US3668295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic audio pickup for stringed musical instruments, with volume control means, and suitable for use with any type strings
Assignee: Individual
•
Filing: 1971-03-31
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Granted: 1972-06-06
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Expires: 1991-03-31
Abstract
Abstract Basically, in a stringed musical instrument comprising a resonator, top, or belly with strings tensioned between tuning means, string supporting means, and string anchoring means; the improvement comprising an electromagnetic audio pickup suitable for use with any type strings. Said pickup comprises a magnet secured to the said resonator, top, or belly, and a hollow core coil which is magnetically linked to the said magnet so that the magnetic fields aid, and the said coil is mounted to the instrument back or equivalent thereof in a fixed or adjustable relationship to the magnet secured to the resonator, top, or belly.
Inventors
- 👤 Paul Daniel Broussard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:23
CPC Classifications
G; G10; G10H; G10H3/00; G10H3/12; G10H3/14; G10H3/18; G10H3/181
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
81 words
In a stringed musical instrument having a resonator, top or belly with strings tensioned between tuning means, a string supporting means, and a string anchoring means; the improvement comprising: An electromagnetic audio pickup including a magnet secured to the resonator, top or belly, and a hollow core coil magnetically linked to said magnet, said coil is adjustably mounted to the instrument back by a couple of screws which thread into a coil mounting plate upon which the said coil is mounted.
Claim 2
Dependent Claim
81 words
In a stringed musical instrument having a resonator, top or belly with strings tensioned between tuning means, a string supporting means, and a string anchoring means; the improvement comprising: An electromagnetic audio pickup including a magnet secured to the resonator, top or belly, and a hollow core coil magnetically linked to said magnet, said coil is adjustably mounted to the instrument back by a couple of screws which thread into a coil mounting plate upon which the said coil is mounted.
Claim 3
Dependent Claim
28 words
The invention specified in claim 1 wherein the said adjusting screws pass through suitable resilient means positioned between the said coil mounting plate and the said instrument back.
Claim 4
Dependent Claim
56 words
The invention specified in claim 1 wherein one end of the coil is connected to ground and to one terminal of a volume control means, whereas the other end of said coil is connected to the sliding terminal of the said volume control means and one terminal of a jack, which has its other terminal grounded.
Claim 5
Dependent Claim
88 words
In a stringed musical instrument having a resonator, top or belly with strings tensioned between tuning means, a string supporting means, and a string anchoring means; the improvement comprising: An electromagnetic audio pickup system including a pair of spaced magnets secured to a resonator, top or belly which are magnetically linked to a pair of spaced hollow core coils which are adjustably mounted to the said inStrument back, by a couple of screws which thread into a coil mounting plate upon which the said two coils are secured.
Claim 6
Dependent Claim
88 words
In a stringed musical instrument having a resonator, top or belly with strings tensioned between tuning means, a string supporting means, and a string anchoring means; the improvement comprising: An electromagnetic audio pickup system including a pair of spaced magnets secured to a resonator, top or belly which are magnetically linked to a pair of spaced hollow core coils which are adjustably mounted to the said inStrument back, by a couple of screws which thread into a coil mounting plate upon which the said two coils are secured.
Claim 7
Dependent Claim
28 words
The invention specified in claim 4 wherein the said adjusting screws pass through suitable resilient means positioned between the said coil mounting plate and the said instrument back.
Claim 8
Dependent Claim
94 words
The invention specified in claim 4 wherein one end of a first coil is grounded and connected to one terminal of a first volume control means, whereas the other end of said first coil is connected to one end of a second coil, the sliding terminal of the first volume control means, and one terminal of a second volume control means; and the other end of the second coil is connected to the sliding terminal of the second volume control means and to one terminal of a jack, which has its other terminal grounded.
Claim 9
Dependent Claim
103 words
The invention as specified in claim 4 wherein one end of the first coil is grounded and connected to one terminal of the first volume control means, while the other end of the first coil is connected to the sliding terminal of the first volume control means which is thereof coupled to a first amplifier; and one end of the second coil is grounded and connected to one terminal of the second volume control means, while the other end of the second coil is connected to the sliding terminal of the second volume control means which is thereof coupled to a second amplifier.
Claim 10
Dependent Claim
21 words
The invention specified in claim 4 wherein the pair of spaced hollow core coils are mounted upon a coil mounting plate.
Claim 11
Dependent Claim
35 words
The invention specified in claim 4 wherein the pair of spaced magnets and counterpart hollow core coils are mounted within the body of the instrument in a relatively perpendicular axis to the instrument''s string axis.
Claim 12
Dependent Claim
35 words
The invention specified in claim 4 wherein the pair of spaced magnets and counterpart hollow core coils are mounted within the body of the instrument in a relatively parallel axis to the instrument''s string axis.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |