Abstract: A low speed water driven turbine having a housing to be erected vertically in a water course, a water intake and a water outlet, a drive shaft rotatably mounted along a central vertical axis of the housing, a shaft sleeve non-rotatably mounted in the housing and supporting and enclosing the shaft, a guide casing of generally bell-like shape and defining a lower edge, the casing being connected to the shaft sleeve within the housing and extending outwardly from the sleeve to define a reduced cross-sectional area within the housing in the region of the guide casing, a turbine blade mounting hub driveably mounted at the lower end of the shaft, a plurality of turbine blades mounted around the hub and extending outwardly therefrom the turbine blades being mounted at angles with respect to the vertical axis of the housing, and being located to receive water from the reduced cross-sectional portion of the casing, so that water passing down through the housing will flow onto and past the turbine blades and cause rota

Abstract: A rotary engine having an outer rotor on outer rotor bearings and an inner rotor within the outer rotor mounted on inner rotor bearings, the outer rotor axis being offset relative to the inner rotor axis, a housing enclosing the inner and outer rotors, generally radial arms formed on the inner rotor, and recesses defined between them, inwardly projecting lobes defined by the outer rotor, spaced apart, and defining outer rotor chambers, the inner rotor arms extending into the outer rotor chambers, at least around a portion of the rotational path of the rotors, a fresh air intake port for inducting fresh air into the outer rotor chambers in sequence at a predetermined point in the rotational path of the outer rotor, a fuel/air intake port for inducting burning fuel/air into the outer rotor chambers in sequence at a second predetermined point, and an exhaust port for exhausting gases from the outer rotor chambers in sequence at a third predetermined point.

Abstract: A rotary pump (10) of the type having inner and outer rotary components (32, 30) which rotate in the same direction at the same speed, the inner rotary component (32) being located within the outer rotary component (30), and in which the outer rotary component (30) has an annular wall (44), abutments (46) and recesses (50) between the abutments (46), and contact bodies (48) formed on the abutments (46) and being shaped as a major segment of an ellipse; and in which the inner rotary component (32) has an inner body (60) with abutments (64) located within respective outer recesses (50), and receiving the outer wall abutments (46) and contact bodies (48), the outer component (30) having a rotary axis, located along its central axis, a drive shaft (36) connected to the inner body (32) and located along its central axis, the outer and inner axes being parallel to and spaced from one another so that the inner component (32) is located offset from the center of the outer component (30), the inner body recess surface