Abstract: The invention relates to a pump for fluid media, more particularly to a cooling water pump for internal combustion engines with an electric motor configured as a disk armature for actuating the pump, said electric motor being directly connected to an impeller (6) of the pump. A simple structure and high operational reliability are achieved in that a driving flange (18) projects radially outward on the outer circumference of the pump's impeller, magnets (19) or windings (20) being molded therein for the contactless drive of the impeller (6).

Abstract: A radial-flow pump (1), and especially a coolant pump for an internal combustion engine, comprising an impeller (2) provided with vanes (5) and a directing device (4) including at least one temperature- and/or speed-sensitive element for temperature-dependent control of the coolant flow, where at least one impeller vane (5) and/or the directing device (4) is configured as a speed-sensitive element. In order to increase efficiency, the proposal is put forward that the impeller vanes (5) should be elastically deformable by Coriolis forces of the coolant flow, the discharge angles (&agr;), which are preferably defined between impeller vanes (5) and impeller tangential planes (&egr;), decreasing with an increase in speed.

Abstract: The present invention relates to an apparatus for adjusting a camshaft of an internal combustion engine with at least one electromotor which produces, by way of a planetary gear, the adjustment of the camshaft with respect to a pinion, with the planetary gear comprising a first ring gear and a second ring gear as well as at least a first planet wheel which is in engagement with the first ring gear and at least a second planet wheel which is in engagement with the second ring gear and which is rigidly connected with the first planet wheel.

Abstract: A protective furnace gas for protecting a bath of magnesium in furnace equipment includes a mixture of inert gas such as nitrogen and 0.3 to 1.5% by volume of SO2, the mixture being provided in a temperature-controlled room wherein the temperature is at least 22° C. and preferably 25° to 35° C.

Abstract: A cooling water pump, for an internal-combustion engine in particular, with a casing provided with at least one bearing designed to support a pump shaft, with a sealing element devised to seal the bearing against a working space containing the cooling agent as well as with a leakage chamber arranged in the casing and receiving the cooling agent that leaks through the sealing element. A particularly simple way of production is achieved by the fact that the leakage chamber may be brought out of shape by a slider pulled in an essentially transverse direction and preferably normal to the plane on the axis of the pump shaft.

Abstract: The invention relates to a centrifugal pump with an impeller which is arranged in a pump housing and can be driven by a shaft which is rotatably held in the pump housing by way of at least one bearing, with the bearing, which is preferably arranged as a roller bearing, being arranged in a bearing holder which is detachably connected with the pump housing. In order to simplify the production of the water pump and to facilitate maintenance it is provided that the bearing holder, at the end facing the impeller, comprises an assembly part which is preferably integrally designed with the pipe section.

Abstract: The invention relates to a seat back for a vehicle with a one-piece supporting structure made of light metal alloy, with a frame having an essentially rectangular contour and defining the upper, the lower and the two lateral delimitations of the seat back. A particularly stable embodiment is achieved by having a cross-shaped reinforcement rib accommodated in the frame in the vicinity of its diagonals, said rib being provided with rib structures arranged thereon in a grid-like configuration.

Abstract: A device for adjusting the phase angle of a camshaft of an internal combustion engine includes a drive gear for driving a camshaft accommodated in a coaxial arrangement relative to the camshaft and an electric motor communicating with the camshaft via a Harmonic Drive having a roller bearing with an elliptical inner ring, an externally toothed, flexible gear arranged on the roller bearing, and a rigid, internally toothed gear engaging the externally toothed gear. A simple structure is achieved by providing the electric motor with a housing which is rigidly connected to the camshaft via retaining elements which extend through recesses in the drive gear so that the recesses restrict the allowable adjusting range of the camshaft.

Abstract: The present invention relates to a cooling system for an internal combustion engine with an electrically driven coolant pump designed to circulate a coolant through the internal combustion engine and through a radiator designed to dissipate the heat, wherein a safety device is provided which has a device for recognizing cases of emergency and an emergency operating device, wherein the device for recognizing cases of emergency is devised to detect a perturbation in the area of the electrically driven coolant pump. Increased reliability is achieved by devising the emergency operating device in such a manner that, in case of a perturbation in the area of the coolant pump, it causes a mechanical connection of the coolant pump with a component part driven by the internal combustion engine to be established.

Abstract: A device for adjusting the phase angle of a camshaft of an internal combustion engine with a drive gear for driving a camshaft accommodated in a coaxial arrangement relative to the camshaft and with an electric motor communicating with the camshaft via a Harmonic Drive having a roller bearing with an elliptical inner ring, an externally toothed, flexible gear arranged on said roller bearing and a rigid, internally toothed gear engaging the externally toothed gear. A simple and compact structure is achieved by providing the electric motor with a housing which is rigidly connected to the drive gear and which is at least partially arranged therein and by also providing the electric motor with a rotor configured as a disk rotor accommodated in a slot between two housing halves of the electric motor.

Abstract: The invention relates to a cooling water pump for an internal combustion engine with a housing provided with a bearing designed to support a pump shaft and with a sealing element devised to seal the bearing against a working area containing the cooling agent as well as with a leakage chamber receiving the cooling agent that oozes through the sealing element, wherein the leakage chamber is arranged in a recess of the housing and is provided with an opening to the outside, said opening being partially closed by a locking device. A particularly simple way of production is achieved by having the opening closed by a foil, preferably by a metal foil, deposited on a flange facing which is flush with a front surface of the housing.

Abstract: A high conveying capacity cooling water pump for an internal combustion engine includes a bearing element, a rotor which is held therein and carries three impellers, an inflow housing and an outflow housing. The outflow housing and the bearing element form a integral unit.

Abstract: The invention relates to a device for adjusting the phase angle of a camshaft of an internal combustion engine with a drive gear for driving a camshaft accommodated in a coaxial arrangement relative to the camshaft and with an electric motor for rotating the camshaft relative to the drive gear, the electric motor having two concentrically arranged rotors, of which the one is connected to the camshaft and the other to the drive gear. Simple and safe adjusting is achieved by having a first coil arrangement non rotatably linked to one of the rotors and electromagnetically interacting with a stationary coil arrangement in order to induce or to transmit the energy needed for the operation of the electric motor.

Abstract: In an electrically driven coolant pump with an electromotor-pump unit an electronic control unit, generates a pulse-width modulated control signal for the pump depending on at least one engine operating parameter. In order to recognize irregularities and malfunctions in the pump's operation in due time, the control unit is connected with an error detector for the recognition of abnormal control signals and pump operating conditions and with a speed controlling device for the pump speed, with the error detector having an emergency device for the coolant pump.

Abstract: The invention relates to an oil pump for an internal combustion engine with at least one pair of toothed wheels which are in mutual engagement, at least one intake port and at least one outlet port. An improved supply of oil at reduced driving power can be achieved with at least two pairs of toothed wheels; a first common shaft, which a first toothed wheel of each pair of toothed wheels is arranged, and means are provided to charge the individual pairs of toothed wheels with oil depending on the required quantity of conveyed oil.

Abstract: An axial piston displacement machine for converting hydraulic work into mechanical work or vice-versa with a plurality of hydraulic cylinders which are rotatably arranged with substantially parallel axes about a joint longitudinal axis, including pistons which are movably arranged in the cylinders and which are in connection with a swivellable plate an adjusting device for setting the swiveling angle of the plate a sleeve which rotates with the cylinders and is arranged outside of the plate, and engagement means for transmitting a torque between the plate and the sleeve on the plate and on the sleeve. An increased efficiency is achieved by including a toothed wheel attached on the outer circumference of the sleeve in order to tap a torque from the sleeve or to introduce a torque to the sleeve.

Abstract: A coolant pump, in particular for use in internal combustion engines, includes a pump shaft carrying an impeller with substantially axial intake and radial discharge, and a casing provided with at least one roller bearing supporting the pump shaft, and a pulley for driving the pump. A particularly compact design is obtained by firmly connecting the inner race of the roller bearing to the casing, and by attaching the outer race of the roller bearing to the pulley.

Abstract: A cooling water pump for an internal combustion engine, includes a flow conducting housing in which an impeller is arranged and a bearing part which is arranged separate from the flow conducting housing and provided with a bearing for the impeller. A simple and cost-effective production is achieved by arranging the flow conducting housing between an anchoring part and the bearing part, and such that the bearing part encompasses the flow conducting housing and is attached to the anchoring part.

Abstract: A centrifugal pump includes an impeller which is attached to a drive shaft, a multipart pump housing which is partly made of plastic material and contains an intake chamber positioned on the drive side of the impeller and a spiral-shaped pressure chamber, a bearing support disposed in the region of the intake chamber being made of metallic material, and the pump housing is provided with an intake flange on the drive side and a housing cover in the region of the pressure chamber. In order to reduce weight and manufacturing cost, the intake chamber is bounded on the one hand by the bearing support and on the other hand by a housing part which is made of plastic material and surrounds the bearing support to which it is connected, preferably so as to be detachable.

Abstract: A radial impeller for a centrifugal pump with at least one flow channel between an axial flow inlet zone and a substantially radial flow outlet zone, which flow channel is limited by the inside and outside surfaces of at least one rotor blade and by first and second annular channel surfaces which substantially extend transversally to the axis of the radial impeller, face one another and are integrally arranged with the radial impeller. In order to simplify the production of the radial impeller it is provided that the channel surfaces are provided with different diameters, with the smallest diameter of the first channel surface being slightly smaller than the largest diameter of the second channel surface and with preferably the first channel surface being arranged on the side of the inlet zone of the radial impeller.