Bobbin and pickup for stringed musical instruments

• US 20050150365A1
• Filed: 01/06/2005
• Published: 07/14/2005
• Est. Priority Date: 01/14/2004
• Status: Active Grant

• Current Assignee: Paul Reed Smith Guitars, Limited Partnership
• Original Assignee: Paul Reed Smith Guitars, Limited Partnership
• Inventors: Smith, Paul Reed, Krozack, Edwin
• Granted Patent: US 7,288,713 B2
• Time in Patent Office: Days
• US Class Current: 84/726
• CPC Class Codes: G10H 3/181 Details of pick-up assemblies

Abstract

A bobbin for a pickup including a base and a top or cover spaced and connected by a post structure integral thereto. The post structure has one or more cavities for receiving one or more pole pieces. The post structure includes a plurality of lateral windows so that the one or more pole pieces in the one or more cavities would be immediately adjacent windings of one or more coils to be wound on the bobbin.

Claims

1. A bobbin for a pickup for a stringed musical instrument, the bobbin comprising:

a base and a top spaced and connected by a post structure integral thereto;

the post structure having one or more cavities for receiving one or more pole pieces;

the post structure including a plurality of lateral windows so that the one or more pole pieces in the one or more cavities would be immediately adjacent windings of one or more coils to be wound on the bobbin.

2. The bobbin of claim 1, wherein the post structure is a plurality of struts spaced about the periphery of the one or more cavities to form the lateral windows there between.

3. The bobbin of claim 2, wherein the base includes an opening to the one or more cavities, and the struts are interior a projected volume defined by the base opening.

4. The bobbin of claim 1, wherein the base, top and post structure are a single molded piece.

5. The bobbin of claim 1, wherein the base includes at least two recesses on a first lateral edge and a terminal in the base for each recess, each terminal having a first portion extending into the recess and a second portion extending from a first outer surface of the base transverse to the first portion.

6. The bobbin of claim 5, wherein the first outer surface of the base is recessed relative to a second outer surface, and the recess in the second surface is for receiving a plate to be secured to the bobbin by the second portions of the terminals.

7. The bobbin of claim 5, including a third recess on a lateral edge of the base opposite the first lateral edge and extending substantially a length of the one or more cavities, and the third recess is for receiving a magnet for the pole pieces.

8. A pickup including a bobbin of claim 5;

and wire wound around the post structure and having ends connected to respective first portions of the terminals.

9. The bobbin of claim 1, including a recess on a lateral edge of the base and extending substantially a length of the one or more cavities, and the recess is for receiving a magnet for the pole pieces.

10. The bobbin of claim 9, wherein the base includes one or more openings to the one or more cavities, and the recess extends to the one or more openings.

11. A pickup including a bobbin of claim 10;

one or more pole pieces in the one or more cavities;

wire wound around the post structure and immediately adjacent the pole pieces; and

a magnet in the recess immediately adjacent the one or more pole pieces.

12. A pickup including a bobbin of claim 1;

one or more pole pieces in the one or more cavities; and

wire wound around the post structure and immediately adjacent the pole pieces.

13. The pickup of claim 12, including a pole piece and a magnet in each cavity.

14. A bobbin for a pickup for a stringed musical instrument, the bobbin comprising:

a base and a top spaced and connected by a post structure;

the post structure having one or more cavities for receiving one or more pole pieces;

at least two recesses on a first lateral edge of the base; and

a terminal in the base for each recess, each terminal having a first portion extending into the recess and a second portion extending from a first outer surface of the base transverse to the first portion.

15. The bobbin of claim 14, wherein the first outer surface of the base is recessed relative to a second outer surface, and the recess in the second surface is for receiving a plate to be secured to the bobbin by the second portions of the terminals.

16. A pickup including a bobbin of claim 15;

wire wound around the post structure and having ends connected to respective first portions of the terminals; and

a plate in the second surface recess and being a printed circuit board with an electrical connector electrically connected to the second portions of the terminals.

17. A pickup including a bobbin of claim 14;

wire wound around the post structure and having ends connected to respective first portions of the terminals; and

a printed circuit board secured to the bobbin by the second portions of the terminals and having an electrical connector electrically connected to the second portions of the terminals.

18. The bobbin of claim 14, wherein the base includes at least three recesses on the first lateral edge, each with a terminal.

19. The bobbin of claim 14, including a third recess on a lateral edge of the base opposite the first lateral edge and extending substantially a length of the one or more cavities, and the third recess is for receiving a magnet for the one or more pole pieces.

20. The bobbin of claim 19, wherein the base includes one or more openings to the one or more cavities, and the third recess extends to the one or more openings.

21. A pickup including a bobbin of claim 20;

one or more pole pieces in the one or more cavities;

wire wound around the post structure; and

a magnet in the third recess immediately adjacent the one or more pole pieces.

22. A pickup including a bobbin of claim 14;

and wire wound around the post structure and having ends connected to respective first portions of the terminals.

23. The pickup of claim 22, including a pole piece and a magnet in each cavity.

24. A bobbin for a pickup for a stringed musical instrument, the bobbin comprising:

a base and a top spaced and connected by a post structure;

the post structure having one or more cavities for receiving one or more pole pieces;

at least two recesses on a first lateral edge of the base;

a terminal in the base for each recess; and

a third recess on a lateral edge of the base opposite the first lateral edge and extending substantially a length of the one or more cavities, the third recess is for receiving a magnet for the one or more pole pieces.

25. The bobbin of claim 24, wherein the base includes one or more openings to the one or more cavities, and the third recess extends to the one or more openings.

26. A pickup including a bobbin of claim 25;

one or more pole pieces in the one or more cavities;

wire wound around the post structure and having ends connected to respective terminals; and

a magnet in the third recess immediately adjacent the one or more pole pieces.

27. A pickup including a bobbin of claim 24;

one or more pole pieces in the one or more cavities;

wire wound around the post structure and having ends connected to respective terminals;

a magnet in the third recess; and

a printed circuit board secured to the bobbin by the terminals and having an electrical connector electrically connected to the terminals.

28. The pickup of claim 27, wherein the printed circuit board covers the pole pieces and the magnet.

29. A pickup including a pair of bobbins of claim 24;

each bobbin including one or more pole pieces in the one or more cavities and wire wound around the post structure and having ends connected to respective terminals;

a common magnet in lateral adjacent third recesses; and

a printed circuit board secured to the bobbins by the terminals and having an electrical connector electrically connected to the terminals.

30. The pickup of claim 29, wherein the printed circuit board covers the pole pieces and the magnet.

31. The pickup of claim 29, wherein the bobbins each include a recess in a first face of the base, and the printed circuit board lies in the face recesses.

32. A pickup for a stringed musical instrument, the pickup comprising:

a bobbin having a base and a top spaced and connected by a post structure;

at least one pole piece in at least one cavity in the post structure;

at least two terminals in the base and having a first portion extending from a face of the base;

a coil having a wire wound around the post structure and having ends connected to respective terminals;

a magnet in the bobbin adjacent the at least one pole piece; and

a printed circuit board secured to the base by the terminals and having an electrical connector electrically connected to the terminals.

33. The pickup of claim 32, wherein the printed circuit board covers the at least one pole piece and the magnet.

34. The pickup of claim 32, wherein the base each includes a recess in the first face of and the printed circuit board lies in the face recesses.

35. A dual pickup for a stringed musical instrument, the pickup comprising:

two bobbins each having a base and a top spaced and connected by a post structure, at least one pole piece in at least one cavity in the post structure, at least two terminals in the base and having a first portion extending from a first face of the base, a coil having a wire wound around the post structure and having ends connected to respective terminals, and a magnet in the bobbin adjacent the at least one pole piece; and

a printed circuit board secured to the bases by the terminals and having an electrical connector electrically connected to the terminals.

36. The pickup of claim 35, wherein the printed circuit board covers the pole pieces and the magnets.

37. The pickup of claim 35, wherein the base each includes a recess in the first face, and the printed circuit board lies in the face recesses.

38. The pickup of claim 35, including at least three terminals, and the wire has its ends connected to two of the terminals a portion between the end to a third terminal.

39. The pickup of claim 35, wherein the magnet in each bobbin is a single common magnet bridging the bases and polarizing the pole pieces of opposite polarity.

40. The pickup of claim 35, wherein the connector has a separate pin for each terminal.

41. The pickup of claim 35, wherein the printed circuit board includes a shield layer on a face opposite a face on which the connector is mounted, and the shield layer is electrical connected to the connector.