Abstract: An electric motor that includes a housing, a rotatable axle, a first field armature, which is disposed substantially around the axle and secured to the axle, and which includes a plurality of first field magnets spaced around the first field armature, a second field armature, which is disposed substantially around the first field armature and secured to the axle, and which includes a plurality of second field magnets spaced around the second field armature, an electromagnetic member, which is disposed between the first field armature and secured to the housing. The electromagnetic member includes a plurality of electromagnets spaced around the electromagnetic member, wherein each electromagnet includes a winding that is electrically coupled to an appropriate current source, wherein each winding is capable of being sequentially electrically coupled to a current source, such that an appropriate current may be sequentially provided to each winding.

Abstract: The invention consists in an immersible solar heat collecting means capable of being laid at the bottom of a pool where it can be walked upon. The substantially laminar portions of the collector each includes a surface of higher light absorbence than the other side thereof so that by folding or otherwise overlapping and rearranging the various portions a different number of higher light absorbence surfaces can be presented to the sun to heat the water at any particular time. Such an apparatus makes possible the controlled solar heating of a pool.