Transducer for a stringed musical instrument
OwnerChristopher Ian Kinmaninventor
Life of this patent
Estimating the term…
Abstract
A transducer for a stringed instrument comprises a first uppermost coil and a second lowermost coil with the axes of the coils coincident. Permanent magnet pole pieces are arranged in the first coil and metallic non-magnetized pole pieces are arranged in the second coil. Oppositely directed U-shaped shields each having a web and outwardly directed opposed flanges are arranged back to back and receive the coils to shield the coils from each other both magnetically and inductively.
Claims32
A transducer having a first coil, a second coil arranged with its axis coincident with the axis of the first coil and in use spaced below the first coil, a metallic shield made of magnetically permeable material arranged between the coils, the shield having an outwardly directed wall extending over a side of one of the first coil or the second coil for inductively and magnetically decoupling said coils from one another, at least one permanent magnet pole piece associated with the first coil and at least one metallic magnetically permeable pole piece associated with the second coil.
An electric guitar pickup having:
- a lower coil and an upper coil supported coaxially above the lower coil;
- a continuous metallic shield made of magnetically permeable material supported between the upper and lower coils;
- a plurality of permanent magnet pole pieces extending through the core of the upper coil, and
- a plurality of magnetically permeable pole pieces extending through the core of the lower coil.
An electric guitar pickup having:
- a lower coil and an upper coil supported coaxially above the lower coil, the upper and lower coils having a different number of turns;
- a continuous metallic shield made of magnetically permeable material supported between the upper and lower coils;
- a plurality of permanent magnet pole pieces extending through the core of the upper coil, and
- a plurality of magnetically permeable pole pieces extending through the core of the lower coil.
A transducer comprising:
- a first coil having a first axis;
- a second coil having a second axis coincident with said first axis and spaced below the first coil;
- a magnetic shield made of magnetically permeable material arranged between the coils, said shield having at least one outwardly directed wall extending over a side of one of said first coil or said second coil;
- at least one first permanent magnet pole piece associated with said first coil, and
- at least one magnetically permeable pole piece, separate from said first permanent magnet pole piece, associated with said second coil.
A transducer comprising:
- a first coil having a first axis;
- a second coil having a second axis coincident with said first axis and spaced below the first coil and being wound with a different number of turns than the first coil
- a magnetic shield made of magnetically permeable material arranged between the coils, said shield having at least one outwardly directed wall extending over a side of one of said first coil or said second coil;
- at least one first permanent magnet pole piece associated with said first coil, and
- at least one magnetically permeable pole piece, separate from said first permanent magnet pole piece, associated with said second coil.
An electric guitar pickup having a first coil, a second coil arranged with its axis coincident with the axis of the first coil and in use spaced below the first coil, a metallic shielding wall or walls made of magnetically permeable material and arranged between the coils for inductively and magnetically decoupling said coils from one another, at least one permanent magnet pole piece associated with the first coil and at least one metallic magnetically permeable pole piece associated with the second coil.
An electric guitar pickup having:
- a lower coil and an upper coil supported coaxially above the lower coil;
- a magnet pole piece positioned in the upper coil, and
- a magnetically permeable pole piece positioned in the lower coil.
An electric guitar pickup having:
- a first coil;
- a second coil;
- a magnet pole piece positioned in the first coil, and
- a magnetically permeable pole piece positioned in the second coil
- wherein said first coil and said second coil have a different number of turns.
An electric guitar pickup having:
- a first coil;
- a second coil;
- a magnet pole piece positioned in the first coil, and
- a magnetically permeable pole piece positioned in the second coil
- wherein said first coil and said second coil have a different gauge wire.
Dependencies are inferred from the claim text.