US4248126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable bridge
Assignee: Individual
•
Filing: 1980-01-22
•
Granted: 1981-02-03
•
Expires: 2000-01-22
Abstract
Abstract A panel having a rear wall is movably secured to the lower portion of a guitar body by a pair of screws allowing it to be moved toward and away from the guitar body. A sliding member is disposed in the panel under each guitar string, with a string contacting member secured on top of each slidable member and itself being slidable laterally thereon. Accordingly, guitar strings can be adjusted up and down the guitar, toward and away from the body, and across the fretboard, to thereby achieve optimum intonation and playability.
Inventors
- 👤 Thomas G. Lieber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:54
CPC Classifications
G; G10; G10D; G10D3/00; G10D3/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
154 words
An adjustable bridge for guitars comprising: (a) a panel extending under the guitar strings adjacent the lower ends thereof and being substantially parallel to the upper surface of the guitar body, (b) means for securing the panel to the guitar body and allowing the panel to be manually raised or lowered above the guitar body, (c) a sliding member disposed on the panel beneath each guitar string, with each sliding member being adapted for individual sliding movement on the panel under and along a string, (d) a string contacting member connected above each sliding member and being adapted for movement laterally across each sliding member, such that strings can be moved individually in either direction across the guitar fretboard, with the sliding members allowing adjustment of the point of contact between the string contacting member and an individual string, and (e) means for arresting movement of the string contacting member on each sliding member.
Claim 2
Dependent Claim
154 words
An adjustable bridge for guitars comprising: (a) a panel extending under the guitar strings adjacent the lower ends thereof and being substantially parallel to the upper surface of the guitar body, (b) means for securing the panel to the guitar body and allowing the panel to be manually raised or lowered above the guitar body, (c) a sliding member disposed on the panel beneath each guitar string, with each sliding member being adapted for individual sliding movement on the panel under and along a string, (d) a string contacting member connected above each sliding member and being adapted for movement laterally across each sliding member, such that strings can be moved individually in either direction across the guitar fretboard, with the sliding members allowing adjustment of the point of contact between the string contacting member and an individual string, and (e) means for arresting movement of the string contacting member on each sliding member.
Claim 3
Dependent Claim
59 words
The adjustable bridge of claim 1 wherein the means for securing the panel to the guitar body comprises a pair of screws inset into the panel, one on each side thereof, the screws extending into threaded metal inserts set into the guitar body, the lower portions of the screws being substantially greater in diameter than the upper portions thereof.
Claim 4
Dependent Claim
64 words
The adjustable bridge of claim 1 wherein the panel additionally comprises a rear wall projecting vertically above the panel but below the upper level of the string contacting members, and screws extending through apertures of the rear wall into threaded apertures located on the sliding members, such that the string contact point for any string can be adjusted by turning of the appropriate screw.
Claim 5
Dependent Claim
29 words
The adjustable bridge of claim 1 wherein the upper surface of the panel has tracks running in the direction of the strings, for guiding movement of the sliding members.
Claim 6
Dependent Claim
45 words
The adjustable bridge of claim 1 wherein the sliding members have laterally extending projections on their upper surfaces, and wherein each string contacting member has a laterally extending slot, such that the string contacting members can be slid on the projections in either lateral direction.
Claim 7
Dependent Claim
36 words
The adjustable bridge of claim 5 wherein the means for arresting movement of each string contacting member comprises a set screw running through the lower portion thereof into contact with the projection of the sliding member.
Claim 8
Dependent Claim
23 words
The adjustable bridge of claim 1 wherein the upper surface of each string contacting member has a groove in which the string rides.
References Cited (Backward Citations)
US2918837A
Cited
US2972923A
Cited
US3237502A
Cited
US3429214A
Cited
US4160401A
Cited
US4135426A
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 |