US4941384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guitar
Assignee: Individual
•
Filing: 1989-03-08
•
Granted: 1990-07-17
•
Expires: 2009-03-08
Abstract
Abstract The invention relates to a guitar comprising a releasable device for clamping the strings to the nut, the ball ends being secured to a base part movable around a knife edge and disposed in a recess in the body and comprising an adjustable prism and adjustable spring riders and tension springs engaging the base part. The clamping device comprises clamping jacks (2), an adjustable end pressure plate (3) with a set screw (7) and an eccentric pressure plate (4) movable by an eccentric lever (8) and between which the strings are clamped. Also, the base part (20) has string riders (23), spacer plates (26), through bores (31) for the strings and an adjustable spring-retaining block (21) at which tension springs (39) engage, the ball ends being disposed between the through bores and the spring-retaining block. Also, the other spring ends are secured to a spring-holding bracket (35) connected to a tightening nut (40) by a spring-adjusting screw (37) with interposition of a tension casing (34) (FIG. 9).
Inventors
- 👤 Harald Jager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:21
CPC Classifications
G; G10; G10D; G10D1/00; G10D1/04; G10D1/05; G10D1/08; G10D3/00; G10D3/12
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
171 words
A guitar comprising a releasable device for clamping the strings to the nut, the ball ends being secured to a base part movable around a knife edge and disposed in a recess in the body and comprising adjustable string riders and tension springs engaging the base part, characterised in that (a) the clamping device comprises clamping jacks (2), an adjustable end pressure plate (3) with a set screw (7) and an eccentric pressure plate (4) movable by an eccentric lever (8) and between which the strings are clamped; (b) the base part (20) has string riders (23), spacer plates (26), through bores (31) for the strings and an adjustable spring-retaining block (21) at which tension springs (39) engage, the ball ends being disposed between the through bores and the spring-retaining block, and a prim is provided and is adjustable in position; (c) the other spring ends are secured to a spring-holding bracket (35) connected to a tightening nut (40) by a tension-adjusting screw (37) with interposition of a tension casing (34).
Claim 2
Dependent Claim
171 words
A guitar comprising a releasable device for clamping the strings to the nut, the ball ends being secured to a base part movable around a knife edge and disposed in a recess in the body and comprising adjustable string riders and tension springs engaging the base part, characterised in that (a) the clamping device comprises clamping jacks (2), an adjustable end pressure plate (3) with a set screw (7) and an eccentric pressure plate (4) movable by an eccentric lever (8) and between which the strings are clamped; (b) the base part (20) has string riders (23), spacer plates (26), through bores (31) for the strings and an adjustable spring-retaining block (21) at which tension springs (39) engage, the ball ends being disposed between the through bores and the spring-retaining block, and a prim is provided and is adjustable in position; (c) the other spring ends are secured to a spring-holding bracket (35) connected to a tightening nut (40) by a tension-adjusting screw (37) with interposition of a tension casing (34).
Claim 3
Dependent Claim
65 words
A guitar according to claim 1, characterised in that the spacing between the clamping jacks (2) corresponds to the differences in thickness in the strings runing between them, their sides facing the strings are adapted to the conical shape of the strings, and they are firmaly screwed to the baseplate (1) with the distance between the string tangents being the same between all the strings.
Claim 4
Dependent Claim
32 words
A guitar according to claim 2, characterised in that a calibrating line (43, 44) is disposed on the underside of the spring-retaining block (21) and the underside of the body (103) respectively.
Claim 5
Dependent Claim
26 words
A guitar according to claim 1, characterised in that a tightening eccentric (5) is rotatably mounted on a receiving cylinder (6) anchored in the baseplate (1).
Claim 6
Dependent Claim
23 words
A guitar according to claim 3, characterised in that a friction-reducing washer is provided between the tightening eccentric (5) and the baseplate (1).
Claim 7
Dependent Claim
24 words
A guitar according to claim 3, characterised in that the tightening eccentric is secured to the receiving cylinder (6) by a knurled-head screw (12).
Claim 8
Dependent Claim
34 words
A guitar according to claim 1, characterised in that the string riders (23) are secured to the base part (20) with interposition of spacer plates (26) and tightening cylinders (25) with tightening screws (27).
Claim 9
Dependent Claim
32 words
A guitar according to claim 7, characterised in that two prisms are movable disposed in the base part (20), and a knife edge secured to the body (103) engages in the prisms.
Claim 10
Dependent Claim
34 words
A guitar according to claim 8, characterised in that the prisms are axially movable in a locating bore vertically and are lockable in the required position by respective allen screws in the base part.
Claim 11
Dependent Claim
25 words
A guitar according to claim 7, characterised in that the prisms are secured in the head of screws (24) disposed in the base part (20).
Claim 12
Dependent Claim
33 words
A guitar according to claim 7, characterised in that the spring-retaining block (21) is vertically adjustable on the base part (20) and has setscrews (29) into the tension springs (39) can be hooked.
Claim 13
Dependent Claim
31 words
A guitar according to claim 11, characterised in that the ends of the tension springs (39) remote from the hooks are secured to a spring-holding bracket (35) by shoulder-attachment screws (38).
Claim 14
Dependent Claim
31 words
A guitar according to claim 11, characterised in that the spring-retaining bracket (35) is connected by a spring-tension adjusting screw (37) to a tightening casing 34 secured to the body (103).
Claim 15
Dependent Claim
36 words
A guitar according to claim 13, characterised in that a tightening nut (40) with peripheral blind bores is secured with interposition of a friction-reducing washer (41) to the free end of the spring-tension adjusting screw (37).
Claim 16
Dependent Claim
26 words
A guitar according to claim 13, characterised in that a retaining pin (36) holds the tightening casing (34) in position relative to the spring-holding bracket (35).
Claim 17
Dependent Claim
21 words
A guitar according to claim 6, characterised in that the spring-retaining block (21) has through bores (30) for the ball ends.
References Cited (Backward Citations)
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Cited
US4475432A
Cited
US4512232A
Cited
US4724737A
Cited
US4632004A
Cited
US4656916A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-16 | 1994-01-15 | 1994-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-16 | 1998-01-15 | 1998-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-16 | 2002-01-15 | 2002-07-17 | $7700.00 | Window Closed / Lapsed |