitive elements to produce corresponding musical notes: a control structure including a controller slidably supported thereon, and including means for moving said controller along said row of magneto-sensitive elements; and a magnet connected to said controller and being movable with the sliding movement of said controller in successively confronting relationship with each of said magneto-sensitive elements, such that said magnet energizes said magneto-sensitive elements to produce corresponding musical notes.
Claim 2
Independent Claim
120 words
A device producing a glissando effect comprising: a plurality of magneto-sensitive elements arranged in a row in accordance with a prescribed order of musical notes; means including a plurality of keys arranged in accordance with said prescribed order and a plurality of magnets coupled to said keys for magnetically controlling respective magnetosensitive elements to produce corresponding musical notes: a control structure including a controller slidably supported thereon, and including means for moving said controller along said row of magneto-sensitive elements; and a magnet connected to said controller and being movable with the sliding movement of said controller in successively confronting relationship with each of said magneto-sensitive elements, such that said magnet energizes said magneto-sensitive elements to produce corresponding musical notes.
Claim 3
Dependent Claim
55 words
A device as claimed in claim 1 wherein said control structure further comprises a shield plate removably positioned between said magneto-sensitive elements and said magnet and having openings or notches formed therein, said openings or notches being arranged in registration with selected ones of said magneto-sensitive elements, said magnet energizing only said selected magneto-sensitive elements.
Claim 4
Dependent Claim
16 words
A device as claimed in claim 2 wherein said shield plate is made of magnetic material.
Claim 5
Dependent Claim
27 words
A device as claimed in claim 2 wherein said control structure includes means for moving said shield plate in the direction of said row of magneto-sensitive elements.
Claim 6
Dependent Claim
29 words
A device as claimed in claim 1 wherein said magneto-sensitive elements are magneto-resistors, the electrical resistance of which varies in accordance with the intensity of magnetic field applied thereto.
Claim 7
Dependent Claim
14 words
A device as claimed in claim 1 wherein said magneto-sensitive elements are induction coils.
Claim 8
Dependent Claim
14 words
A device as claimed in claim 1 wherein said magneto-sensitive elements are reed switches.
Claim 9
Dependent Claim
162 words
An electronic musical instrument producing a glissando effect comprising in combination: a plurality of keys arranged in a row in accordance with a prescribed order of musical notes; a pluRality of first magnets respectively coupled to said keys; a plurality of magneto-sensitive elements arranged in a row in corresponding relationship with said keys, each of said magneto-sensitive elements being magnetically controlled to produce a corresponding musical note, said magneto-sensitive elements being selectively controlled by said first magnets; a control structure including: a control panel disposed in parallel with said row of magneto-sensitive elements; and a controller slidably supported on said control panel, said controller having a handle for moving said controller along said row of magneto-sensitive elements; and a second magnet connected to said controller, said second magnet being movable with the sliding movement of said controller in successively confronting relationship with each of said magneto-sensitive elements, such that said second magnet energizes said magneto-sensitive elements in turn to produce musical notes.
Claim 10
Dependent Claim
162 words
An electronic musical instrument producing a glissando effect comprising in combination: a plurality of keys arranged in a row in accordance with a prescribed order of musical notes; a pluRality of first magnets respectively coupled to said keys; a plurality of magneto-sensitive elements arranged in a row in corresponding relationship with said keys, each of said magneto-sensitive elements being magnetically controlled to produce a corresponding musical note, said magneto-sensitive elements being selectively controlled by said first magnets; a control structure including: a control panel disposed in parallel with said row of magneto-sensitive elements; and a controller slidably supported on said control panel, said controller having a handle for moving said controller along said row of magneto-sensitive elements; and a second magnet connected to said controller, said second magnet being movable with the sliding movement of said controller in successively confronting relationship with each of said magneto-sensitive elements, such that said second magnet energizes said magneto-sensitive elements in turn to produce musical notes.
Claim 11
Dependent Claim
59 words
An electronic musical instrument as claimed in claim 8 wherein said control structure further comprises a shield plate removably positioned between said magneto-sensitive elements and said second magnet and having openings or notches formed therein, said openings or notches being arranged in registration with selected ones of said magneto-sensitive elements, said second magnet energizing only said selected magneto-sensitive elements.
Claim 12
Dependent Claim
29 words
An electronic musical instrument as claimed in claim 9 wherein said control structure includes means for moving said shield plate in the direction of said row of magneto-sensitive elements.
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |