Abstract: A steerable and rackable electrical apparatus system including a wheeled rackable electrical apparatus (10). The system allows steerable movement of an unracked apparatus (10) that has been removed from a switchgear cabinet. The system includes a device (20) with a lifting bracket (22) selectively attachable and detachable from the electrical apparatus (10); and a steerable, wheeled, self-supporting lifting device (30) for lifting a portion of the electrical apparatus (10) to a lifted position and for supporting weight of the lifted apparatus (10) without operator lifting effort. The lifting device (30) may be screw jack with a castered wheel (38) that is coupled to the lifting bracket (22).

Abstract: An auxiliary resolver position tracking (RPT) system for an industrial robot includes a resolver excitation and monitoring system which is powered by an uninterruptable power supply which includes a battery. The RPT system generates trapezoidal excitation pulses for the resolvers in the robot when no external excitation signal is applied, for example when the robot is shut down. Since there is relatively little motion to be detected in these instances, the RPT system switches between a slow position sampling rate, when no motion is detected, and a fast sampling rate when motion is detected. When operating on battery power, the RPT only switches to the fast sampling rate when motion is detected. To ensure that no motion data is lost when the system switches back to the slow sampling rate, the high sampling rate is maintained for a time sufficient to capture any residual motion of the robot.

Abstract: A circuit breaker/surge arrestor package for plug-in installation in the space of two standard one-inch openings in a contemporary residential load center. The electrical and thermal characteristics of the components are selected such that a threshold of a substantially continuous current through a Metal Oxide Varistor in the surge arrestor causes the circuit breaker to trip magnetically before being able to trip thermally.

Abstract: A process and solution is disclosed for removing resin bleed from leads of an encapsulated electronic component in which the component is positioned in an aqueous bath having dissolved therein glycerol and a phosphate salt selected from the group consisting of an alkali metal or ammonium phosphate, polyphosphate or pyrophosphate salt. The component is cathodically connected in an electric circuit enabling electrical current to pass through said component.

Abstract: A low voltage electric power monitoring and circuit breaker system includes two processors. The first processor activates the circuit breaker when an overcurrent condition is detected and the second processor monitors the current sensed by the first processor and activates the circuit breaker for overcurrent conditions which should have caused the first processor to activate the breaker. If a current of this magnitude is detected, the second processor activates the circuit breaker as a backup protection for the first circuit breaker.

Abstract: The system includes a first module having a paint mixing and storage tank at a list location remote from any paint application point of use. The first module includes a remote pump for delivering paint at a first pressure from the tank to a local atmospheric pressure receptacle disposed at a second location in general proximity with paint application points of use. Excess paint delivered to the local receptacle is returned to the tank at the remote location. A secondary module includes a local pump to draw paint from the local receptacle for discharge into a main paint supply header at a third pressure. At least one separate and independent branch paint supply line is taken from the header for each spray booth, or groups of spray booths if located physically in close proximity to one another. Each of the branch lines is returned separately and independently through a back pressure control valve to the local atmospheric pressure receptacle.

Abstract: An orifice fitting with an orifice plate centered in the flow passage of an orifice fitting via direct contact between a cradle and the orifice plate. The orifice plate is centered via the use of an orifice plate carrier having two channels on its downstream side and two slots located in the bottom portion of the seat, which is located on the plate carrier's upstream side. The plate fits into the seat and a bottom portion of the plate's peripheral edge protrudes through the slots. A cradle having locating surfaces fits through the channels in the orifice plate carrier and firmly holds the orifice plate against the orifice plate carrier. The cradle can be positioned and then secured in place by two adjustable set screws and a stem piece of the cradle. Once the orifice plate has been centered via the positioning of the cradle, the stem piece of the cradle and the set screws can be welded into the body of the orifice fitting.

Abstract: A pivoting lower contact arm arrangement and a circuit breaker including the arrangement. The pivoting lower contact arm arrangement includes a pivoting lower contact arm and a biasing arrangement. The biasing arrangement maintains the contact arm in an operating position with a first force, and biases the arm from a blown-open position toward the operating position with a second force. The first force is greater than the second force to provide increased separating speed when the pivoting lower contact arm blows apart from a pivoting upper contact arm of the circuit breaker and moves from its operating position. The biasing arrangement also variously provides magnetic shielding and coupling between the pivoting lower contact arm and other current carrying components of the circuit breaker. The magnetic shielding enhances the blow-apart forces between the pivoting upper contact arm and the pivoting lower contact arm.

Abstract: A distribution switchboard cubicle has upper and lower ring channels; left and right corner posts attached to the ring channels for forming a support skeleton for a front face of the cubicle; and left and right intermediate posts attached to the ring channels for forming in conjunction with a corresponding corner post and the ring channels a support skeleton for left and right sides of the cubicle. First and second vertically aligned, selectively reconfigurable cubicle sections are defined within the cubicle. The first cubicle section includes at least one generally horizontally oriented mounting member for connecting each pair of corner and intermediate posts on the left and right sides of the cubicle. Left and right breaker mounting angles are connected to each respective horizontally oriented mounting member for mounting a first electrical apparatus thereto.

Abstract: An improved chain conveyor includes drive sprockets for the chain, and second sprockets for guiding the pallets between the upper and lower runs. The second sprockets rotate at a different rate of speed than the drive sprockets to adjust for misalignment between the pallet and the second sprocket as the pallet approaches the turns. The pallet includes an alignment groove which connects onto a link on the chain to properly position the pallet relative to the chain, and a plurality of teeth which are then engaged by the second sprocket. The second sprocket and the alignment groove thus provide plural positive engagement points between the pallet and the conveyor as the pallet moves between the upper and lower runs. This is an improvement over prior art systems which relied on frictional contact for such turning. In a further feature of the present invention, the chain and pallet are dimensioned such that the pallet is unlikely to jam as it is being turned.

Abstract: A squeegee drive structure for a solder paste printing machine. The circuit board and screen are aligned in the machine. The squeegee drive structure is mounted on the machine independently of the screen to which the paste is applied. The drive structure which supports the squeegee is adapted for linear movement away from the solder paste application area and upward pivotal movement in order to provide easy access to the squeegee.

Abstract: A spring-powered operator controls a high power circuit breaker by discharging an energy storing spring to rapidly close the circuit breaker against the bias of its internal opening springs, and latches to keep the circuit breaker closed until the receipt of a trip command which unlatches the operator and allows the circuit breaker to open. In response to discharging the energy storing spring, the operator immediately starts charging again in order to prepare for another closing of the circuit breaker. The operator uses a relatively low-power motor to drive a ratchet wheel that indirectly compresses the energy storing spring through a crank mechanism and, upon a release of the spring, uses a cam driven by the spring to act directly on a lever coupled to the breaker. The operator has a low number of parts and is able to close a circuit breaker particularly rapidly and reliably.

Abstract: A racking mechanism (30) for switchgear cubicle (20) draw-out units (24) including a base (39); and a drive screw assembly (44) attached to the base (39) including a screw block (36) translated by rotation of the screw. The screw block (36) is adapted for selective coupling to a draw-out unit (24). Drive surfaces (72) are constructed on the drive screw assembly (44). A biased racking shield (52) which surrounds at least a portion of the drive surfaces (72) in a first position is translatable to a second position by exerting counter-biasing force against the racking shield, in order to expose a portion of the drive surfaces (72). A crank assembly (76) having a socket portion (80) is engageable with the drive surfaces (72) when the racking shield (52) is translated to its second position, in order to rotate the drive screw (44).

Abstract: A safety switch is provided with an auxiliary contact that is actuated by the heel of the bail. The heel actuation enables the auxiliary switch to be easily installed and wired and enables the same actuator and bracket to be used for varying sizes of bails.

Abstract: A lay-in lug (10) with a lug body (12) having a pair of generally parallel, opposed breaker stabs (14, 16) that are engageable in line contacts (44, 46) of a main circuit breaker (48) and securement flanges (20, 22) for attachment of the lug body to an electrical power distribution device. The lug (10) also has a lug cap (30) attachable to the lug body (12) for capture of an electrical cable (42). The lug cap (30) and lug body (12) are preferably formed by extrusion.

Abstract: A vibration reduction assembly for isolating the top cover from the machine, for use in combination with a dynamoelectric machine having a cover for guiding air into and out of the machine while protecting the machine from airborne water and dirt. The vibration reduction assembly comprises a plurality of spaced neoprene pads provided between the cover and the machine, the pads of a density and size selected to obtain low transmissibility and amplification of vibration caused by the machine thereby reducing vibration of the machine; a plurality of closed cell foam rubber strips positioned between adjacent ones of the plurality of neoprene pads, the strips for filling space between the cover and for protecting the machine from incident atmospheric precipitation and dust. The cover is affixed to the machine with a plurality of bolts, each bolt engaging a neoprene washer and a neoprene sleeve to eliminate metal to metal contact.

Abstract: A blade-type chain tensioner constructed from a plastic shoe and a blade spring. The shoe is slightly arcuate and has a pocket along its concave side. At each end of the pocket is a cavity. The blade spring is substantially more arcuate than the shoe and is rectangular. The blade spring is further dimensioned to allow each end of the blade spring to be mounted in the pocket having an end in each cavity at the end of a shoe. Through this configuration the blade spring is mechanically interlocked with the shoe without the use of fasteners or cutouts. The blade spring places a load on the shoe and causing the shoe to creep at an elevated temperature and thereby provide tension to a chain.

Abstract: An article tracking system includes a delivery zone transmitter associated with at least one physical article delivery location for transmitting data identifying that physical location, a zone detector carried by at least one manually operated article delivery vehicle for detecting the physical proximity of the vehicle to the delivery zone, and a signal device operatively associated with the zone detector for outputting a signal indicating the physical proximity of the vehicle to the delivery zone. Therefore, an operator of the vehicle is informed that the vehicle is in the proper delivery zone for delivery of an article.

Abstract: A computerized monitoring system is used for monitoring the operation of web presses. The computerized monitoring system includes a recorder for automatically recording log entries for each of the respective web presses. The log entries specify the occurrence of particular events and also specify the time at which such events occurred. The computerized monitoring system additionally includes a processor that generates a daily press record for at least one of the web presses. The daily press record summarizes activity of a press for a time frame including the waste, gross and net production. Lastly, the computerized monitoring system is provided with a user interface such as a video display or press for displaying the daily press record. The computerized monitoring system has the capability of operating in real time.