Abstract: A torsional vibration damper is integrated into a rotating electrical machine. A rotatable assembly of the electrical machine includes a rotor core pack having a first end and a second end. The integrated torsional vibration damper consists of a torsional elastic coupling and a torsional elastic damper and provides mechanical damping. The integrated torsional vibration damper is mounted to the rotatable shaft of the electrical machine by a flange. The rotor core pack is mounted at the first end to the integrated torsional vibration damper by suitable structure members such as a mounting flange and is not fixedly mounted directly to the rotatable shaft. In the case where the rotor core pack is cooled by circulating coolant fluid (e.g. MIDEL) then the integrated torsional vibration damper may be a viscous damper that uses the coolant fluid as a viscous working fluid.

Abstract: A method for material removal to a predetermined removal depth from a workpiece employs a laser beam consisting of one or more sub-beams, each of the latter having a defined beam axis. The axis of the laser beam or the individual axes of the sub-beams are guided along a removal line at a predetermined travelling speed and the laser beam has a predetermined spatial energy flow density that defines a Poynting vector S with a value I0f (x) and a direction s, the spatial energy flow density creating a removal face with an apex formed by the leading part of the removal face in the removal direction and the face, creating a removal edge.

Abstract: A switch machine that includes a first relay having first normally open contacts and first normally closed contacts provided in the normal motor connection path and a second relay having second normally open contacts and second normally closed contacts provided in the reverse motor connection path. The normally open and closed contacts of each relay are associated in pairs and the first relays are structured such that each normally closed contact and the corresponding normally open contact cannot be simultaneously closed. Also, a method of protecting a motor of a switch machine that includes integrating a current being drawn by the motor and opening a motor circuit that includes the motor if the integrated current exceeds a threshold.

Abstract: Virtual connection route selection apparatus and techniques are disclosed. At a communication traffic routing apparatus, metric information associated with multiple different routes for a virtual connection, such as a PseudoWire, toward a destination is collected. The metric information may be collected from one or more remote route computation elements capable of computing routes for virtual connections between the routing apparatus and other routing apparatus over an underlying communication system, or during actual establishment of the virtual connections, for example. An initial or re-optimized route for a virtual connection can then be selected at the routing apparatus based on the collected metric information. In some embodiments, although the virtual connection routes are paths computed by Path Computation Elements (PCEs), actual path selection decisions are distributed to routers.

Abstract: A protective tube which is slit in the longitudinal direction is provided with a closing element that maintains the longitudinal edges along the slit on a plane relative to one another. The closing element is a separate profiled piece, of which the cross-section has such a shape that a central web of said profiled piece is inserted between the longitudinal edges of the tube. The top face of the tube is covered by the profiled piece along the longitudinal edges, and the internal faces of the tube are supported by the profiled piece. An auxiliary tool is provided for closing such a protective tube and inserting the closing element in the tube.

Abstract: A pet feeder includes a food container. A base supports the food container and includes a food storage area for receiving food from the food container. The base also includes a bowl for allowing a pet access to food. The bowl is disposed adjacent to the food storage area. The pet feeder further includes a ramp adapted to be inserted into the food storage area for directing food from the food container to the bowl.

Abstract: A shutter assembly is provided for an electrical system including at least one withdrawable electric apparatus, such as a circuit breaker, and an electrical bus member. A protruding structure of the circuit breaker is removably coupled to a corresponding primary contact of the electrical bus member to electrically connect the circuit breaker and the electrical bus member. The shutter assembly includes a pair of cover members that are pivotably movable between a first position in which the corresponding primary contact of the electrical bus member is isolated, and a second position in which the circuit breaker is connected with the primary contact and the electrical bus member.

Abstract: An area electric power system includes a number of direct current power sources, and a number of inverters operatively associated with the number of direct current power sources. Each of the number of inverters is structured to provide real power and controlled reactive power injection to detect islanding. An output is powered by the number of inverters. A number of electrical switching apparatus are structured to electrically connect the number of inverters to and electrically disconnect the number of inverters from a utility grid. A number of devices are structured to detect islanding with respect to the utility grid responsive to a number of changes of alternating current frequency or voltage of the output.

Abstract: An electrical enclosure includes a housing having a first end, an opposite second end, and a plurality of sides disposed therebetween to define an internal volume; an electrical busway having a plurality of electrical bus members; a plurality of phase-to-phase arc length limiters, each of the phase-to-phase arc length limiters being electrically connected to a corresponding one of the electrical bus members, each of the phase-to-phase arc length limiters having a first edge and a second edge, the first edge establishing a first gap to an adjacent one of the phase-to-phase arc length limiters; and a phase-to-ground arc length limiter electrically connected to the housing, the phase-to-ground arc length limiter having a number of members structured to attach an arc, each of the number of members having a number of arc attachment portions establishing a second gap to the second edge of the phase-to-phase arc length limiters.

Abstract: An inverter filter is for a plurality of phases. The inverter filter includes a node; a differential mode filter including for each of the phases a first terminal, a second terminal, an inductor electrically connected between the first terminal and the second terminal, and first capacitor electrically connected between the inductor and the node. The inverter filter also includes a third terminal structured to be grounded, and a common mode filter. The common mode filter includes a resistor, and a second capacitor electrically connected in series with the resistor between the node and the third terminal.

Abstract: An improved bellows for use in a vacuum interrupter includes a plurality of corrugations extending along a central axis, with each convolution including a convolution element and a support element. Each convolution element has a convolution length along the central axis and a convolution height perpendicular to the central axis. In a first embodiment, the convolution height of the various corrugations increases between two ends of the bellows. In an embodiment, the bellows height increases gradually between the two ends, and in another embodiment the convolution height increases in a stepwise fashion. The convolution length can likewise change gradually or stepwise between the ends of the bellows. The convolution height alternatively can remain the same throughout a bellows, but the convolution length may change.

Abstract: A method of modifying the force of contraction of at least a portion of a heart chamber is provided. A non-excitatory electric field of given duration is applied, at a delay after an activation of the heart, which increase the force of contraction by at least 5%. Apparatus is also provided for pacing with hemodynamic improvement. Circuitry applies an extended pacing signal to electrodes to pace the heart, the extended pacing signal having an overall duration greater than 8 ms from a time of initiation of application of that portion of the signal that initiates action potential propagation. The signal includes a train of biphasic pulses having pulse durations of at least 1 ms, and the signal has an amplitude that is at least three times as great as a threshold for pacing the heart and that is sufficient neither for cardioversion nor for defibrillation. Other embodiments are also described.

Abstract: A system includes an electrical enclosure having an inner volume and a door structured to open to expose the inner volume and structured to close to enclose the inner volume. A racking mechanism is disposed in the inner volume and includes a member movable in a first direction to a first position and an opposite second direction to a different second position. A network protector is carried by the racking mechanism and is movable thereby between a connect position in the inner volume corresponding to the first position of the member of the racking mechanism, and a test position in the inner volume corresponding to the different second position of the member of the racking mechanism. A control mechanism is structured to move the member of the racking mechanism between the first position and the different second position of the member responsive to a number of remote commands.

Abstract: A charging assembly for an electrical switching apparatus includes a cam shaft and including a number of cams. A latch lobe and a charging handle are coupled to opposing ends of the cam shaft. Each stroke of the charging handle pivots the cams a predetermined amount. A rocker arm includes a first portion cooperating with the cams, a second portion translating movement of the cams into movement of a stored energy mechanism, and a third portion cooperating with a close D-shaft having a close latch. A close prop includes a first end cooperating with the close D-shaft, and a second end including a roller that cooperates with the latch lobe. The close D-shaft pivots between latched and unlatched positions. The third portion cooperates with the close D-shaft to hold the close latch in the unlatched position until the charging handle has been pivoted a predetermined number of strokes.

Abstract: A gemstone micro-inscription system, comprising an energy source, a spatial light modulator, and a control, the control controlling a spatial light pattern modulation of the spatial light modulator, wherein the spatial light modulator exposes a photoresist on the gemstone, which selectively impedes an etching process to produce a pattern on the gemstone corresponding to the spatial light modulation pattern.

Abstract: A method of modifying the force of contraction of at least a portion of a heart chamber, including providing a subject having a heart, comprising at least a portion having an activation, and applying a non-excitatory electric field having a given duration, at a delay after the activation, to the portion, which causes the force of contraction to be increased by a least 5%.

Abstract: There is provided a caliper brake attachment tool which comprises: a supporting rod; a fixed part provided to one end side of the supporting rod capable of fixing an existing caliper brake; an applying part provided to the other end side of the supporting rod and applicable to a seat tube of the bicycle; and an engaging recess provided between the fixed part and the applying part in the supporting rod engageable with a bridge to connect a right-and-left pair of seat stays of the bicycle.