US4248127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
String nut
Assignee: Individual
•
Filing: 1980-01-22
•
Granted: 1981-02-03
•
Expires: 2000-01-22
Abstract
Abstract A rod secured across the width of the guitar peghead by a plurality of spaced apart fasteners, the rod having a roller disposed thereon for each guitar string, with each roller receiving a string between the roller and the peghead, and means for securing the rollers to the rod, such that when strings are pressed down above the string nut and released they will easily slide back to their original position, thereby allowing the playing of special effects above the fretboard.
Inventors
- 👤 Thomas G. Lieber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:23
CPC Classifications
G; G10; G10D; G10D1/00; G10D1/04; G10D1/05; G10D1/08; G10D3/00; G10D3/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
80 words
A string nut for guitars comprising a plurality of rollers secured across the upper face of the peghead adjacent the neck and in alignment with the guitar strings, the rollers being spaced slightly above the peghead with the strings running under the rollers, the rollers further having their cylindrical axes substantially parallel to the guitar frets, such that when the strings are pressed down immediately above the string nut and released they will easily slide back to their original position.
Claim 2
Dependent Claim
80 words
A string nut for guitars comprising a plurality of rollers secured across the upper face of the peghead adjacent the neck and in alignment with the guitar strings, the rollers being spaced slightly above the peghead with the strings running under the rollers, the rollers further having their cylindrical axes substantially parallel to the guitar frets, such that when the strings are pressed down immediately above the string nut and released they will easily slide back to their original position.
Claim 3
Dependent Claim
36 words
The string nut of claim 1 wherein the rollers are disposed on a rod extending across the peghead, the rod having a plurality of fasteners alternating with the rollers for securing the rollers to the peghead.
Claim 4
Dependent Claim
40 words
The string nut of claim 2 wherein the fasteners comprise rectangular plates having bores for receiving the rod, with each plate being secured to the peghead by means of screws running through the plate above and below the bore thereof.
Claim 5
Dependent Claim
29 words
The string nut of claim 3 additionally comprising washers of varying sizes disposed between the rollers and the rectangular plates, for increasing or decreasing the spacing between the rollers.
Claim 6
Dependent Claim
36 words
The string nut of claim 4 wherein the ends of the rod are threaded, and additionally comprising acorn nuts screwed onto the threaded ends of the rod for securing together the rollers, washers, fasteners and rod.
Claim 7
Dependent Claim
90 words
In combination with a guitar having an unnotched nut above the first fret, a string nut comprising a plurality of rollers secured across the upper face of the peghead adjacent the neck and in alignment with the guitar strings, the rollers being spaced slightly above the peghead with the strings running under the rollers, the rollers further having their cylindrical axes substantially parallel to the guitar frets, such that when the strings are pressed down above the string nut and released they will easily slide back to their original position.
Claim 8
Dependent Claim
90 words
In combination with a guitar having an unnotched nut above the first fret, a string nut comprising a plurality of rollers secured across the upper face of the peghead adjacent the neck and in alignment with the guitar strings, the rollers being spaced slightly above the peghead with the strings running under the rollers, the rollers further having their cylindrical axes substantially parallel to the guitar frets, such that when the strings are pressed down above the string nut and released they will easily slide back to their original position.
References Cited (Backward Citations)
FR394266A
Cited
US1173002A
Cited
US1834695A
Cited
US2191776A
Cited
US2214957A
Cited
US2771808A
Cited
GB985453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-03 | 1984-08-04 | 1985-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-03 | 1988-08-04 | 1989-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-03 | 1992-08-04 | 1993-02-03 | $7700.00 | Window Closed / Lapsed |