Abstract: A method of operation of an Advanced Cheng Cycle heat engine comprising: (a) initializing start conditions in the gas turbine engine and the heat recovery steam generator with the control system; (b) setting the control valve means for idle flow condition of the heat engine; (c) pressurizing the drum with the compressed gas source to approximately the desired operating pressure of the heat recovery steam generator; (d) starting the gas turbine engine from idle to full load as limited by maximum allowed turbine inlet temperature; and (e) throttling second working fluid flow rate with the control valve means and shutting off the compressed gas source, after the sensor system indicates that heat recovery steam generator pressure is higher than compressor discharge pressure.

Abstract: A Cheng cycle, dual-fluid heat engine comprising a compressor for compressing a first working fluid, having a compressor outlet; a combustion chamber in fluid communication with the compressor outlet; a turbine having an inlet in fluid communication with the combustion chamber for performing work by expansion of working fluid, and a turbine exhaust. The engine also has a heat recovery exchanger coupled to the turbine exhaust for heating thereby, having a heat recovery exchanger inlet and an outlet for heating a second working fluid; and an injector for introducing heated second working fluid from the heat recovery exchanger into the turbine. The engine has a coolant inlet port for introducing coolant having a temperature less than the first working fluid temperature at the compressor outlet, to at least one of turbine nozzles and blades in the turbine.

Abstract: A load base (10) with a housing (12) having at least one channel (14) for slidable insertion and capture of a wire lug (38), a tongue (26) having a cantilever structure attached to the housing (12) proximal the channel (14), which blocks removal of the lug (38) from the channel (14). The housing (12), channel (14) and tongue (26) are preferably integrally formed. The wire lug (38) has a unitary lug body (40) with a wire aperture (42) for receipt of a cable (34) and a platform (46). A fuse clip (48) is directly attached to the wire lug platform (46).

Abstract: A shoe organizer for organizing shoes in stacked, over-and-under pairs along a horizontal shelf or one or more pairs vertically in string-like fashion. The shoe organizer comprises first and second shoe holders which can function as shoe trees, each having a heel piece and a toe piece; a cross bridge connected to the shoe holders; and first and second hook-retaining formed holes on opposite ends of the shoe organizer for attachment of a plurality of shoe organizers to each other in string-like fashion. Vertical stringing of a plurality of shoe organizers is accomplished by inserting one end of a double ended hook into a formed hole of one shoe organizer and inserting the second end of the double-sided hook into a formed hole of a second shoe organizer. The top-most hook end may be hooked over a closest hanger rod or the like.

Abstract: A tool (10) for insertion or removal of generally elongated fuses (32), which has a body portion (12) for capture of the fuse (32) about its circumference, including a base (14), a foot (16), a side member (18) and a top (20). The tool (10) may have axle stubs (17) that are rotatively engageable in apertures (54) defined by fuse holder pan well (52). The tool (10) also has a tab (b 22) attached to the body (12) for rocking the fuse (32) about a fulcrum axis defined by contact of the foot (16) with the floor (36) of a fuse holder pan or by rotation of axle stubs (17) within apertures (54) defined by the sidewalls (56). The tool (10) may have a positioning rib (24) attached to the body (12) for limiting axial movement of the fuse (32) relative to the tool (10). The top ( 20) may serve as a cover for a fuse holder pan (34).

Abstract: An electrical enclosure (10) having a box (12) having an open side, a trim panel (20) for covering the box open side, a support tab (22) and an aperture for receiving the support tab (22). A portion of the aperture edge may be formed by a flange edge (18). The support tab (22) supports the weight of the trim panel (20) during installation of trim panel fasteners (28) into holes (16, 24) formed in the box (12) and trim panel (20), respectively. The support tab (22) may be formed simultaneously with the trim panel fastener hole (24) in a stamping operation.

Abstract: An electrical switch assembly has an L-shaped housing with a base, an endwall and sidewalls which may be molded as a single piece. The endwall is provided with receiving slots for at least one metal plate serving as an arcing plate and with a central guide channel for a plunger arm which carries a contact blade. Stationary contact assemblies which have contact clamps are fit into receiving channels formed in the base and held down by hold-down rails alongside the channels. The bottoms of the channels include anti-turn channels for the heads of lug screws to facilitate assembly. A cover, which also has a centrally located guide channel for the plunger arm is fastened to the sidewalls. A baffle extends from the outer surface of the cover between the stationary terminal assemblies. A side shield extends from one sidewall.

Abstract: A fuse ejector (10) for ejecting fuses from engagement with fuse clips (46) including a rotatable axle (12) with at least one female end portion (16) that is rotatively engageable with a male boss (52) or a male end portion (14) of another ejector if the ejectors are oriented in tandem, such as in a ganged fuse clip chamber assembly. The ejector (10) has a handle (32) and a cam portion (36) for contact within translation of a fuse upon rotation of the axle (12), so that the fuse is ejectable upon handle actuation. The female end portion (16) may include an angular ring (18) having a cut-out portion (22) for lateral engagement with a male boss (52) or the male end portion (14) of another ejector (10). Methods for assembly of a fuse ejection system.

Abstract: A multi-phase switch assembly (10) has a base (12) and an operating mechanism (14). The base (12) and operating mechanism (14) are formed to fit together as an integrated unit by sliding engagement of the base (48) of framework (32) between bosses (30,31) of the base (12) of the switch. Fastener holes (74,76) extend through both the base (12) of the switch and the operating mechanism (14) so that the entire switch assembly (10) can easily be mounted as a unit.

Abstract: The invention consists of a box-shaped electrical assembly with a frontal cover and screw connections for the connection of leads accessible from the front. The cable lead openings to the screw connections are located in an open-to-the-front, longitudinal channel located at the front of the assembly. The cover acts as a labeling plate and also functions as a cover for the longitudinal channel and for the screw connections. The screw connections electrically connect an external cable to a plug unit subassembly. The plug unit is connectable with a circuit board enclosed within the assembly. The plug unit is provided with a pivotal axis, and is adapted for connecting to a plug strip that is mechanically and electronically connected to the circuit board.

Abstract: A primary disconnect assembly for a circuit breaker. The assembly includes a plurality of contact fingers for engaging the terminals of a bus bar assembly. The terminals and fingers are configured such that the terminals each include depressions adapted to accept the contact portions of the contact fingers. This configuration provides at least two contact locations between each contact finger and terminal. Additionally, this configuration increases the force required to slide the fingers relative to the terminals.

Abstract: A mechanism for accumulating and storing mechanical energy, wherein the energy is used to close the primary contacts of a circuit breaker. The energy can be input to the mechanism manually or by means of a motor. The mechanism includes a series of linkages which function to utilize the energy to close the primary contacts. These linkages also function to maintain the closing force upon the primary contacts, while also functioning to allow rapid contact opening when desired.

Abstract: A low voltage electrical power circuit breaker in which an actuator in the form of a pushrod controls the separation of arcing contacts by an actuating mechanism, a force-actuated mechanical latching assembly is interposed between the pushrod and the actuating mechanism. Under fault current conditions, the current-induced force tending to open the contacts exerts sufficient force on the latch assembly to unlatch it, thereby permitting the contacts to open freely on their own, without waiting for the operation of the actuating mechanism.

Abstract: A manipulator head (15) equipped with a nozzle (15a), a tool or a probe is connected to a first flexible tube (16) which is wound on a drum (18) which is mounted at a first service opening (13). The head (15) is inserted through the first service opening (13) into a tube lane or a tube column of the tube bundle of a heat exchanger and drawn out of a second service opening (14). There the head (15) is connected to the free end of a second flexible tube (17) which is wound onto a second drum (19) at the second service opening (14). By activating one of the two drums, the head (15) is moved through the heat exchanger along the tube lane and/or the tube column. If the head (15) is equipped with a nozzle (15a), the nozzle is supplied through a line with cleaning fluid under pressure, at least through the first flexible tube (16) and the respective drum (18).

Abstract: An apparatus for monitoring alternating currents and providing a signal representative of the current. The signals are rectified by a modified full wave rectrifier to provide a power source, a positive signal associated with the positive range of the current, and a positive signal associated with the negative range of the current. The two positive signals serve to preserve the polarity information associated with the current being monitored. The apparatus also provides for combining the negative signals to produce other signals useable by a microprocessor and an analog logic circuit.

Abstract: A primary disconnect assembly for a circuit breaker. The assembly includes a plurality of contact fingers for engaging the terminals of a bus bar assembly. The terminals and fingers are configured such that the terminals each include depressions adapted to accept the contact portions of the contact fingers. This configuration provides at least two contact locations between each contact finger and terminal. Additionally, this configuration increases the force required to slide the fingers relative to the terminals.

Abstract: The improved transvenous implantation method of the present invention involves entering a vein of a patient, translating through the vein to the patient's cardium atrium, anchoring onto the atrial lateral wall, puncturing the atrial lateral wall and forming a hole therein, exiting the atrium through the hole to the pericardial space and inserting the object into the pericardial space. The present invention also includes a method for the transvenous repair of a wound in the atrial lateral wall.