Abstract: A vacuum cleaner has a main body, a motor-driven fan unit, a printed circuit board for controlling the motor-driven fan unit and a housing encasing a portion of the printed circuit board. A heat sink of the printed circuit board extends through the housing from an interior of the housing to an exterior of the housing. The printed circuit board is disposed within the main body such that the heat sink is located in an air-flow path through the main body.

Abstract: A method and device for detecting damaging sub-harmonic frequencies in a power system, and recording data or initiating protective action. A microprocessor based sub-harmonic protection relay (S-PRO) monitors system voltages and currents from voltage and current transformers on the power system that may be present in the 5 Hz to 25 Hz frequency window. The user of S-PRO has full programming control to select bandwidths of frequencies or specific frequency components of the collected system voltages and currents. S-PRO can be user programmed to either detect the sub-harmonic power quantities and record them for future use in simulations or to initiate protective action. Protective action may include initiating output contact closure on the device to shut down equipment or to initiate corrective actions to prevent damage.

Abstract: An electrical control system for vehicles has a plurality of separate control modules which communicate via a communication bus and an operational program is installed in each of the modules so that all modules contain programming for the functions of each module. A programming and diagnostic system including a PC and a program connects into the bus so as to download the program from one of the modules for generating, modifying and viewing program logic steps using ladder logic which is then converted back Into an operating program format for communication to the modules. In addition, the status of the inputs and outputs of the modules of the apparatus can be displayed and forced using the programming and diagnostic system.

Abstract: An electrical control system preferably for vehicles such as a transit vehicle is arranged with a plurality of separate modules each receiving input from a series of inputs and each providing a series of outputs so that the modules combined receive inputs from all of the control, transducer and other input elements of the vehicle and the modules as a whole provide output to all of the controlled elements of the vehicle. The modules communicate between one another via a communication bus and an operational program is installed in each of the modules so that all modules contain programming for the functions of each module. A replacement module is generic and thus can contain any operational program and thus can be used for many different designs of the system. As supplied, the module may contain an existing program or no operational program if not yet programmed.

Abstract: A source for Molecular Beam Epitaxy (MBE) including an open-ended crucible and a removable orificed covered plate for covering the open end of the crucible, the cover plate having an encapsulated heater, preferably of Pyrolytic Graphite, which reduces orifice blockage.

Abstract: A sole construction for use with a boating shoe or the like comprises an outsole having a multiplicity of wave-like incisions in a traction area. The incisions are each in the form of a flattened sine wave and extend generally transverse to the longitudinal axis of the sole. A plurality of straight incisions intersect the wave-like incisions and extend substantially parallel to the longitudinal axis of the sole. The sole may further include inner and outer traction areas in which a plurality of incisions intersect wave-like incisions extending parallel to the longitudinal axis of the shoe, with the straight incisions extending substantially transverse to the longitudinal axis.