Abstract: A method for producing a coffee beverage, using ground coffee in a brewing chamber of a coffee machine including a control unit and a brewing cylinder housing a movably arranged piston having a piston drive for providing a changeable volume for the brewing chamber. An amount of ground coffee is filled into the brewing chamber. Water is conduct through the ground coffee in the brewing chamber to prepare the coffee beverage. A volume flow of water flowing through the brewing chamber is determined and compared to a desired value for the volume flow. An adjustment value of the piston position is changed, thus changing the pressing force exerted onto the ground coffee, in the brewing chamber as a function of deviations from the desired value for the volume flow to control the volume flow until a desired volume flow is reached.

Abstract: A device for processing milk foam for use in an automatic hot and/or cold beverage machine includes a milk pump to pump the milk foam, and a secondary processing device coupled to the milk foam pump to change the consistency of the milk foam. The secondary processing device includes a homogenizer to break up and distribute air bubbles in the milk foam. The homogenizer has a reducing region including a plurality of impact bodies arranged to define a channel labyrinth through which the milk foam is flowable. Additionally, there is provided a process for homogenizing milk foam utilizing the above device, includes steps of a) impacting divided partial flows of the milk foam with the impact surfaces to divide the air bubbles of the milk foam; and b) mixing the divided partial flows with the divided air bubbles together to form new partial flows.

Abstract: A process for producing milk foam includes pumping milk through a milk line with a milk pump having an adjustable speed for adjusting the capacity of the milk pump. Milk from the milk line and air are mixed inside a first mixing chamber to produce a milk foam. Properties of the milk foam, including a consistency of the milk foam, are a function of the speed of the milk pump. A device for producing the milk foam includes a milk container; an outlet; a milk line connected between the milk container and the outlet; a first mixing chamber installed in the milk line to mix milk and air to produce milk foam; and a milk pump having an adjustable speed coupled into the milk line.

Abstract: A method for producing a fresh, cold, coffee-based beverage using a predetermined amount of ground coffee, includes: feeding a predetermined amount of ground coffee into a brewing chamber; preparing a coffee concentrate with the supplied predetermined amount of ground coffee with a brewing operation in the brewing chamber, wherein the prepared coffee concentrate constitutes a specifiable multiple (VK) of a concentration (KN) for a normal drinking quality for filtered coffee at approximately 1.2 to 1.4% dry substance share; and mixing the prepared coffee concentrate with an amount of water which corresponds to a specifiable multiple (VM) of the amount of the prepared fresh coffee concentrate to prepare the fresh, cold, coffee-based beverage.

Abstract: A method for producing a fresh, cold, coffee-based beverage using a predetermined amount of ground coffee, includes: feeding a predetermined amount of ground coffee into a brewing chamber; preparing a coffee concentrate with the supplied predetermined amount of ground coffee with a brewing operation in the brewing chamber, wherein the prepared coffee concentrate constitutes a specifiable multiple (VK) of a concentration (KN) for a normal drinking quality for filtered coffee at approximately 1.2 to 1.4% dry substance share; and mixing the prepared coffee concentrate with an amount of water which corresponds to a specifiable multiple (VM) of the amount of the prepared fresh coffee concentrate to prepare the fresh, cold, coffee-based beverage.

Abstract: An electric motor actuating drive for actuating elements designed such that the drive train, which is formed from spur gears, is not self-locking, and such that a braking spring is operatively connected to a gearbox stage upstream of the output-drive element of the drive train, such that, when the drive motor is disconnected, the actuating element is effectively prevented from being moved even when attempts are made to move it by external force or by extreme force. Furthermore, the actuating drive is in the form of a spring return and is equipped with a drive spring which is arranged such that the load on it is removed in the event of electrical power failure, and it therefore acts as a drive element. Furthermore, the electrical components are arranged in an end-face housing wall for a compact design.

Abstract: An electromotive actuating device for swivellable actuators includes a housing having driving parts of a transmission train mounted therein. The transmission train is configured to be driven by a driving motor. An output member is assigned to the housing. A centering tensioning device is assigned to the output member. The centering tensioning device includes two oppositely moveable tensioning elements configured to tension a transmission shaft fixedly connected to an actuator. The centering tensioning device is configured to be synchronously swiveled with the output member with respect to the housing. A swiveling angle of the tensioning device is limited by stationarily acting stops that are adjustably and fixably arranged at the housing.

Abstract: A control unit for an electric motor of an actuator. The control unit including a controller, a capacitive energy storage device having a charge voltage, a temperature sensor to measure an ambient temperature, and a charge converter.

Abstract: An electromotive adjustment device for adjusting a control element includes a housing and a gear mechanism which has a plurality of intermeshing gear wheels to define a drive train. In driving relationship with the gear mechanism is a drive motor which is constructed as a brushless motor with an external rotor and includes an output journal, whereby the output journal has a tooth portion in engagement with a helical spur gear wheel of the gear mechanism.

Abstract: An electromotive servo drive includes a drive motor, a drive train, which is fitted with an output member and includes at least one gear stage for reducing the rotation speed of the motor, and a rotatable hand-operated adjusting shaft for adjusting the output member of the drive train such that at least the drive train, arranged between the adjusting shaft and the output member, is self-locking. One of the gear stages is fitted with a brake element such that the part of the drive train leading from the gear stage to the output member is prevented from returning, while the hand-operated adjusting shaft can freely rotate in both directions of rotation. The brake element is a wrap spring which is rotatably supported in a bushing, and an inner control part engages the wrap spring to couple both angled ends of the wrap spring such that the wrap spring can be expanded in order to obtain a braking effect in a rotation direction.

Abstract: An adjustment device includes a lifting mechanism having a lifting arm articulated to a component of a stationary supporting structure for moving the component between two end positions. A rotary drive mechanism has an output member which is linked to the lifting arm. In order to completely, or at least partially, absorb a load moment exerted during movement of the component, at least one stationary support element is associated to the rotary drive mechanism.

Abstract: An adjustment drive includes a drive motor, and a drive train in driving relationship with the drive motor for reducing a motor speed of the drive motor. The drive train includes a plurality of gear wheels operated by the drive motor and intermeshing with one another to form a chain to define at least one gear stage, whereby at least the plurality of gear wheels is supported by a carrier that defines thereby a separate drive unit.

Abstract: An adjustment device includes a lifting mechanism having a lifting arm articulated to a component of a stationary supporting structure for moving the component between two end positions. A rotary drive mechanism has an output member which is linked to the lifting arm. In order to completely, or at least partially, absorb a load moment exerted during movement of the component, at least one stationary support element is associated to the rotary drive mechanism.

Abstract: An electromotive servo drive includes a drive motor, a drive train, which is fitted with an output member and includes at least one gear stage for reducing the rotation speed of the motor, and a rotatable hand-operated adjusting shaft for adjusting the output member of the drive train such that at least the drive train, arranged between the adjusting shaft and the output member, is self-locking. One of the gear stages is fitted with a brake element such that the part of the drive train leading from the gear stage to the output member is prevented from returning, while the hand-operated adjusting shaft can freely rotate in both directions of rotation. The brake element is a wrap spring which is rotatably supported in a bushing, and an inner control part engages the wrap spring to couple both angled ends of the wrap spring such that the wrap spring can be expanded in order to obtain a braking effect in a rotation direction.

Abstract: An electromotive adjustment device for adjusting a control element includes a housing and a gear mechanism which has a plurality of intermeshing gear wheels to define a drive train. In driving relationship with the gear mechanism is a drive motor which is constructed as a brushless motor with an external rotor and includes an output journal, whereby the output journal has a tooth portion in engagement with a helical spur gear wheel of the gear mechanism.

Abstract: An adjustment device for adjusting a control element of a flap valve in heating, ventilating and air-conditioning systems includes a drive motor, and a drive train in driving relationship with the drive motor. The drive train has an output member which is connected to a control element to be adjusted. A recorder is provided for recognizing and/or adjusting a position of the control element and/or a component of the drive train, wherein the recorder has a control member which is directly connected in form-fitting engagement with the output member of the drive train.

Abstract: An electromotive servo drive includes a drive motor having an external rotor and a drive train in driving relationship with the drive motor and having an output member operatively connected to a control element to be adjusted. A locking device having a brake element is movable between a release position in which the rotor is free to rotate and an operative position in which the rotor is locked in place. Operatively connected to the brake element is a reset spring for maintaining the rotor at a standstill, when the reset spring is under tension, wherein the reset spring tensioned by turning an actuating shaft by hand.

Abstract: An adjustment drive includes a drive motor, and a drive train in driving relationship with the drive motor for reducing a motor speed of the drive motor. The drive train includes a plurality of gear wheels operated by the drive motor and intermeshing with one another to form a chain to define at least one gear stage, whereby at least the plurality of gear wheels is supported by a carrier that defines thereby a separate drive unit.

Abstract: An electromotive servo drive includes a drive motor having an external rotor and a drive train in driving relationship with the drive motor and having an output member operatively connected to a control element to be adjusted. A locking device having a brake element is movable between a release position in which the rotor is free to rotate and an operative position in which the rotor is locked in place. Operatively connected to the brake element is a reset spring for maintaining the rotor at a standstill, when the reset spring is under tension, wherein the reset spring is tensioned by turning an actuating shaft by hand.

Abstract: An adjustment device for adjusting a control element of a flap valve in heating, ventilating and air-conditioning systems includes a drive motor, and a drive train in driving relationship with the drive motor. The drive train has an output member which is connected to a control element to be adjusted. A recorder is provided for recognizing and/or adjusting a position of the control element and/or a component of the drive train, wherein the recorder has a control member which is directly connected in form-fitting engagement with the output member of the drive train.