Abstract: An electro-kinetic electro-static air conditioner includes a self-contained ion generator that provides electro-kinetically moved air with ions and safe amounts of ozone. The conditioner may be sized to condition air in a closet, or may include an illumination source and be sized to be attached to an AC wall outlet to provide a night light function as well as a conditioning function. The ion generator includes a high voltage pulse generator whose output pulses are coupled between first and second electrode arrays. Preferably the first array comprises one or more pin-like electrodes and the second array comprises one or more washer-like electrodes. Preferably a ratio between effective area of an electrode in the second array compared to effective area of an electrode in the first array exceeds about 15:1 and preferably is about 20:1. An electric field produced by the high voltage pulses between the arrays produces an electrostatic flow of ionized air containing safe amounts of ozone.

Abstract: A plug in commutator has a hub body (1) of nominally cylindrical cross section. Ribs (4) are formed on the circumferential periphery of the hub body (1) each rib extends longitudinally and is equiangularly spaced to define grooves (5). The ribs are of cylindrical section and so form substantially hour glass sectioned grooves (4). Each groove (4) accommodates a portion of a conductive segment (2) which has opposing radially extending surfaces oversized and shaped corresponding to the shape of the adjacent groove surfaces. At least a part (11) of the oversized portion is of swallow tailed shape to be resiliently deformable and is sized to leave a small gap 5' between the bottom of the groove and the bottom of the segment (2). The commutator is assembled by slotting a preformed segment (2) one into each groove (5). The resiliently deformable part acts to prevent displacement of the segment (2) and to relieve stresses imposed on the hub body (1).

Abstract: An axial gap rotary electric machine in which the conduction path design for disc-shaped armatures is specifically matched to the configuration of the axial magnetic field. The design achieves an axial gap rotary electric machine which is light in weight and capable of high power density per unit weight. The design can be used as an electric generator or an electric motor.