Patent US3675529A successfully refreshed from Google Patents.
US3675529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromechanical transducer for tuning individual strings of a musical instrument
Assignee: US Philips Corp
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Filing: 1970-11-13
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Granted: 1972-07-11
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Expires: 1990-11-13
Abstract
Abstract An electromechanical transducer for converting the movements of a vibrating string into electric vibrations for use in tuning the string and provided with a forked member which may be clamped between two strings and converts the vibrations of a third string.
Inventors
- 👤 Albertus Cornelis Van De Woerd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:49
CPC Classifications
G; G10; G10G; G10G7/00; G10G7/02; G10H; G10H3/00; G10H3/12; G10H3/14; G10H3/18; Y; Y10; Y10S; Y10S84/00; Y10S84/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
107 words
A device for use in tuning a group of at least three substantially equispaced parallel strings, comprising a forked member having two legs wherein the spacing between the inner surfaces of the legs of the member is at most equal to the spacing between the outer surfaces of the outer strings of the group, the legs of the member thereby restricting vibrational motion of the outer strings, and an electromechanical transducer means affixed to the forked member for converting vibrations of a single center string of the group into an electrical signal while the other strings of the group are restrained from vibration by the forked member.
Claim 2
Independent Claim
107 words
A device for use in tuning a group of at least three substantially equispaced parallel strings, comprising a forked member having two legs wherein the spacing between the inner surfaces of the legs of the member is at most equal to the spacing between the outer surfaces of the outer strings of the group, the legs of the member thereby restricting vibrational motion of the outer strings, and an electromechanical transducer means affixed to the forked member for converting vibrations of a single center string of the group into an electrical signal while the other strings of the group are restrained from vibration by the forked member.
Claim 3
Dependent Claim
43 words
An apparatus as claimed in claim 1, for use with more than three strings wherein the width of each leg of the forked member is at least as great as the spacing between the facing surfaces of two adjacent strings of the group.
Claim 4
Dependent Claim
22 words
An apparatus as claimed in claim 1, wherein at least the free end of each leg of the forked member is wedge-shapped.
Claim 5
Dependent Claim
34 words
An apparatus as claimed in claim 1, wherein the outer and inner surfaces of each leg are provided with notches extending approximately perpendicular to the direction toward which the legs of the fork extend.
Claim 6
Dependent Claim
19 words
An apparatus as claimed in claim 1, wherein the transducer is located between the legs of the forked member.
References Cited (Backward Citations)
US2539297A
Cited
US2628343A
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US2725778A
Cited
US3113990A
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US3018680A
Cited
US3265992A
Cited
US3183761A
Cited
US3539700A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |