Abstract: A propeller blade tip path plane-inclining device which is provided with a fuselage, a propeller including a center piece rotating unitary with a rotation shaft in association therewith and a plurality of blades extending substantially horizontally from the center piece and differing the variation in pitch during the rotation thereof from one another, a motor for driving the propeller for rotation, a position detector for detecting the position of the propeller in the propeller rotation plane, and a control device for controlling the motor in accordance with an output signal of the position detector.

Abstract: A yoke adapted for use with a wide deflection angle picture tube used in a television receiver set is disclosed, in which a horizontal yoke is of saddle-shape and a fringe thereof is of non-circular shape so that a raster scanned on the picture tube shows no vertical pincushion distortion.