US3726172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
String tensioning device
Assignee: Individual
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Filing: 1971-07-12
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Granted: 1973-04-10
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Expires: 1991-07-12
Abstract
Abstract A string tensioning device is described which selectably provides a coarse turning mode which permits the device to be turned as a whole, and a fine turning mode which provides a rotational and torque reduction between the rotatable section of the device to which the string is attached and a second rotatable section. Two embodiments of the device are described as applied to the tuning pegs used in stringed musical instruments such as the violin, viola, and cello. In these embodiments both the rotational reduction and the torque reduction provided by the device greatly facilitates the tuning of the string in comparison to the tuning action of the standard tuning peg.
Inventors
- 👤 M Sorkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:09
CPC Classifications
G; G10; G10D; G10D3/00; G10D3/14
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
43 words
A string tensioning device comprising: a first rotatable section having string attachment means; a second rotatable section for rotating said first rotatable section; and cam means for reducing the rotation of said first section with respect to the rotation of said second section.
Claim 2
Dependent Claim
43 words
A string tensioning device comprising: a first rotatable section having string attachment means; a second rotatable section for rotating said first rotatable section; and cam means for reducing the rotation of said first section with respect to the rotation of said second section.
Claim 3
Dependent Claim
26 words
A string tensioning device according to claim 1, and further including: selectable means for producing the same amount of rotation of said first and second sections.
Claim 4
Dependent Claim
84 words
A string tensioning device according to claim 1, wherein said cam means for reducing the rotation of said first section with respect to the rotation of said second section comprises: a rotatable shaft having at least a portion of one surface inclined to its axis; a stationary bushing with at least a portion of one surface inclined to its axis and in contact with the inclined surface of said shaft; and screw means for moving said shaft axially to produce rotation of said shaft.
Claim 5
Dependent Claim
26 words
A string tensioning device according to claim 3, and further including: selectable means for producing the same amount of rotation of said first and second sections.
Claim 6
Dependent Claim
59 words
A string tensioning device according to claim 4, in which: said screw means comprises a screw engaged with said first section; and a mating flange portion of said screw slideably engaged in a socket portion of said second section; whereby rotation of said second section rotates said screw and moves said shaft axially to produce rotation of said shaft.
Claim 7
Dependent Claim
68 words
A string tensioning device according to claim 5, in which: said selectable means for producing the same amount of rotation of the said first and second sections comprises a slideable socket portion of said second section; and a mating flange on said stationary bushing adapted to to engage said slideable socket; thus locking the screw means against rotation of said first section with respect to said second section.
Claim 8
Dependent Claim
59 words
A string tensioning device according to claim 3, in which: said screw means comprises a screw engaged with said first section; and a mating flange portion of said screw slideably engaged in a socket portion of said second section; whereby rotation of said second section rotates said screw and moves said shaft axially to produce rotation of said shaft.
Claim 9
Dependent Claim
44 words
A string tensioning device comprising: a first rotatable section having string attachment means; a second rotatable section for rotating said first section; and differential gear reducer means for reducing the rotation of said first section with respect to the rotation of said second section.
Claim 10
Dependent Claim
44 words
A string tensioning device comprising: a first rotatable section having string attachment means; a second rotatable section for rotating said first section; and differential gear reducer means for reducing the rotation of said first section with respect to the rotation of said second section.
Claim 11
Dependent Claim
34 words
A string tensioning device according to claim 8 and further including: selectable means for producing either the same or reduced rotation of said first section with respect to the rotation of said second section.
Claim 12
Dependent Claim
89 words
A string tensioning device according to claim 8, in which: said differential gear reducer means consists of a first face gear on said first section; a stationary bushing having a second face gear adjacent said first face gear; and means rotatably supported and driven by rotation of said second section for connecting said first and second face gears; whereby the rotation of said first section with respect to the rotation of said second section is reduced due to the difference in the number of teeth on said face gears.
Claim 13
Dependent Claim
89 words
A string tensioning device according to claim 9, in which: said differential gear reducer means consists of a first face gear on said first section; a stationary bushing having a second face gear adjacent said first face gear; and means rotatably supported and driven by rotation of said second section for connecting said first and second face gears; whereby the rotation of said first section with respect to the rotation of said second section is reduced due to the difference in the number of teeth on said face gears.
Claim 14
Dependent Claim
55 words
A string tensioning device according to claim 11, in which: said selectable means comprises a slideable socket portion of said second section; and a mating flange on said stationary bushing adapted to engage said slideable socket; thus locking the differential gear reducer means against rotation of said first section with respect to said second section.
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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |