Abstract: The invention is concerned with magnetically driven centrifugal pumps whose rotor forms a unit with an impeller, which is located in a rotary magnetic field. The rotor is mounted to said impeller by a spring loaded clamp.

Abstract: In a spherical pump, having a separation wall separating the wet part from the dry part of the pump, the column for the ball of the spherical bearing is made from the same material as the separation wall and is clamped in a cylindrical protrusion of the separation wall.

Abstract: The spiral housing of a centrifugal pump which forms a unit with an electric motor and consists of two parts flanged together by screws evenly distributed over its circumference. The axis of rotation on the impeller forms a 45 degree angle with the axis of the inlet port and the axis of the outlet port. The two ports of the spiral housing can be mounted in at least two positions. In the first position, the axis of the outlet port forms a 90 degree angle with the axis of the inlet port forming a centerline pump. In the second position, the axes of the ports form a 180 degree angle forming an inline pump.

Abstract: An impeller forming a unit with the spherical rotor of a sphero-pump consists of a disc with vanes and an inlet member, both made by injection molding from resin. A rotor plate made from a thick gauge sheet metal covers the vanes and is held in position by rivet type protrusions on the inlet member and compensates the weight of the rotor.

Abstract: The invention relates to reciprocating pumps for liquids and gases, especially fluid-solid dispersions containing abrasives. The cylinder is made from material which is harder than the abrasive particles of the fluid. This cylinder rotates around the piston, independent of the number of strokes per minute, so that a lubricating film is formed. This rotation prevents both contact between the piston and the cylinder and freezing of the piston within the cylinder.

Abstract: A rotor for an electric motor with a spherical surface consists of a ring of soft iron and a squirrel cage made preferably from copper. The squirrel cage consists of copper bars lying in spiral grooves and a cooper ring on each axial end of the iron ring, short-circuiting all bars. The pole segments between the grooves do not have pole shoes. A cap made of ferro-magnetic metal covers the windings and acts magnetically in the same way as pole shoes. The cap surrounds the hollow spaces between the ring and the cap. The squirrel cage will preferably be cast by filling the spaces with molten copper during manufacture.

Abstract: The invention relates to canned pumps which form a unit with a spherical electric motor (hereinafter referred to as "spherical pumps"). A rotating unit, made up of the rotor and the impeller is supported by a spherical bearing. This spherical bearing has a self-cleaning property, preventing accumulation of dirt particles within the lubricating film.

Abstract: The invention relates to canned pumps which form a unit with a spherical electric motor wherein the discharge is guided from one axial end to the other.

Abstract: A fluid flow machine consisting of a stator, mounted underneath a hot water tank, and an armature-impeller unit arranged inside said hot water tank, being separated from said stator by a spherical, magnetically permeable separation wall, which generates a toroidal vortex inside the water tank. Said vortex conveys hot water from the upper region of the tank to its lower region until the whole tank is filled with water of a uniform temperature.

Abstract: A domestic hot water system in which the remote end forms a loop connected to the hot water tank and in which a pump circulates hot water at a rate sufficient to prevent cooling of the water in the piping below a predetermined temperature, so that hot water can flow immediately out of all outlets.

Abstract: An electric-motor-driven circulating pump for heating systems reduces power consumption of the motor, whereby the reduction ensues by means of periodic interruption of a line feed by means of electronic switch means so that switch-on and pause intervals follow one another. The switch means interrupt or close current flow at a zero-axis crossing of the voltage of the line feed.

Abstract: A stator design for a spherical gap motor having a stator and rotor wherein the lamination strips which make up the teeth of the stator are formed as portions of a cylindrical wall. Each of the lamination strips is concentric about the axis of rotation of the rotor. At the axial end of the lamination strips nearest the rotor pole-shoes are formed as a T-shaped end on the laminations. The ends of the lamination strips are provided with recesses in order to closely position adjacent strips. The recesses are adapted to receive lamination strips of adjacent pole-shoes in order to decrease the approach angle of the lamination to the pole-shoe. The ratio between the area of two adjacent pole-shoes which are exposed to the magnetic flux gap is the same ratio as the cross-sectional area of the respective lamination strips in a plane of rotation.

Abstract: A pump motor unit of the type having an impeller connected to the armature, which unit is located in a pump housing whereby the armature is separated from the stator or a driving annular magnet by a magnetic gap in which a magnetically permeable dividing wall is situated, separating the wet side of the pump from the dry side, the dry side containing the electric stator or motor, said impeller armature unit includes radially extending channels whose suction sides communicate with the magnetic gap.

Abstract: A magnetic machine of spherical-gap type includes a bearing arrangement of a rotating member having convex and concave elements. An other radially disposed bearing is concentrically arranged with the abovementioned bearing arrangement to form a gap which limits the angle of wobble of the rotating member and preventing the angle from increasing once the rotating member contacts the radially disposed member.

Abstract: Pole shoe elements for widening the teeth of an electrical machine of spherical-gap type. The machine includes a plurality of teeth. Each tooth has a groove, so that H-shaped element with a strap is adapted to fit within a groove of each tooth. A plurality of such shoe elements forming a ring by a connection strap between adjacent pole shoe elements.

Abstract: Process for the manufacture of rotors for asynchronous electrical motors with spherical air gaps. These rotors are designed as permanent magnets with low coercive force and comparably high electrical conductivity so that eddy currents can be formed as long as rotor rpm is different from the frequency of the rotating field of the stator while these rotors convert to permanent magnets running under synchronous conditions at rated performance. The process steps are the following:1. Milling an iron alloy with at least 5% cobalt to a sheet metal strip.2. Producing of rings by stamping.3. Annealing the rings to at least 1050.degree. C.4. Forming the rings to semi-spherical caps by a deep-drawing process at the annealing temperature pursuant to 3.

Abstract: A submersible jet stream device having inlet apertures and an outlet nozzle which creates a jet stream which can be located either in a first position at the water surface or a second position at a pool bottom. The device may be hinged about a horizontal position for movement between the two positions. An embodiment may include two nozzles, one at each end of a housing and two propellers on a reversible motor disposed within the housing whereby the nozzle used for the flow is determined by the direction of motor rotation.

Abstract: A solar collector system having an absorber element including fluid flow channels therein and a cold water inlet and hot water outlet. A temperature sensor is included in the hot water outlet and operates a valve in the cold water inlet to open the valve when the temperature reaches a predetermined value and to close the valve when the temperature drops below the predetermined value whereby the valve operates cyclically to intermittently fill the absorber channels with cold water and to displace hot water therefrom.

Abstract: A heating system including a hollow body having a part of a low pressure and low temperature heating circuit therein. The hollow body has a plurality of parallel juxtaposed fluid channels formed by a pair of spaced thermoplastic wall members connected by webs to form the channels. A plurality of the channels are connected to an inlet manifold and to an outlet manifold whereby the flow of fluid in said channels is parallel over substantially the complete area of the wall members.

Abstract: A centrifugal circulation pump for a fluid heat carrier where the pump has a housing including a centrifugal impeller, an inlet pipe for admitting a first heat carrier into the housing and a discharge pipe for discharging the first heat carrier from the housing. A heat transfer means in the form of a tubular coil is positioned in the housing through which a second heat carrier flows. The centrifugal impeller moves the first heat carrier with a swirl motion in a direction parallel to the turns of the coil whereby heat is exchanged between the first and second heat carriers.