Abstract: An electric pump includes an impeller, a shaft and a motor having at least one permanent magnet rotor and a stator. The impeller is coupled by the shaft to the at least one permanent magnet rotor of the electric motor. A hermetically sealed housing is provided in which the shaft is supported and which has openings for delivery side and suction side connections for material to be pumped. The rotor is disposed inside the housing and the stator of the electric motor is disposed outside the housing. At least one stator carrier is attached to the housing, the stator being mounted in the at least one stator carrier. The at least one stator carrier is of one-piece configuration so as to enclose the housing across an entire circumference thereof in a cup-shaped manner. The at least one stator carrier holds a liquid for cooling the at least one stator.

Abstract: An electric machine comprising a winding-carrying stator part (4) and an armature part (6) movable relative thereto. The stator poles (10) and their winding (12) are mounted on a stator support (8) of U-shaped cross-section. The stator support (8) has formed therein flow spaces (30, 32) for a cooling fluid (34) flowing at least across partial regions of the stator pole winding (12).

Abstract: An electric machine includes an exciter part and an induction part disposed adjacent the exciter part. The exciter part and the induction part define an air gap there-between and are movable relative to one another thereby defining a direction of movement. The induction part includes teeth disposed adjacent one another and projecting in a direction toward the air gap. The teeth define grooves therebetween, each of the teeth having a tooth base and a tooth tip adjacent the air gap. In addition, each of a plurality of the teeth further includes a middle portion having two ends and a constant width defined in a direction along the air gap and perpendicular to the direction of movement; and a pair of tooth widening portions, each of the tooth widening portions having a free end and a transition end and being located at one of the two ends of the middle portion at the transition end thereof for forming one of the plurality of the teeth with the middle portion.

Abstract: A linear accelerator has at least one longitudinal stator section that defines a linear path of movement and that comprises several stator coils as well as a rotor with several rotor coils that can be accelerated along the path of movement. The stator is designed as a tubular body from the inner wall of which project coil carriers with coil conductors that are mutually offset by 90 degrees. The cavities thus formed are engaged by the rotor coils that comprise each an electrically non-conductive carrier on the sides on which are arranged meandering coil conductors. The design and arrangement of the rotor coils and stator coils allow a circular magnetic field to be generated, with the result that the rotor is axially accelerated. The rotor is supplied with current by conductor rails by a cable entrained with the rotor an/or by charge accumulation in the coils before acceleration begins.

Abstract: A pump of compact design, which is hermetically sealed to the outside and has no shaft lead-outs to the outside, includes a housing with an internal partition dividing the inside of the housing into a drive section and a pump section. A single shaft, which is supported in the partition, carries on one side the rotor of an electric drive motor and on the other side the impeller of the pump. In the cavity of the drive section, a gas pressure is generated which assists in preventing the pumping material from passing into the drive section.

Abstract: A fluid-displacement apparatus, especially a blower, has a stator of an electric motor directly driving the impeller integrated in the flow passage housing while the rotor of the electric motor is surrounded by the stator and is mounted on the ends of the blades of the impeller or propeller.

Abstract: A non-rail bound vehicle comprising at least two drive electromotors (8), the one thereof being provided for driving a driving wheel (12) on the left side of the vehicle and the other one thereof being provided for driving a driving wheel (12) on the fight side of the vehicle, characterized in that each of the two electromotors (8) has its own motor control (30) associated therewith for presetting the instantaneous nominal power and/or the instantaneous nominal speed of the respective electromotor (8); and that a superior central control (28) connected to the central controls (30) is provided which controls the two electromotors (8) via the motor controls (30) so as to prevent drive slip and/or brake locking and/or to provide a fight/left drive differential that is favourable in terms of movement dynamics, with the central control (28) and/or the motor controls (30) taking into account information on the instantaneous actual electrical power and/or the instantaneous actual speed of the two electromotors (8).

Abstract: A wind power plant for harnessing wind power includes a tower; a plurality of upright rotor blades spaced apart circumferentially and spaced radially from a rotational axis; and a supporting structure for the rotor blades leading from the tower to the rotor blades.

Abstract: An electric machine includes an armature which has a permanent-magnetic excitation part of the machine and a stator which has an induction part of the machine. The induction part includes a first and a second region, each region equipped with current conductors. The armature and the stator are movable relative to each other. The machine includes an electronic commutator which has electronic components. An adjustment to purposefully change a voltage induced in the induction part during operation of the machine, by adjustment of the relative phase of the voltages induced in the two regions of the induction part is achievable due to the first region of the induction part being physically adjustable relative to the second region of the induction part in the direction of relative movement of the armature and the stator. In addition, a sensor is provided in the second region for detecting the instantaneous relative position of the armature and the stator.

Abstract: An electric machine (2) comprising a first functional part (4) with a permanently magnetic excitation system (12) and a second functional part (6) with a conductor system (10), the first functional part (4) and the second functional part (6) being movable relative to each other along the active area (24) of an air gap. The first functional part (4) comprises--as seen progressively in the direction of relative movement (32)--an alternating sequence of permanent magnets (12) magnetized in the direction of relative movement (32), and of magnetically conductive material portions (14). The magnetically conductive material portions (14) each have--facing the active area (24)--a magnetic flux outlet area (22) which is smaller than the sum of the magnetic flux cross-sectional areas (21) of the two adjacent permanent magnets (12), so that the magnetic flux of the permanent magnets (12) is concentrated for the active area (24).

Abstract: A process for supplying a current consumer with current from an accumulator for electrical energy, in which electrical energy pulses of very short duration each are supplied to the current consumer from a superconducting accumulator (2) made with superconductors (8) of very small diameter or very small layer thickness. The superconductors (8) are preferably high-temperature superconductors.

Abstract: An electromagnetic linear drive including a stator which constitutes a path of movement for a vehicle. The linear drive is equipped with current conductors, and is divided into a plurality of stator elements of equal length. A movable portion which constitutes a vehicle is preferably equipped with permanent magnets cooperating with the stator to provide the drive. The stator is divided into a number of motor elements, each motor element including a minimum number of stator elements as well as an energy supply unit adapted to be switched on and off individually by sensors disposed along the path of movement. All motor elements are designed for the same maximum performance, and motor elements of different lengths are provided. The length of each motor element is determined by the local need for maximum performance per unit length which exists at the location of the respective motor element in accordance with a predetermined speed characteristic at that point along the path of movement.

Abstract: The invention relates to an assembly for converting the reciprocating motion of at least one piston of a combustion engine into an oscillating rotary motion of at least one shaft, the piston being coupled with the shaft via a flexible band connected with a winding on and off area of the shaft. The rotational energy existing in the rotary motion of the shaft is utilized to continue rotation of the shaft in the same direction when the end of the pistons's working stroke is passed, so that the band is then wound onto the winding on and off area of the shaft in the opposite direction, thereby causing the band to pull back the piston. Alternatively, two pistons with opposite working stroke directions are present whose bands are connected to the shaft with opposite directions of winding. Due to a connecting rod between the two pistons, the working stroke of one piston pushes the other piston back to its starting position.

Abstract: An electromagnetic linear drive is disclosed which includes a stator divided into motor elements and which constitutes a path of movement for a movable vehicle. Each motor element includes an energy supply unit adapted to be switched on and off individually and a power control unit with which a memory is associated. The memory is capable of storing a number of different running speed control signals corresponding to a number of predetermined running characteristics. The speed control signals control each power control unit so that it will supply power to its associated motor element, resulting in a locally controlled speed of the vehicle which runs over the motor element. The locally controlled speed corresponds to the running characteristics selected. This locally controlled speed lies in the range from running speed zero to a given locally specific maximum speed predetermined individually for each respective motor element.

Abstract: A rotatory electromotor having a stator with stator poles and a rotor with rotor poles, permanent magnets being provided for the stator poles or for the rotor poles and electromagnets for the poles not provided with the permanent magnets, electronic switching means being provided for switching electromagnets in accordance with the relative positions of the electromagnets and permanent magnets in each case, and the permanent magnets and the electromagnets being arranged in such a way that only some of the electromagnets of the electromotor can be simultaneously switched in each case. Several adjacent electromagnets form a group of electromagnets belonging to one phase, this group cooperating with a number of permanent magnets located opposite, and adjacent groups of electromagnets belong to different phases.

Abstract: An electromagnetic linear drive including at least two stators divided into motor elements which constitute two paths of movement for movable vehicles in opposite directions is disclosed. An energy supply unit, including a power control unit, is associated with each of two opposed motor elements belonging to one or the other path of movement. The energy supply unit is selectively connectable to the motor element of one path of movement or to the motor element of the other path of movement, as required. When a vehicle is located above both motor elements associated with a single energy supply unit, the common energy supply unit is connected, according to a predetermined selection, to one of the two motor elements or alternated between both motor elements.

Abstract: A magnetic levitation vehicle (2) in which the load variations are converted by a coupling device (42) into gap width alterations of an attracting magnetic support device (14). A spring device between the payload carrier (4) and the support component (6) of the vehicle (2) has a sequential arrangement of two spring elements (40; 38) and the coupling device (42) responds only to the deformation of one of the two spring elements.

Abstract: A rotary electric machine (motor or generator) comprises a first functional member and a second functional member rotatable with respect to the first one. One of the two functional members comprises a plurality of permanent magnet poles distributed in a ring arrangement, while the other one comprises a plurality of switchable electromagnet poles disposed in a ring arrangement opposite the permanent magnet poles, with an air gap in between. The numbers of permanent magnet poles and electromagnet poles either may be exactly or almost the same. At least one electronic circuit means controlled by at least one sensor detecting the rotational relative positions of the two functional members is provided for switching the electromagnet poles in the respective suitable direction of current flow and for the period of time of functional suitable relative positions with respect to the permanent magnet poles.

Abstract: A vehicle has a compartment joined to a carrier by springs. An attracting magnetic device has a first part (e.g. a ferromagnetic travelling field stator) mounted on a roadway, and a second part (e.g. spaced permanent magnets forming a synchronous linear motor in combination with the stator) mounted on the carrier. The two parts of the magnet device lie opposite one another to leave an air gap therebetween and so to hold the vehicle in spaced relation to the roadway. An additional-force device is mounted to act between the vehicle and the roadway and supplements the force of the magnetic attraction to make up the holding force needed to maintain the vehicle in the desired position relative to the roadway. The part of the magnetic device that is mounted on the vehicle can be displaced relative to the additional-force device to vary the width of the air gap and thereby vary the force of the magnetic attraction.

Abstract: A system for magnetically supporting a vehicle equipped with permanent magnets and propelled by a linear induction motor along a roadway defined by a stator member energized by polyphase alternating current, the system including members located on the vehicle for maintaining the air-gap between the pole faces of the permanent magnets and the stator member. In a preferred form the air-gap maintaining members are electro-magnets whose energizing windings are supplied with variable current to effect the control of the air-gap distance.