US Pat. No. 9,214,758

HERMETIC HOUSING ARRANGEMENT

Liebherr-Elektronik GmbH,...

1. A housing arrangement, having at least one housing for connecting a plug-in connector, wherein the housing arrangement
has at least one seal, wherein the at least one seal comprises a compressible material having an elastic portion and positioned
in a milled portion provided in a border region between the housing and a plug flange of the plug-in connector, and further
comprising a bonding connection between the plug-in connector and the housing having a conductive surface coating.

US Pat. No. 9,571,014

DRIVE CIRCUIT FOR AN AIR BEARING MOTOR

LIEBHERR-ELEKTRONIK GMBH,...

1. A drive circuit for an aerodynamic bearing electric motor having an aerodynamic bearing of the motor shaft, the drive circuit
comprising:
a power supply for providing a supply voltage or DC-link voltage to an inverter for driving the aerodynamic bearing electric
motor;

at least one means for storing electrical energy by which the aerodynamic bearing electric motor is supplied with electrical
energy on a failure of the supply voltage or DC-link voltage to control the inverter to obtain a minimum speed of the motor
shaft required for the aerodynamic bearing electric motor; and

a controller for monitoring the rotational speed of the aerodynamic bearing electric motor shaft, and the supply voltage or
DC-link voltage to supply the aerodynamic bearing electric motor with electrical energy from the at least one means for storing
electrical energy upon the failure of the supply voltage or DC-link voltage to control the inverter to obtain the minimum
speed of the aerodynamic bearing motor shaft required for the aerodynamic bearing electric motor.

US Pat. No. 9,778,015

PISTON-CYLINDER UNIT WITH EVALUATION UNIT FOR DETERMINING THE PISTON POSITION

Liebherr-Elektronik GmbH,...

1. A piston-cylinder unit with a cylinder jacket and a piston rod longitudinally shiftably guided in the cylinder jacket,
as well as an evaluation unit which determines a position of the piston rod with respect to the cylinder jacket on the basis
of intrinsic electrical properties of the piston-cylinder unit, wherein the piston rod is short-circuited against a cylinder
or a cylinder head in a manner suitable for high frequencies via one or more contact elements in a region of an exit opening
of the piston rod out of the cylinder head.

US Pat. No. 9,601,931

DEVICE AND METHOD FOR THE MONITORING AND BALANCING OF A MULTI-CELL ENERGY STORAGE STACK

Liebherr-Elektronik GmbH,...

1. A device for monitoring and balancing cell voltages of at least two electrical energy storage cells of a multi-cell energy
storage stack comprising:
at least one capacitive energy storage element;
a voltage measuring unit;
a first combinatorial circuit having an input side selectively connected to each energy storage cell and first and second
output lines connected to the voltage measuring unit;

a second combinatorial circuit comprising a first switching element selectively directly connecting the first output line
with a positive electrode of the energy storage element, a second switching element selectively directly connecting the second
output line with the positive electrode of the energy storage element, a third switching element selectively directly connecting
the first output line of the first combinatorial circuit with a negative electrode of the energy storage element, and a fourth
switching element selectively directly connecting the second output line of the first combinatorial circuit with the negative
electrode of the energy storage element, the second combinatorial circuit connected to the voltage measuring unit via the
first and second output lines; and

a control unit, which is connected to the voltage measuring unit, and controls the first and second combinatorial circuits,
the control unit comprising a computer readable storage medium with non-transitory code for transferring a portion of an electrical
charge from a first arbitrary cell to a second arbitrary cell via the energy storage element once or a plurality of times
by directly coupling the first arbitrary cell with the energy storage element and then directly coupling the second arbitrary
cell with the energy storage element.

US Pat. No. 10,634,515

APPARATUS AND METHOD FOR THE POSITION DETERMINATION OF A CYLINDER PISTON

Liebherr-Elektronik GmbH,...

1. An apparatus for position determination of a cylinder piston located in a cylinder liner, comprising:a port for coupling an electrical signal into or for decoupling an electrical signal out of an interior of the cylinder liner, wherein
a signal coupled into the interior of the cylinder liner interacts with the cylinder piston; and
a unit for determining the position of the cylinder piston which is connected to the port and which is configured to determine the position of the cylinder piston in the cylinder liner with the aid of a vectorial measurement of a signal decoupled from the cylinder liner.

US Pat. No. 10,361,542

HIGH-PRESSURE FEEDTHROUGH FOR FEEDING THROUGH A COAXIAL CABLE INTO A HIGH-PRESSURE ZONE

Liebherr-Elektronik GmbH,...

1. A high-pressure feedthrough for feeding through a coaxial cable from a low-pressure zone into a high-pressure zone, the high-pressure feedthrough comprising:a support structure having at least one elongate bore that extends from a low-pressure side of the support structure to a high-pressure side of the support structure;
wherein the elongate bore is suitable for receiving an inner conductor of the coaxial cable and the coaxial cable is fed through the elongate bore from the low-pressure side to the high-pressure side; and
one or more components that serve as an outer conductor or a dielectric of the inner conductor of the coaxial cable fed through the elongate bore, wherein the support structure is electrically connectable to the outer conductor of the coaxial cable, and where the support structure is electrically conductive and serves as the outer conductor of the coaxial cable.

US Pat. No. 10,361,552

SOLID STATE POWER CONTROLLER HAVING SEMI-ANALOG OVERCURRENT PROTECTION

Liebherr-Elektronik GmbH,...

1. A solid state power controller, comprising:a power switch for interrupting a line;
a current sensor for measuring a current flow on the line; and
a control unit for controlling the power switch, the control unit adapted to prevent an overcurrent on the line on a basis of a measured current measured by the current sensor,
the control unit comprising a counter that is adapted a) to increment or b) to decrement a count when the measured current is larger than a threshold value and a) to decrement or b) to increment the count when the measured current is smaller than the threshold value, wherein
the power switch is adapted to interrupt the line when the counter reaches or exceeds a predefined count limit value.

US Pat. No. 10,973,145

FIXING APPARATUS FOR FIXING ONE OR MORE PRINTED CIRCUIT BOARDS TO A HOUSING WALL

Liebherr-Elektronik GmbH,...

1. A fixing apparatus (10) for fixing one or more printed circuit boards (30) to a housing wall (22) and havinga frame part (11) having a longitudinal recess (13) therethrough,
locking means (23) for fixing the frame part (11) to the housing wall (21), and
a wedge body (12) displaceably supported within the recess (13) of the frame part (11), wherein
the wedge body (12) comprises around an outer surface thereof, a plurality of sequentially connected wedge-like individual segments (12a, 12b, 12c, 12d, 12e, 12f) each having a symmetrical wedge shape with slanted planes converging in a longitudinal direction (14) until the next wedge-like segment directly adjoins, and
the recess (13) through the frame part (11) comprises an outer edge configured to exactly fit the shape of the slanted planes of the individual wedge-like segments (12a, 12b, 12c, 12d, 12e, 12f), such that
the wedge body (12) is longitudinally displaceable (14) into a position relative to the frame part (11) in which a compressive force (F) applied to the frame part (11) by the wedge body (12) deforms the outer surface of the frame (11) at least regionally outwardly.