Patent US3830132A successfully refreshed from Google Patents.
US3830132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tuning peg
Assignee: Individual
•
Filing: 1973-04-10
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Granted: 1974-08-20
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Expires: 1993-04-10
Abstract
Abstract A relatively small and light piston like tuning peg in which the string to be tuned or tensioned, is secured to the piston, said piston being slidably keyed inside a cup-like cylindrical housing, said piston being lengthwise movable inside said housing by a fixed rotary screw, movement of said piston on said screw having zero backlash.
Inventors
- 👤 C Lowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:09
CPC Classifications
G; G10; G10D; G10D3/00; G10D3/14
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
253 words
A tuning peg, comprising: a cylindrical housing adapted to be fixedly disposed in an opening in the peghead of a stringed musical instrument, said housing having an elongated central chamber which is open at its outer end and which has a bottom wall at the opposite end thereof, said housing having an elongated keyway in the sidewall of said chamber; a piston slidably disposed in said chamber and having a key projecting into said keyway so that said piston can be moved lengthwise in said chamber and is held against rotation, said piston having inner and outer spaced-apart enlarged heads for slidably engaging the internal sidewall of said chamber and also having a portion of reduced diameter between said heads, said portion having a transverse hole therethrough adjacent said inner head for receiving a string of the musical instrument, said outer head having slot means for receiving said string whereby an end of said string can be extended through said hole, wrapped around said reduced diameter portion and then disposed in said slot means whereby to secure said string to said piston; said piston having an inner end portion extending through an opening in the bottom wall of said chamber; a tuning screw threadedly engaged with said inner end portion of said piston, said tuning screw being supported for rotation relative to said housing but being held against lengthwise movement relative thereto whereby rotation of said tuning screw moves said piston lengthwise in said central chamber of said housing to tune said string.
Claim 2
Dependent Claim
253 words
A tuning peg, comprising: a cylindrical housing adapted to be fixedly disposed in an opening in the peghead of a stringed musical instrument, said housing having an elongated central chamber which is open at its outer end and which has a bottom wall at the opposite end thereof, said housing having an elongated keyway in the sidewall of said chamber; a piston slidably disposed in said chamber and having a key projecting into said keyway so that said piston can be moved lengthwise in said chamber and is held against rotation, said piston having inner and outer spaced-apart enlarged heads for slidably engaging the internal sidewall of said chamber and also having a portion of reduced diameter between said heads, said portion having a transverse hole therethrough adjacent said inner head for receiving a string of the musical instrument, said outer head having slot means for receiving said string whereby an end of said string can be extended through said hole, wrapped around said reduced diameter portion and then disposed in said slot means whereby to secure said string to said piston; said piston having an inner end portion extending through an opening in the bottom wall of said chamber; a tuning screw threadedly engaged with said inner end portion of said piston, said tuning screw being supported for rotation relative to said housing but being held against lengthwise movement relative thereto whereby rotation of said tuning screw moves said piston lengthwise in said central chamber of said housing to tune said string.
Claim 3
Dependent Claim
72 words
A tuning peg according to claim 1, in which said housing has an outwardly projecting flange at its outer end adapted to engage one surface of said peghead and over which the string can pass, said outer head of said piston having an axially extending groove in its periphery for receiving the string so that when said outer head is disposed in said central chamber, the string will extend through said groove.
Claim 4
Dependent Claim
72 words
A tuning peg according to claim 2, in which said cylindrical housing has a threaded portion projecting axially from the bottom wall of said chamber, a cap threadedly engaged with said threaded portion and having an outwardly projecting flange adapted to abut against the opposite surface of said peghead whereby said cylindrical housing can be clamped to said peghead, said tuning screw being supported on said cap for rotation with respect thereto.
Claim 5
Dependent Claim
33 words
A tuning peg according to claim 3, in which said piston has an axially extending internally threaded opening and said tuning screw is externally threaded and is threadedly engaged in said threaded opening.
Claim 6
Dependent Claim
32 words
A tuning peg according to claim 4, wherein said slot means in said outer head comprises a slot extending perpendicular to said transverse hole in said reduced diameter portion of said piston.
Claim 7
Dependent Claim
219 words
A tuning peg, comprising: a hollow housing adapted to be fixedly disposed in an opening in the peghead of a stringed musical instrument, said housing having an elongated central chamber which is open at its outer end; a rod slidably disposed in said chamber, said housing and said rod having cooperating key and keyway means so that said rod can be moved lengthwise in said chamber and is held against rotation therein, said rod having inner and outer spaced-apart enlarged portions for slidably engaging the internal sidewall of said chamber and also having an intermediate portion of reduced diameter between said inner and outer portions, said intermediate portion having a transverse hole therethrough adjacent said inner portion for receiving a string of the musical instrument, said outer portion having slot means for receiving said string whereby an end of said string can be extended through said hole, wrapped around said intermediate portion and then disposed in said slot means whereby to secure said string to said rod; a tuning screw threadedly engaged with said inner portion of said rod, said tuning screw being supported for rotation relative to said housing but being held against lengthwise movement relative thereto whereby rotation of said tuning screw moves said rod lengthwise in said central chamber of said housing to tune said string.
Claim 8
Dependent Claim
219 words
A tuning peg, comprising: a hollow housing adapted to be fixedly disposed in an opening in the peghead of a stringed musical instrument, said housing having an elongated central chamber which is open at its outer end; a rod slidably disposed in said chamber, said housing and said rod having cooperating key and keyway means so that said rod can be moved lengthwise in said chamber and is held against rotation therein, said rod having inner and outer spaced-apart enlarged portions for slidably engaging the internal sidewall of said chamber and also having an intermediate portion of reduced diameter between said inner and outer portions, said intermediate portion having a transverse hole therethrough adjacent said inner portion for receiving a string of the musical instrument, said outer portion having slot means for receiving said string whereby an end of said string can be extended through said hole, wrapped around said intermediate portion and then disposed in said slot means whereby to secure said string to said rod; a tuning screw threadedly engaged with said inner portion of said rod, said tuning screw being supported for rotation relative to said housing but being held against lengthwise movement relative thereto whereby rotation of said tuning screw moves said rod lengthwise in said central chamber of said housing to tune said string.
Claim 9
Dependent Claim
34 words
A tuning peg according to claim 6, in which the edge of the upper end of said chamber has a smoothly rounded portion to facilitate bending of the string as it enters said chamber.
Claim 10
Dependent Claim
94 words
A tuning peg according to claim 6, in which said housing has an outwardly projecting flange at its outer end adapted to engage one surface of said peghead and over which the string can pass, said flange having at least one pinpoint protrusion for penetrating the peghead to prevent rotational movement between said housing and said peghead, said outer portion of said rod having an axially extending groove in its periphery for receiving the string so that when said outer portion is disposed in said central chamber, the string will extend through said groove.
Claim 11
Dependent Claim
38 words
A tuning peg according to claim 6, in which said slot means in said outer portion comprises a first slot extending substantially perpendicular to said transverse hole and a second slot extending substantially perpendicular to said first slot.
Claim 12
Dependent Claim
34 words
A tuniNg peg according to claim 6, in which said intermediate portion has an axially extending flat wall spaced from the wall of said chamber a distance greater than two thicknesses of the string.
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) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |