Abstract: A temperature responsive switch includes a housing, an actuator arm for movement in response to temperature conditions, a movable contact, and an adjustable contact connected to a auxiliary terminal for completing an auxiliary circuit. The movable contact engages and disengages the auxiliary contact to cycle a first element on and off in response to exceedingly large temperature swings a specified location, and also engages a stationary contact to complete a main circuit and cycle a different electrical element on and off in response to relatively modest changes in temperature changes at the same specified location.

Abstract: A method for controlling an electronically commutated motor (ECM) using an air moving system including a controller and an interface board, the interface board electrically coupled to the controller. The ECM electrically coupled to the interface board. The ECM includes a motor controller having an ECM program and the interface board includes a mode signal circuit and a tap signal circuit. The method includes transmitting control signals to the interface board, translating the signals into signals suitable for controlling the ECM, and operating the ECM based on the translated signals.

Abstract: A gating system for vertical die casting of a squirrel cage rotor includes an upper end ring cavity, a lower end ring cavity, and a plurality of passages in fluid communication with the upper and lower end ring cavities for forming rotor bars. A gate is radially distanced from the passages, and molten metal is injected into the lower end ring cavity and fills the lower end cavity before filling the passages. The passages are therefore filled at approximately the same time and rate until the passages are full and the upper end ring cavity fills with molten metal.

Abstract: A fan assembly includes a vibration damping system to reduce induced vibrational energy generated as a result of fan motor operation. The vibration damping system includes a plurality of arms and damping material. The vibration damping system arms extend between a fan motor housing and a shroud assembly disposed circumferentially outward from the fan motor housing. The damping material is attached to an end of each of the vibration damping system arms and connects each arm to the shroud assembly. The damping material absorbs induced vibrational energy generated by fan motor operation.

Abstract: Systems, methods and apparatus for winding conductive wires for a stator of an electric motor. In one embodiment, a hysteretic tensioning apparatus is utilizing to substantially stabilize tension in a conductive wire supplied to a winding machine. The hysteretic tensioning apparatus includes a support member, a brake member, and four idler arms. The brake member is rotatably mounted to the brake member and configured to engage the conductive wire. The idler arms each are spring mounted to the support member and also are configured to engage the conductive wire. The conductive wire is extended across the support member so that it extends between adjacent idler arms and the brake and is inserted into the winding machine.

Abstract: Methods and control systems for improving performance in an air filtration system are disclosed. The method includes monitoring performance of a blower motor in the air filtration system and adjusting blower motor torque based upon a measured airflow or a measured static air pressure within the air filtration system.

Abstract: A power supply booster module for a programmable logic controller system replaces the primary power supply for a number of modules within the system. The power supply booster module allows high power consuming or highly complex modules to be used within a programmable logic controller system. The power supply booster module eliminates the problems present in prior programmable logic controller systems where the primary power supply could not output enough current to adequately power all of the system modules or modules that have a high power requirement.

Abstract: A rotor mount assembly, located between a rotor shaft and a plurality of magnetic elements, resiliently damps vibrations induced from the plurality of magnetic elements. The rotor mount assembly includes a first resilient ring, a second resilient ring, and a laminated spacer. The laminated spacer includes laminates from a stator core center punch. Both resilient rings include an inner metal insert which, in one embodiment, comprises laminates.

Abstract: A refrigeration control system containing a chamber in a fresh food compartment of a refrigerator. In one embodiment, a fan motor is positioned between an evaporator and the chamber. The fan motor speed or torque is adjusted to control the volume of cold evaporator air blown into the chamber. The rate of air flow to the chamber adjusts the temperature of the chamber.

Abstract: A computer-implemented method for evaluating tool performance is described which includes maintaining tool history data in an electronic memory, updating the tool history data with tool servicing data, determining from the tool history and servicing data a predicted tool remaining useful life, and displaying the predicted useful life on a computer output device. Average tool data is compared to tool benchmark data to determine tool efficiency. Tool servicing, performance and efficiency data are maintained in a spreadsheet format. Data entered into one spreadsheet is used to update a plurality of spreadsheets. The spreadsheet format allows manufacturers to keep abreast of tool performance over time and in a plurality of locations and to anticipate tool rebuild and replacement requirements.

Abstract: A bearing system includes a housing with first and second relief cuts, and a bearing assembly that includes an inner race and an outer race. An adjust screw contacts a preload spring positioned adjacent the outer race. The preload spring exerts a force on the outer race. The outer race includes a first and second edge, and a connecting portion. The first and second edges are positioned adjacent the first and second relief cuts respectively. The connecting portion contacts a bearing bore surface while the first and second edges of the outer race do not contact the bore surface.

Abstract: A method of adjusting speed and torque of a dynamoelectric machine is disclosed. The machine includes a main winding, and a divided winding each configured to generate a plurality of poles. The method includes the steps of energizing the main winding and controlling the amount of electromagnetic flux at each pole.

Abstract: During coiled hose and spring operations, a sheath reduces entanglements within a workstation and provides unrestricted access to manufacturing and assembly line pneumatic tools and equipment. The sheath includes a first end, a second end, and a body extending therebetween. The first and second ends are secured to a coiled device. The body defines a cavity sized to receive a portion of the coiled device therein. The sheath installs easily, is reliable, and is resilient to entanglements induced by coiled devices.

Abstract: A method is described for measuring a plurality of line voltages using a measurement circuit, the method including the steps of reducing each line voltage over a first impedance; providing a second impedance between each of the reduced voltages and a measurement circuit common reference point; coupling the common reference point to a voltage line N using a third impedance; and determining line voltage values using measurements of the reduced voltages. The above-described method provides impedance between voltage line N and measurement electronics and thus prevents transient voltages from entering the measurement circuit.

Abstract: An interface module includes a high density analog interface (HAI) for electrical interconnection between a programmable logic controller (PLC) and an analog to digital converter (ADC) or a digital to analog converter (DAC). The HAI includes a single application specific integrated circuit having a data scaling function block, a diagnostics function block configured to verify functionality of said scaling function block, a self-calibration function block configured to compensate for drift in said ADC, and a shared interface function block configured to electronically connect said module with a programmable logic controller (PLC).

Abstract: A cast end shield includes an opening extending therethrough and an insert at least partially embedded within the end shield at the opening. The end shield also includes a plurality of slots extending to the insert. In one embodiment, the insert is a substantially circular steel insert ring concentric with the opening and oriented such that an inner diameter of the insert ring is exposed from the end shield.

Abstract: A method for facilitating the reduction of transmitted motor noise using a mounting system in a frame. The mounting system includes a motor assembly having an end bell, a mounting bracket including a brace, a plurality of attachment openings, a plurality of leaf springs attached to the brace and an anchor device attached to each leaf spring. Each anchor device includes a fastener opening and a grommet. The leaf springs and grommets are configured to filter and damp noise transmitted from the motor to the frame.

Abstract: A circuit board protection system includes a circuit board including at least one edge, an enclosure used to encapsulate the edge, and a seal. The seal encapsulates the edge and prevents liquid from contacting the edge. Accordingly, the circuit board is protected from liquid infiltration at the edge of the board. Additionally, a method for protecting a circuit board, including at least one edge, in a board enclosure includes applying encapsulating material to at least one of the board enclosure and the edge, and positioning the circuit board in the enclosure such that the edge is encapsulated.

Abstract: A service entrance barrier for a load center that includes a housing and a service entrance having at least one branch fed main breaker electrically connected to branch feed lines. The service entrance barrier is securable to the load center housing to prevent human contact with electrically energized parts located in the service entrance of the load center. The service entrance barrier includes a main body portion, at least one mounting leg extending from the main body portion, a protection tab extending from said main body portion, and a non-conductive sleeve encompassing the protection tab.

Abstract: An electronically commutated motor assembly permits a user to select discrete operating speed options to operate an electronically commutated motor. The assembly includes a motor, an input/output unit electrically connected to the motor, a connector and board and a microprocessor. The connector and board includes an electrically erasable programmable read-only memory (EEPROM), a plurality of low voltage signal connections for programming the EEPROM, and a plurality of speed signal connections for selecting an operating speed for the electronically commutated motor. The low voltage signal connections permit the EEPROM to be programmed with speed tables containing schedules of operating speeds.