Abstract: A composite gradient index and curved surface anamorphic lens has a gradient index of refraction and at least one curved surface. Combinations of planar and radial gradients with spherical and cylindrical surfaces are described. A corrector for an light source whose beam divergences are different in orthogonal planes using such a lens and a light beam scanning mechanism are disclosed. In the light beam scanning system, a homogeneous toroidal lens is replaced by a toroidal equivalent gradient-index lens, hereafter referred to as a TEGIL. The lens reduces undesirable displacement of the focus light beam from a scan line on a receptor plane and from the receptor plane itself. The TEGIL comprises a body of gradient-index material having cylindrical faces for generating optical power in a first dimension and whose gradient-index generates optical power in an orthogonal dimension.

Abstract: A cardiorespiratory monitoring apparatus having a sensor for detecting cardiac potentials and a detector for detecting amplitude peaks in the cardiac rate signals which are supplied by the sensor. An apparatus is also included which extracts a respiratory rate representative signal from the cardiac rate signal which is supplied by the detector of the amplitude peaks.

Abstract: The invention provides an electrical machine having an inductor and an armature at least one of which has at least two independent winding assemblies. The switching into and out of circuit of each winding assembly is controlled by a processor which receives monitoring parameters of the machine and desired value parameters, thereby controlling in real time the operating characteristics of the machine. The machine may be a wind-driven generator.

Abstract: A tubular stator capable of creating a magnetic field having both linear and rotary components comprises a tubular magnetic frame formed from longitudinal magnetic elements which are angularly spaced. The magnetic elements have teeth which extend radially inwardly. Circular induction coils are disposed between the teeth and undulating coils are disposed longitudinally between the magnetic elements. A magnetic sleeve surrounds the magnetic frame.An electric motor comprises a cylindrical rotor mounted within the tubular stator so as to be rotatable and translatable.

Abstract: An ampholyte is purified by being enclosed in a capillary system forming a convection-free zone, direct current being passed through said zone. The electrolyte contains at least one buffering ion constituent. Electrolyte zones are created on both sides of said convection-free zone. Convection is created in said electrolyte zones to homogenize the electrolyte in said zones. Two equal liquid flows of reverse directions are created between said two homogenized electrolyte zones.

Abstract: An apparatus and method of determining the end point of a chemical reaction producing an optical change in a plurality of samples is disclosed. The invention is particularly suitable for the simultaneous determination of the coagulation time for multiple samples of blood and like materials.