Patent US3596552A successfully refreshed from Google Patents.
US3596552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Devices for securing strings in musical instruments
Assignee: NORDISKA PIANO AB
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Filing: 1970-02-13
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Granted: 1971-08-03
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Expires: 1990-02-13
Abstract
Abstract A device which serves to secure strings in pianos and like stringed instruments in a simple and reliable manner with the aid of a swingably mounted tension element having an arcuate portion and a likewise arcuate groove therein, in which the string is placed in a state folded back upon itself so as to be clamped in the groove by wedge action when the element is swung and thereby tensioned.
Inventors
- 👤 Birger Lager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:24
CPC Classifications
G; G10; G10C; G10C3/00; G10C3/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
181 words
A device for securing strings in pianos and like stringed instruments to an element that is arranged to be swung for tightening or tuning the string, wherein the device comprises an element which can be swung about an axis transverse to the direction of the string and in which a V-shaped groove is formed so as to extend in an arc around said transverse axis, a pin extending transversely of the direction of the string is provided at the distal end of said groove as viewed from the end of the string secured to an abutment, and the distance between the boundary walls of the V-shaped groove at the bottom thereof is smaller than the cross section of the string, and a part of the string is bent about said pin and drawn along the bottom of the groove at some distance therefrom, while that part of the string which is fixed to the abutment shall extend, counted from the string part bent around the pin, along the groove exteriorly of said string part to urge it inwardly in the groove.
Claim 2
Independent Claim
181 words
A device for securing strings in pianos and like stringed instruments to an element that is arranged to be swung for tightening or tuning the string, wherein the device comprises an element which can be swung about an axis transverse to the direction of the string and in which a V-shaped groove is formed so as to extend in an arc around said transverse axis, a pin extending transversely of the direction of the string is provided at the distal end of said groove as viewed from the end of the string secured to an abutment, and the distance between the boundary walls of the V-shaped groove at the bottom thereof is smaller than the cross section of the string, and a part of the string is bent about said pin and drawn along the bottom of the groove at some distance therefrom, while that part of the string which is fixed to the abutment shall extend, counted from the string part bent around the pin, along the groove exteriorly of said string part to urge it inwardly in the groove.
Claim 3
Dependent Claim
28 words
A device as claimed in claim 1, wherein the V-shaped groove runs in an arc concentrically around the axis which the element can be caused to swing about.
Claim 4
Dependent Claim
54 words
A device as claimed in claim 1, wherein the V-shaped groove extends along a portion of the element that has an arcuate surface which is adapted to engage with and be received in an arcuate recess in a support, so that upon swinging of the element the arcuate surface will slide in said recess.
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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |