US3743758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical metronome
Assignee: Castillo J Del
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Filing: 1971-08-12
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Granted: 1973-07-03
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Expires: 1991-08-12
Abstract
Abstract An optical metronome using a strip with musical staff thereon folded in zig-zag form moved past a lamp in accordance with the speed of the musical tempo. The notes therefor are viewed through a channel window as the strip moves from one triangularly shaped depository to another.
Inventors
- 👤 Castillo J Del
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:36
CPC Classifications
G; G04; G04F; G04F5/00; G04F5/02; G10; G10G; G10G1/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
111 words
An optical metronome comprising a zig-zag folded strip having musical notes deposited thereon, first and second depositories to hold and receive said strip, a channel connecting between said first and second depositories, means to move said strip through said channel in relation to the tempo of the musical notes depicted thereon, means to aid in viewing the notes on said strip, said depositories having a substantially triangular shape with side walls converging toward openings in said channel, said side walls positioned for guiding said strip into and out of said channel and having lengths measured from said openings in said channel substantially the width of a folded portion of said strip.
Claim 2
Dependent Claim
111 words
An optical metronome comprising a zig-zag folded strip having musical notes deposited thereon, first and second depositories to hold and receive said strip, a channel connecting between said first and second depositories, means to move said strip through said channel in relation to the tempo of the musical notes depicted thereon, means to aid in viewing the notes on said strip, said depositories having a substantially triangular shape with side walls converging toward openings in said channel, said side walls positioned for guiding said strip into and out of said channel and having lengths measured from said openings in said channel substantially the width of a folded portion of said strip.
Claim 3
Dependent Claim
63 words
The optical metronome of claim 1, further characterized by said means to move said strip through said channel including a pair of rollers mounted on said channel to receive said strip therebetween, motor means to rotate one of said rollers at a speed related to the tempo of the music depicted on said strip, the other of said rollers acting as an idler.
Claim 4
Dependent Claim
54 words
The optical metronome of claim 1, further characterized by said means to aid in viewing the notes on said strip including a window in said channel extending therethrough, and lighting means mounted at said window at the side opposite from which the notes on said strip are viewed, to pass light through said strip.
Claim 5
Dependent Claim
61 words
The optical metronome of claim 1, further characterized by each of said depositories having parallel wall portions extending from the outer portions of Said converging side walls having a length at least the thickness of said strip in zig-zag folded condition, said parallel wall portions connected by a wall at their opposite ends from their attachment to said converging side walls.
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |