Abstract: A percussive device for a stringed instrument includes a support structure, an attachment component that attaches the support structure to the stringed instrument, one or more hammers attached to arms rotatably coupled to the support structure and one or more actuators rotatably coupled to the support structure. User activation of the one of the actuators causes a corresponding one of the hammers to make contact with a string of the stringed instrument. A rotational force device applies a rotational force to at least one of the hammer arms or actuators. The rotational force device includes a torsion or helical compression spring. The applied rotational force causes the hammer to be positioned not in contact with the string of the stringed instrument. The applied rotational force is overcome when an applicable force has been applied to the corresponding actuator by a user, thereby causing the at least one hammer to be positioned in contact with the corresponding string of the stringed instrument.

Abstract: A percussive device for a stringed instrument includes a support structure, an attachment component that attaches the support structure to the stringed instrument, one or more hammers attached to arms rotatably coupled to the support structure and one or more actuators rotatably coupled to the support structure. User activation of the one of the actuators causes a corresponding one of the hammers to make contact with a string of the stringed instrument. A rotational force device applies a rotational force to at least one of the hammer arms or actuators. The rotational force device includes a torsion or helical compression spring. The applied rotational force causes the hammer to be positioned not in contact with the string of the stringed instrument. The applied rotational force is overcome when an applicable force has been applied to the corresponding actuator by a user, thereby causing the at least one hammer to be positioned in contact with the corresponding string of the stringed instrument.

Abstract: A percussive device for a stringed instrument includes a support structure, an attachment component that attaches the support structure to the stringed instrument, one or more hammers attached to arms rotatably coupled to the support structure and one or more actuators. User activation of the actuators causes a corresponding one of the hammers to make contact with a string of the stringed instrument resulting in a rotational force applied to at least one of the hammer arms or actuators. The applied rotational force causes the hammer to be positioned out of contact with the string of the stringed instrument. The applied rotational force is overcome when an applicable force has been applied to the corresponding actuator by a user, thereby causing the hammer to contact a corresponding string of the stringed instrument.

Abstract: A percussive device for a stringed instrument. The percussive device includes a support structure, an attachment component that attaches the support structure to the stringed instrument, one or more hammers attached to arms rotatably coupled to the support structure and one or more actuators rotatably coupled to the support structure. User activation of the one of the actuators causes a corresponding one of the hammers to make contact with a string of the stringed instrument. A rotational force device applies a rotational force to at least one of the hammer arms or actuators. The rotational force device includes a torsion or helical compression spring. The applied rotational force causes the hammer to be positioned not in contact with the string of the stringed instrument.