Abstract: A switching apparatus includes: a body including: a sidewall that extends from a first end to a second end, the sidewall defining an interior space; and a plurality of electrically insulating sheds that extend radially outward from an exterior surface of the sidewall; a circuit interrupter in the interior space of the body; a first terminal electrically connected to the circuit interrupter; and a second terminal electrically connected to the circuit interrupter. The switching apparatus is configured to be mechanically connected to at least two different types of mounting structures.

Abstract: Instrument having automatic fine-tuning of pitch with no moving parts. A flute is described as one embodiment. In flutes of the prior art the various notes are often slightly off pitch because of compromises in the locations of the holes, and musicians must compensate. In this invention a built-in electronic sensor picks up sound as a musician plays, and a circuit identifies the intended note. The played note is compared with, an accurate reference pitch and the frequency difference is used to generate a signal in phase quadrature with the played note. The quadrature signal is added to correct the pitch. The added vibration energizes a tuning actuator that is located in place of a conventional tuning plug of the flute. The tuning actuator pulls the pitch automatically to achieve a precisely correct pitch as each note is played. Also, a player can intentionally deflect the pitch.

Abstract: Instrument having automatic fine-tuning of pitch with no moving parts. In prior flutes the notes are slightly off pitch because of compromises in locations of the holes, and musicians must compensate. In this invention a sensor picks up sound and a circuit identifies the played note. The played note is compared with a frequency reference, in a closed loop. The frequency difference generates an additional signal in phase quadrature relationship with the played note. A tuning actuator at one end adds the quadrature signal to correct the pitch by altering its phase. The closed loop causes the tone to have precisely correct pitch. A feature permits a player to intentionally deflect the pitch for artistic expression.

Abstract: A method and machine for teaching the reading of golf putting greens wherein the distance to the cup is calculated and a corresponding force is selected and perfectly applied to a golf ball by the putting machine to verify the calculation. The steps may be repeated until the projected golf ball enters the cup. To compensate for the lie of the putting surface, an optical system using mirrors is mounted to a putter drive assembly to project the golf ball at an angle with respect to the line of sight to the cup. The putter drive assembly includes a plurality of pairs of holes in which two pins are placed to define the plane at which the golfer should strike the ball in order to duplicate the stroke of the putting machine.