Low Impedance Dual Coil Bifilar Magnetic Pickup

• US 20130327202A1
• Filed: 10/28/2011
• Published: 12/12/2013
• Est. Priority Date: 10/28/2010
• Status: Active Grant

• Current Assignee: Vertex Pharmaceuticals Incorporated
• Original Assignee: Gibson Guitar Corporation (Gibson Brands, Inc.)
• Inventors: Mills, Steven E.
• Granted Patent: US 9,524,710 B2
• Time in Patent Office: Days
• US Class Current: 84/726
• CPC Class Codes: G10H 2220/515 Staggered, i.e. two coils side by side
• CPC Class Codes: G10H 3/18 using a string, e.g. electric guitar mechanical features G10D1/085
• CPC Class Codes: G10H 3/181 Details of pick-up assemblies
• CPC Class Codes: G10H 3/182 using two or more pick-up means for each string

Abstract

A bifilar pickup for an electrical stringed musical instrument is provided. The bifilar pickup comprises a dual coil wherein at least one coil is formed with two closely spaced bifilar parallel wound wires. A guitar in combination with the pickup unit is additionally provided.

Claims

1. A pickup for a stringed electrical musical instrument comprising:

a permanent magnet; and

at least two coils associated with the magnet, wherein at least one of the two coils is wound with at least two wires, further wherein the at least two wires are wound in a parallel manner with coaxial turns, and yet further wherein the at least two wires are electrically isolated from each other in the coaxial turns.

2. The pickup of claim 1, further comprising two oppositely polarized permanent magnets.

3. The pickup of claim 1 wherein the two oppositely polarized permanent magnets are Alinco 5 magnets.

4. The pickup of claim 1, further comprising two bobbins, wherein the two bobbins are associated with the at least one magnet, further wherein each coil is wound around one of the two bobbins.

5. The pickup of claim 1 wherein the at least two wires are wound about 4000 times.

6. The pickup of claim 1 wherein the at least two wires are insulated copper AWC 44.

7. The pickup of claim 1, wherein the at least two wires are electrically connected.

8. The pickup of claim 1, wherein the at least two coils are electrically connected.

9. The pickup of claim 8, wherein the at least two electrically connected coils are connected in phase parallel, in phase series, out of phase parallel, or out of phase series.

10. A stringed electrical musical instrument comprising:

a guitar; and

a pickup mounted on the guitar, wherein the pickup comprises a permanent magnet; and

at least two coils associated with the magnet, wherein at least one coil is wound with at least two wires, further wherein the at least two wires are wound in a parallel manner with coaxial turns, and yet further wherein the at least two wires are electrically connected at the ends.

11. The stringed electrical musical instrument of claim 10 further comprising two oppositely polarized magnets.

12. The stringed electrical musical instrument of claim 10 wherein the at least two coils are attached to a single base.

13. The stringed electrical musical instrument of claim 10 wherein the at least two wires are wound about 4000 times.

14. The stringed electrical musical instrument of claim 10 wherein the at least two wires are insulated copper AWC 44.

15. The stringed electrical musical instrument of claim 10, wherein the at least two wires are electrically connected.

16. The stringed electrical musical instrument of claim 10, wherein the at least two coils are electrically connected.

17. The stringed electrical musical instrument of claim 16, wherein the at least two electrically connected coils are connected in phase parallel, in phase series, out of phase parallel, or out of phase series.

18. The stringed electrical musical instrument of claim 11, wherein the at least two wires are electrically connected

19. The stringed electrical musical instrument of claim 12, wherein the at least two wires are electrically connected

20. The stringed electrical musical instrument of claim 13, wherein the at least two coils are electrically connected