Abstract: An indoor walking workout facility has multiple pathways traversing several rooms, with elevated passageways accessed by elevated paths. The path sections are movable and re-configurable. Several locations along the paths are equipped with scenery, scenic images, sounds, climates and smells that complement a theme for the particular location, such as a mountain walk. The scenic images are displayed on available surfaces, such as walls and ceilings, in a manner tending to surround the walker. Intertwined with the thematic locations are bridges, tunnels, steps, inclines, rope ladders, simulated rock and hill climbs, and the like, that provide varying levels of exertion. Walker care stations are interspersed along the paths for rest and determining blood pressure, heart rate, temperature, calories burned, miles walked, and other information related to the walking activity.

Abstract: An improved engine construction having a reciprocating piston attached to a rotating crankshaft contains, proximate the piston head, a permanent magnet. A cylinder, confining the piston, has a head with an electromagnet located therein. A timed switching system reverses the polarity of the electromagnet, thus alternately attracting and repelling the piston and driving the attached rotating crankshaft.