Abstract: A system which is composed of a blower unit for a powered air purifying respirator and an electrically powered accessory. The blower unit has a blower device and a battery for powering the blower device. And the accessory is equipped with a power connector. The blower unit provides a power outlet for connection with the power connector. The power connector has a plug. Furthermore the power connector has an unplug lever for retracting the plug for unplugging. The unplug lever and the plug are connected by a pivot joint that forms a pivot axis. The unplug lever forms a handle arm and a counter arm that extend away from the pivot joint in opposite directions.

Abstract: Abrasive articles and associated methods are shown that include one or more camouflaging layers that can be applied to a portion of the abrasive article. The one or more camouflaging layers can be applied over the size coat layer as a discontinuous colored layer covering a portion of the size coat layer. In an example, the camouflaging layer can be applied as a repeating pattern of one or more colors on the abrasive article. In an example, the camouflaging layer can be applied randomly to the abrasive article. The discontinuous layer can have a color markedly different than a color of the size coat layer and can be used to mask or minimize an appearance of particle imperfections or voids on the abrasive article. The discontinuous layer can be applicable to coated and non-woven abrasive articles in the form of sheets, discs, belts, pads, or rolls.

Abstract: A framed air filter that includes air filter media and a frame with four frame portions. At least one corner of the frame is a bonded, non-integral corner at which a stabilizing flap that integrally extends from a first frame portion of a pair of neighboring frame portions that meet to form the non-integral, bonded corner, is affixed to an inner sidewall of a second frame portion of the pair of neighboring frame portions.

Abstract: Materials and methods useful in forming nano-scale features on substrates, and articles such as optical films incorporating such nano-scale patterned substrates.

Abstract: A curved reflective has at least one location having a radius of curvature in a range from about 6 mm to about 1000 mm. Each location on the reflective polarizer has a maximum reflectance greater than about 70% for a block polarization state, a maximum transmittance greater than about 70% for an orthogonal pass polarization state, and a minimum transmittance for the block polarization state. For a continuous first portion of the reflective polarizer extending between different first and second edges of the reflective polarizer and defining disjoint second and third portions of the reflective polarizer, the minimum transmittance of the reflective polarizer for the block polarization state is higher at each location in at least 70% of the first portion than at each location in at least 70% of the second portion and at each location in at least 70% of the third portion.

Abstract: An optical system (200) includes an emissive display (220) and a reflective polarizer (100) disposed on the display (220). The display (220) includes a blue pixel (222b) emitting light having a peak at a wavelength ?b. For substantially normally incident light: for the wavelength ?b, the reflective polarizer (100) reflects at least 30% of the incident light having a first polarization state (b) and transmits at least 75% of the incident light having an orthogonal second polarization state(a); and for at least one wavelength ?1 greater than ?b, ?1-?b?50 nm, the reflective polarizer (100) transmits at least 75% of the incident light for each of the first and second polarization states. For the wavelength ?b, the reflective polarizer (100) has a maximum optical transmittance Tmax for light incident at a first incident angle, and an optical transmittance Tmax/2 for light incident at a second incident angle greater than the first incident angle by less than about 50 degrees.

Abstract: Filter assemblies are described. In particular, a filter securement assembly for receiving and retaining a filter media in an exhaust hood includes a main panel defining a first end and an opposed second end, a first retainment surface adjacent the first end of the main panel, a first retainment lip adjacent the first retainment surface, a second retainment surface adjacent the second end of the main panel and a second retainment lip adjacent the second retainment surface.

Abstract: A road obstacle warning system (A) includes a plurality of road units (1) and a power supply means for powering the road unit (1) through a main supply line (7). The road units (1) are disposed one adjacent to another on a road surface and configured to interconnect with each other. The road unit (1) includes a top body (2) and at least two shanks (3). The system (A) also includes at least one lighting element (4) comprising optical parameters for carrying light internally in order to glow the entire lighting element (4). The power supply means include any external power source include a solar power system, a step down power supply, a stored battery power supply or any other generated power supply. The road unit (1) is also powered by a wireless power source through induction means.

Abstract: A powered room air purifier including a non-movable air filter holder. The room air purifier may include at least one guide ramp located at an upper end of the air filter holder. An air filter may be installed into the air filter holder by a combination of translational and rotational movement of the air filter.

Abstract: A radio-wave anti-reflection sheet has a substantially non-tacky first major surface and an opposing substantially tacky second major surface and includes a first polymeric foam layer disposed between the first and second major surfaces, and a second polymeric foam layer disposed between the second major surface and the first polymeric foam layer. The first polymeric foam has a thickness from 0.05 to 3.0 mm and a density from 0.20 to 0.90 g/cm3. The second polymeric foam layer has a thickness from 0.05 to 3.0 mm and a density greater than 0.10 g/cm3 and less than the density of the first polymeric foam layer. A tape includes the radio-wave anti-reflection sheet disposed on a release liner. A vehicle member includes a multilayer substrate and the radio-wave anti-reflection sheet disposed on the multilayer substrate.

Abstract: A replacement part validation system is presented that includes a scanning system that scans a received part and provides the scan results of the received part. The system also includes a part recognition module that, based on the received scan results of the received part and provides a part identification and a part quality metric. The system also includes a job assignment module that assigns the received part to an outstanding repair job. The system also includes an output generator that outputs the outstanding repair job and the part quality metric. The system also includes a computing processor that, based on the received scanned results, causes the part recognition module to review a database of parts and retrieve a most-likely match. The part quality metric is based on a comparison of the received part to the most-likely match. The computing processor causes the output generator to output the outstanding repair job and part quality metric to a source.

Abstract: Optical films are described. In particular, optical films including a reflective polarizer portion and an infrared portion, with no adhesive between these two portions, are described. These optical films may be particularly suitable for combiner applications, including automotive heads up display applications with demanding ambient environments.

Abstract: The present invention relates to an adhesive film comprising an adhesive layer; a photothermal conversion layer containing a light absorber and a thermally decomposable resin; and an adhesive base film layer disposed between the adhesive layer and the photothermal conversion layer, wherein the adhesive base film layer contains a multifunctional epoxy resin, a binder resin, a curing agent, and a curing catalyst. The adhesive film according to the present invention may be able to simplify a processing process of a substrate, and prevent damage to the substrate and circuits or elements formed on the substrate.

Abstract: Methods for active data center management by injecting randomized controlled signals in the operational controls of the cooling infrastructure of the data center and receiving response signals corresponding with the injected signals. The injected signals are used to adjust the operational controls of the cooling infrastructure, and the response signals relate to the operational conditions in the data center. Based upon the response signals along with independent and external variables, the randomized signals are continually injected into the cooling infrastructure and fine-tuned based upon the response signals. Optimum or improved parameters for controlling the cooling infrastructure of the data center are determined based upon the signal injections and corresponding responses.

Abstract: The present disclosure provides a remote sensing system. The remote sensing system includes an article of personal protective equipment (PPE) including a display panel configured to be viewed by a wearer of the article of PPE. The remote sensing system further includes a plurality of sensors disposed remotely from the article of PPE. Each of the sensors is configured to generate a respective signal. The remote sensing system further includes a processor communicably coupled to the plurality of sensors and the display panel of the article of PPE. The processor is configured to receive the respective signals from the plurality of sensors. The processor is further configured to select at least one signal from the respective signals. The processor then determines at least one critical message corresponding to the at least one signal.

Abstract: A film stack includes co-stretched first and second layers. The first layer is stained with iodine and has a glass transition temperature of at least 5° C. greater than a glass transition temperature of the second layer. The second layer has in-plane birefringence of less than 0.02 and a retardance of less than 100 nm.

Abstract: An optically transparent antenna stack includes at least two stacked optically transparent antennas. Each antenna includes an electrically conductive metal mesh including a plurality of interconnected electrically conductive metal traces defining a plurality of enclosed open areas. The metal mesh of each antenna and each lead has a percent open area greater than about 50%. The at least two stacked optically transparent antennas includes a first antenna configured to operate over a first, but not a second, frequency band and a second antenna configured to operate over the second, but not the first, frequency band. The optically transparent antenna stack has an optical transmission of at least about 50% for at least one wavelength in a wavelength range from about 450 nm to about 600 nm.

Abstract: A device is described having one or more conductive loops to produce an electromagnetic field, such as for wireless power transfer to an electronic device. In some examples, an antenna is used with at least one resonating capacitor ring that is relatively co-planar with the antenna, and that is magnetically coupled to the antenna but is not electrically powered by an external source. In addition, a device is described having two or more thin-film coils, each coil comprising a pair of terminals and at least one loop defining a plane and an interior region. In some examples, the planes of the two or more coils are disposed substantially parallel to one another, the interior regions of the two or more coils at least partially overlap one another, and the pairs of terminals of the antennae are electrically connected in parallel.