136results about How to "Minimize maintenance" patented technology

A battery management system is disclosed for control of individual cells in a battery string. The battery management system includes a charger, a voltmeter, a selection circuit and a microprocessor. Under control of the microprocessor, the selection circuit connects each cell of the battery string to the charger and voltmeter. Information relating to battery performance is recorded and analyzed. The analysis depends upon the conditions under which the battery is operating. By monitoring the battery performance under different conditions, problems with individual cells can be determined and corrected.

A deposition chamber for delivering gases to a substrate or wafer for processing of said substrate or wafer is provided. The injector is provided comprising an elongated member with end surfaces and at least one gas delivery surface extending along the length of the member and which includes a number of first elongated passages formed therein for received a gas. Also formed within the member are a number of thin distribution channels which extend between the first elongated passages and the gas delivery surface. In another embodiment, the injector further includes at least one second elongated passage formed therein for receiving an etchant species. Metering tubes may be inserted into each elongated passage and are spaced from the walls of said passages and extend between the ends. The deposition chamber includes at least one injector as described above; a plurality of vent blocks having end surfaces and at least one elongated external surface extending along the length of each of the vent blocks; and a support positioned beneath the injector and vent blocks, creating a deposition region there between. The vent blocks are positioned adjacent one on each side of the injector, and spaced from the injector to define exhaust channels there between for removing the gas.

Films having a microreplicated topography are prepared from contacting a microembossed pattern to a layer of film. When an adhesion interface is established between the layer of film and a supporting substrate, the topography of the film surface controls the performance of the adhesion interface. Articles having microreplicated film surfaces are also disclosed that have an advantage of providing microchannels for fluid egress for an effective period of time. Multiple microembossed patterns produce microreplicated film surfaces having both microchannels for fluid egress and pegs for improved film properties.

A light guide and various vehicular lamp assemblies using the same are presented herein. In one embodiment, the lamp assembly includes a light source, such as an LED module. A light coupler is operable to receive light from the light source, and distribute the light in a first direction. The light guide includes an elongated, curvilinear body with first and second longitudinal end faces, and opposing light-emitting and light-guiding surfaces extending between the two end faces on a respective side of the body. The first end face communicates with the light coupler to receive light therefrom. The light guide body transmits light generated by the light source along the longitudinal expanse thereof. The light-guiding surface includes an array of longitudinally-spaced optical grooves configured to refract light generated by the light source in a second direction. The depth of preselected optical grooves is varied along the length of the light guide.

A medium voltage controller for electrical equipment, such as motors, transformers, reactors, and capacitors, having an arc resistant cabinet, swaged internal electrical connections, a one-piece self-aligning withdrawable finger cluster, a pull-out instrument compartment, a load discharge device, cast fuse holders, disconnect switch, a switch illuminator, low power current transformers, and an optical temperature measuring system. The arc resistant cabinet relies on the pressure generated by an arc fault to provide the sealing action to contain the fault forces. The cabinet's rear panels are inside the cabinet and the panel lips mate to edges of the cabinet opening. The front doors each have a series of latching tabs along one side and a hinge along the opposing side. A dimple-in-a-dimple joint provides shear strength for panel joints. At the top of the cabinet is an exhaust vent.

The present invention is a screen frame and screen positionable in most window frames and door frames. The invented screen frame is comprised of four screen frame segments joined together at corners to form a generally rectangular or multi-sided screen frame. Corner joint inserts are inserted in each corner of the four screen frame segments and the inserts are spot welded to adjoining screen frame segments to provide a sturdy and rigid screen frame. The screen frame segments are preferably stainless steel extrusions having two parallel flanges extending from a generally square shaped hollow body. An alternative construction of the screen frame is a continuous extruded segment that is notched at certain locations for bending and forming into a continuous screen frame having one junction requiring spot welding. A metal, preferably stainless steel screen is secured in the screen frame by spot welding the screen between the screen frame flanges of the screen frame segment. Stainless steel support pins are used to secure the screen frame enclosing the screen in a window frame casing. The screen frame and screen provides a long-lasting, corrosive resistant, and rigid frame and screen for positioning in window or door frames which withstand damage from intruders, projectiles, and environmental stresses.

A system for measuring the power or energy loss in a photovoltaic array due to soiling, which is the accumulation of dust, dirt, and/or other contaminants on the surfaces of photovoltaic modules, comprising: a pair of photovoltaic reference devices placed within or near the photovoltaic array and co-planar to the modules comprising the array, wherein one reference device is a module similar to those of the array and is allowed to accumulate soiling at the natural rate, and wherein the second reference device is a module or a cell and is periodically cleaned; and a measurement and control unit which measures and compares the electrical outputs of the soiled reference device and the clean reference device in order to determine the fraction of power lost by the soiled reference module due to soiling.

Rewinding method and rewinding machine of a paper web (1) for making a log (2a) comprising a feed roller (3) for feeding the web (1) and a winding cradle (4) in which a log (2a) is formed winding the paper web (1) about a core (20). The latter is supplied into the cradle (4) by introduction means by a loading unit that draws the cores (20) from a chute guide. Upstream from the feed roller (3) a perforation roller (11) is provided that acts in combination with a counter-roller (12) to make a plurality of transversal tear lines (15′) on the paper web (1) forming a plurality of panels (16) connected to each other united by the tear line. Upstream from the means for introducing the core (20), furthermore, a gluing means is provided (50) for application of a measured amount of glue (55) on a determined portion of the paper web (1), in particular upstream from (Ia), down-stream of (Ib), or bridging the tear line or clean cut (15). Such lines are made by cutting means, which make either a tear line or clean cut (10″), in coincidence or direct vicinity with the gluing means for applying the glue (50, 10′). The gluing means (50) can, for example, provide a pad (10′) that receives the glue by a gluing roller (51).

A system for measuring the power or energy loss in a photovoltaic array due to soiling, which is the accumulation of dust, dirt, and/or other contaminants on the surfaces of photovoltaic modules, comprising: a pair of photovoltaic reference devices placed within or near the photovoltaic array and co-planar to the modules comprising the array, wherein one reference device is a module similar to those of the array and is allowed to accumulate soiling at the natural rate, and wherein the second reference device is a module or a cell and is periodically cleaned; and a measurement and control unit which measures and compares the electrical outputs of the soiled reference device and the clean reference device in order to determine the fraction of power lost by the soiled reference module due to soiling.

A micro-fluid ejection head has fluid ejection elements formed as thin film layers on a substrate. Fluid flow features on the substrate channel fluid from a fluid source to ejection chambers surrounding the ejection elements. A pump on the substrate circulates the fluid from the source to the ejection chambers and back again to the source. The flow refreshes the fluid in the chambers to minimize deleterious effects of evaporation. A controller coordinates the flow rate of the pump and other variables to optimize system productivity. Other embodiments contemplate pump locations, pump types, pump enumeration, and fluidic features, such as pathways, diffusers, chokes and dimensions, to name a few.

A fuel cell APU system comprising a plurality of fuel cell modules connected in parallel. Each module includes a local controller connected to a master controller that coordinates the modules to achieve a desired power output at any given time. Each module is operated within an output range to maximize efficiency of the system. When load demand on a first module exceeds the desired output range of the module, an additional module is brought online in parallel with the first. As the load increases further, additional modules are brought online in cascade fashion to permit all modules to be operated efficiently. If a module is disabled, it is automatically switched out of service and replaced by a standby module. The master controller keeps track of the total operating time of each module and varies the sequence in which different modules are brought into service to balance deterioration among the modules.

A coupler knuckle casting having an enhanced bearing surface area and which is utilized in a railway freight car coupler. The coupler knuckle casting includes a tail section, and a hub section. The hub section has a pivot pinhole formed therein. Such pivot pinhole has generally straight cylindrical sidewalls. A front face section is connected to the hub section. Such front face section includes a nose section and a pulling face portion formed inwardly from such nose section. At such least a portion of such front face portion and such nose section includes an enhanced bearing surface area which includes a substantially flat portion disposed substantially in a vertical direction and which is substantially arcuate in a horizontal direction. The substantially flat portion extends for a predetermined distance in the vertical direction and for a predetermined length along the horizontal direction. There is the a transition section joining the tail section to the hub section. Such transition section includes a top metal section and a bottom metal section extending toward each other.

A toric contact lens utilizes concentric annual rings, a continually varying lens design as a function of distance from the lens center or any other function to create a range of cylinder axis zones on a single lens.

An interface for indicating the presence of inherited values in a document. The interface enables a user to rapidly determine if an audience specific document conforms to the expectations or requirements of an intended audience. The interface distinguishes between current, primary and secondary audience layer values through the use of color or any other mechanism that allows a user to quickly identify data that is missing and needs to be populated, changed or remain unchanged if the inherited data is suitable for the given audience. Using the interface, users can determine at a glance what information is inherited and what level of inheritance that information is from. Before generating an audience specific document targeted at a particular media type, an audience hierarchy may be created and utilized for entry and edit of data for a desired audience.

The method of the invention for monitoring a thrust reverser of a turbojet having an actuator controlled by an electric motor consists in determining a maintenance notice from a weighted combination of provisional notices, each provisional notice relating to a category of parameters associated with at least one phase of an operating cycle of the reverser, the category being selected from a category of parameters representative of a duration of said phase, of an energy seen by the motor during said phase, of a torque seen by the motor at a predefined instant of said phase, and of a duration during which the setpoint speed of rotation and the measured speed of rotation of the motor differ during said phase, each provisional notice being generated by analyzing values obtained during at least one cycle for at least one parameter of said category relative to a degradation threshold.

A process for producing a battery can in a transfer press comprises drawing a metal cup in a first station to form an elongated cylinder, ironing the elongated cylinder in a second station, and redrawing the elongated cylinder in a third station. In either or both the drawing and ironing steps, the cup or the elongated cylinder may be processed in more than one station. The process includes a final redraw station for redrawing the cylinder so as to roughen the inner surface of the battery can to improve its electrical properties.