Abstract: A material cutting device includes a rotatably mounted tool holder configured to carry a cutting tool and a drive for rotating the tool holder. The drive includes an electric motor with a rotor and a stator. The axis of rotation of the rotor of the electric motor and the axis of rotation of the tool holder are arranged coaxially. The stator encloses the rotor over an angle of less than 360 degrees.

Abstract: A soil compacting device includes an upper mass and a lower mass which is coupled to the upper mass by a spring. The lower mass is movable relative to the upper mass and comprises a ground contact element for soil compaction. A drive for generating a working movement of the ground contact element is provided on the upper mass, the drive has a tamping device and an electric motor for driving the tamping device. The tamping device has a crank wheel that can be driven in rotating manner by the electric motor, a connection rod coupled to the crank wheel, and a tamping piston which can be moved in reciprocating fashion and is coupled to the connection rod and which interacts with the spring. The electric motor has a stator and a rotor. The rotor is rigidly or elastically coupled to the crank wheel.

Abstract: The present application relates to Klebsiella pneumoniae O-antigens, conjugates comprising a K. pneumoniae O-antigen, host cells suitable for their production and immunogenic compositions or vaccines containing at least one Klebsiella pneumoniae O-antigen. The Klebsiella pneumoniae O1v1 O-antigen polysaccharide and the O1v2 O-antigen polysaccharide are produced in the absence of a wbbZ gene.

Abstract: A drive system includes a carrying device with a wearable carrying frame, an energy store carried by the carrying frame, and at least one electric drive motor carried by the carrying frame. A coupling device is configured to mechanically couple a work apparatus to the drive system. The carrying device is formed as a shoulder bag or backpack, having at least one strap that permits the carrying device to be worn over a shoulder of a user. Two straps may be provided that permit the carrying device to be worn over both shoulders of a user. Also disclosed is a tool having such a drive system and a work apparatus, which may be concrete vibrator.

Abstract: An unbalance exciter for a soil compaction device comprises at least two rotatable unbalance masses which are rotatably mounted in opposite directions relative to each other, and at least two rotors. Each of the unbalance masses is coupled to a respective one of the rotors. The at least two unbalance masses and the associated rotors are mounted coaxially relative to each other. A stator is associated with each of the rotors in such a way that each rotor and the associated stator form an electric motor.

Abstract: A material cutting device includes a rotatably mounted tool holder configured to carry a cutting tool and a drive for rotating the tool holder. The drive includes an electric motor with a rotor and a stator. The axis of rotation of the rotor of the electric motor and the axis of rotation of the tool holder are arranged coaxially. The stator encloses the rotor over an angle of less than 360 degrees.

Abstract: A soil compacting device includes an upper mass and a lower mass which is coupled to the upper mass by a spring. The lower mass is movable relative to the upper mass and comprises a ground contact element for soil compaction. A drive for generating a working movement of the ground contact element is provided on the upper mass, the drive has a tamping device and an electric motor for driving the tamping device. The tamping device has a crank wheel that can be driven in rotating manner by the electric motor, a connection rod coupled to the crank wheel, and a tamping piston which can be moved in reciprocating fashion and is coupled to the connection rod and which interacts with the spring. The electric motor has a stator and a rotor. The rotor is rigidly or elastically coupled to the crank wheel.

Abstract: A transportable power supply unit has at least one rechargeable electrical store for storing electric power and having a housing. At least one inverter converts a DC voltage of the rechargeable electrical store into a first AC voltage, such as a first grid voltage and/or first three-phase current, and/or into a second AC voltage. At least one connection unit, such as at least one socket and a plug, is provided for the first AC voltage and/or for the grid voltage. The connection unit is in the form of an AC voltage output of the inverter for the first AC voltage. At least one detachably connectable connecting unit is provided for the rechargeable electrical store. The connecting unit comprises at least one electrical contact apparatus for making detachably connectable contact with the rechargeable electrical store and at least one detachably connectable retaining apparatus for detachably connectably retaining the rechargeable electrical store in the housing.

Abstract: A liquid to refrigerant heat exchanger includes an enclosed coolant volume that is at least partially defined by a plastic housing and by a metal closure plate. The metal closure plate can be part of a brazed assembly containing a continuous refrigerant flow path. The refrigerant flow path is disposed within the coolant volume, where heat can be transferred between the refrigerant within the refrigerant flow path and the liquid within the coolant volume. The plastic housing can at least partially surround the refrigerant flow path to at least partially bound a liquid flow path along a portion of the coolant volume. An inlet diffuser and an outlet diffuser can be mounted to the housing to direct the liquid through the housing. The plastic housing is sealingly joined to the closure plate along an outer periphery of the closure plate.

Abstract: An oscillation excitation device for producing oscillations and/or vibrations includes an electric motor which has a stator unit and a rotor unit that can be rotated about an axis of rotation and has at least one rotor shaft. At least a first bearing unit and a second bearing unit are provided for rotatably mounting the rotor shaft and/or rotor unit. At least one electromagnetic drive system of the electric motor is arranged between the first bearing unit and the second bearing unit. At least one rotatable imbalance unit is provided for producing an imbalance. The imbalance unit is arranged, at least in part, between the first bearing unit and the second bearing unit.

Abstract: A compaction device for compacting a soil region includes at least one vibration unit and/or oscillation unit able to be driven by an electric drive motor. A soil contacting unit comprises at least one soil contacting element in contact with the soil region. The soil contacting unit comprises at least the electric drive motor and the vibration unit and/or the oscillation unit. At least one power supply unit supplies the electric drive motor with electric drive power. At least one electric plug device for releasably and electrically connecting the electric drive motor is provided between the electric drive motor and the power supply unit. At least one fixing device for releasably and mechanically fixing to the power supply unit is provided between the soil contacting element of the soil contacting unit and the power supply unit.

Abstract: A liquid to refrigerant heat exchanger includes a coolant volume that is at least partially defined by a plastic housing and by a metal closure plate. The plastic housing is sealingly joined to the closure plate along an outer periphery of the closure plate. The metal closure plate can be part of a brazed assembly that defines a continuous refrigerant flow path through the heat exchanger between a refrigerant inlet port and a refrigerant outlet port.

Abstract: A drive system includes a carrying device with a wearable carrying frame, an energy store carried by the carrying frame, and at least one electric drive motor carried by the carrying frame. A coupling device is configured to mechanically couple a work apparatus to the drive system. The carrying device is formed as a shoulder bag or backpack, having at least one strap that permits the carrying device to be worn over a shoulder of a user. Two straps may be provided that permit the carrying device to be worn over both shoulders of a user. Also disclosed is a tool having such a drive system and a work apparatus, which may be concrete vibrator.

Abstract: A plate heat exchanger includes a stack of plate pairs arranged within a housing. Comb-like baffles extend into flow gaps between the plate pairs to direct a fluid flow in a sinusoidal pattern within the flow gaps. The flow gaps are divided into two sub-sets of flow gaps, preferably alternatingly arranged along the height of the stack. Legs of some baffles extend into a first sub-set but not into the second sub-set, while legs of some baffles extend into the second sub-set but not into the first sub-set. The baffles are arranged so that the sinusoidal pattern in the second sub-set is phase-shifted form the sinusoidal pattern in the first sub-set.

Abstract: A liquid to refrigerant heat exchanger includes a coolant volume that is at least partially defined by a plastic housing and by a metal closure plate. The plastic housing is sealingly joined to the closure plate along an outer periphery of the closure plate. The metal closure plate can be part of a brazed assembly that defines a continuous refrigerant flow path through the heat exchanger between a refrigerant inlet port and a refrigerant outlet port.

Abstract: A transportable power supply unit has at least one rechargeable electrical store for storing electric power and having a housing. At least one inverter converts a DC voltage of the rechargeable electrical store into a first AC voltage, such as a first grid voltage and/or first three-phase current, and/or into a second AC voltage. At least one connection unit, such as at least one socket and a plug, is provided for the first AC voltage and/or for the grid voltage. The connection unit is in the form of an AC voltage output of the inverter for the first AC voltage At. least one detachably connectable connecting unit is provided for the rechargeable electrical store. The connecting unit comprises at least one electrical contact apparatus for making detachably connectable contact with the rechargeable electrical store and at least one detachably connectable retaining apparatus for detachably connectably retaining the rechargeable electrical store in the housing.

Abstract: A drive system includes a carrying device with a wearable carrying frame, an energy store carried by the carrying frame, and at least one electric drive motor carried by the carrying frame. A coupling device is configured to mechanically couple a work apparatus to the drive system. The carrying device is formed as a shoulder bag or backpack, having at least one strap that permits the carrying device to be worn over a shoulder of a user. Two straps may provided that permit the carrying device to be worn over both shoulders of a user.

Abstract: A carrying device includes a carrying frame, an energy store carried by the carrying frame, a transformer device, carried by the carrying frame, for transforming an electric current drawn from the energy store, and an electrical connection device, carried by the carrying frame, for connecting the carrying device to a consumer. The carrying device is in the form of a shoulder bag or backpack having at least one strap for wearing the carrying device over one or both shoulders of a user.

Abstract: A liquid to refrigerant heat exchanger includes an enclosed coolant volume that is at least partially defined by a plastic housing and by a metal closure plate. The metal closure plate can be part of a brazed assembly containing a continuous refrigerant flow path. The refrigerant flow path is disposed within the coolant volume, where heat can be transferred between the refrigerant within the refrigerant flow path and the liquid within the coolant volume. The plastic housing can at least partially surround the refrigerant flow path to at least partially bound a liquid flow path along a portion of the coolant volume. An inlet diffuser and an outlet diffuser can be mounted to the housing to direct the liquid through the housing. The plastic housing is sealingly joined to the closure plate along an outer periphery of the closure plate.

Abstract: A vibratory plate for soil compaction machine has an upper mass and a lower mass that is elastically coupled to the upper mass and that has a soil contact plate. The soil contact plate has a vibration exciter device. At least one energy storage element is situated on the upper mass.