US4583440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capo for guitar and banjo
Assignee: Individual
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Filing: 1985-02-08
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Granted: 1986-04-22
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Expires: 2005-02-08
Abstract
Abstract A capo for a guitar and five string banjo that is selectively mounted along the length of the guitar or five string banjo neck for retaining all of the strings of the guitar or four of the five strings of a five string banjo in abutting relation to the frets of the fretboard for the purpose of uniformly changing the pitch of the strings without the need for retuning the strings. The capo consists of a clamp frame that mounts a rubber strip for clamping against the strings and two integral handles that are grasped using either hand for operation and a coiled tension spring to provide the clamping force.
Inventors
- 👤 Charles B. Powell, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 00:48
CPC Classifications
G; G10; G10D; G10D3/00; G10D3/053
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
175 words
A capo mountable on the neck of a stringed musical instrument, comprising: clamp means including an upper member with an upwardly projecting portion, a horizontal string engaging portion for pressing selected strings of the musical instrument against at least one fret of the musical instrument, and a downwardly projecting leg which together with the horizontal string engaging portion defines a downwardly facing recess for receiving the neck of the musical instrument; a lower member having a clamping end and an opposite handle end which is rotatably joined to the downwardly projecting leg at a pivot point intermediate the clamping end and handle end, the handle end extending upwardly from the pivot point and being angled away from the upwardly projecting portion of the upper member, the handle end of the lower member and the upwardly projecting portion of the upper member together forming an elevated actuating mechanism for moving the clamp means between a neck clamping position and a non-clamping position; and biasing means for normally urging the clamping means toward the neck clamping position.
Claim 2
Dependent Claim
175 words
A capo mountable on the neck of a stringed musical instrument, comprising: clamp means including an upper member with an upwardly projecting portion, a horizontal string engaging portion for pressing selected strings of the musical instrument against at least one fret of the musical instrument, and a downwardly projecting leg which together with the horizontal string engaging portion defines a downwardly facing recess for receiving the neck of the musical instrument; a lower member having a clamping end and an opposite handle end which is rotatably joined to the downwardly projecting leg at a pivot point intermediate the clamping end and handle end, the handle end extending upwardly from the pivot point and being angled away from the upwardly projecting portion of the upper member, the handle end of the lower member and the upwardly projecting portion of the upper member together forming an elevated actuating mechanism for moving the clamp means between a neck clamping position and a non-clamping position; and biasing means for normally urging the clamping means toward the neck clamping position.
Claim 3
Dependent Claim
33 words
The capo of claim 1, wherein the horizontal string engaging portion has a lower surface which is lined with a resilient strip for contacting selected strings on the neck of the musical instrument.
Claim 4
Dependent Claim
42 words
The capo of claim 1, wherein the biasing means is a coil torsion spring which is mounted within a recess in the downwardly projecting leg and which has a hook end attached to a raised portion of the lower member handle end.
Claim 5
Dependent Claim
53 words
The capo of claim 1, wherein the pivot point at which the lower member is rotatably joined to the downwardly projecting leg is on an outer extent of the downwardly projecting leg, whereby the neck of the musical instrument can be received within the downwardly facing recess without laterally deflecting the strings thereof.
Claim 6
Dependent Claim
221 words
A capo mountable on the neck of a stringed musical instrument, comprising: clamp means including an upper member with an upwardly projecting portion, a horizontal string engaging portion for pressing selected strings of the musical instrument against at least one fret of the musical instrument, and a downwardly projecting leg which together with the horizontal string engaging portion defines a downwardly facing recess for receiving the neck of the musical instrument; a lower member having a clamping end and an opposite handle end which is rotatably joined to the downwardly projecting leg at a pivot point intermediate the clamping end and handle end, the handle end extending upwardly from the pivot point and being angled away from the upwardly projecting portion of the upper member, the handle end of the lower member and the upwardly projecting portion of the upper member together forming an elevated actuating mechanism for moving the clamp means between a neck clamping position and a non-clamping position; biasing means for normally urging the clamping means toward the neck clamping position; and wherein the horizontal string engaging portion of the upper member has a stepped underside which forms a second, deeper recess for a string of the instrument which is not pressed against the fret when the clamp means is in place and in the neck clamping position.
Claim 7
Dependent Claim
221 words
A capo mountable on the neck of a stringed musical instrument, comprising: clamp means including an upper member with an upwardly projecting portion, a horizontal string engaging portion for pressing selected strings of the musical instrument against at least one fret of the musical instrument, and a downwardly projecting leg which together with the horizontal string engaging portion defines a downwardly facing recess for receiving the neck of the musical instrument; a lower member having a clamping end and an opposite handle end which is rotatably joined to the downwardly projecting leg at a pivot point intermediate the clamping end and handle end, the handle end extending upwardly from the pivot point and being angled away from the upwardly projecting portion of the upper member, the handle end of the lower member and the upwardly projecting portion of the upper member together forming an elevated actuating mechanism for moving the clamp means between a neck clamping position and a non-clamping position; biasing means for normally urging the clamping means toward the neck clamping position; and wherein the horizontal string engaging portion of the upper member has a stepped underside which forms a second, deeper recess for a string of the instrument which is not pressed against the fret when the clamp means is in place and in the neck clamping position.
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) | 1989-04-21 | 1989-10-21 | 1990-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-21 | 1993-10-21 | 1994-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-21 | 1997-10-21 | 1998-04-22 | $7700.00 | Window Closed / Lapsed |