Abstract: A comminution mill is described that includes a vertically oriented cylindrical housing with an intake chute in a top wall and an outlet chute in a bottom wall thereof. A rotatable shaft with a plurality of radially extending cables is disposed coaxially within the cylindrical housing. A plurality of studs extends inwardly from the wall of the housing to slow and collect materials flowing through the comminution mill. The studs can be withdrawn to discharge materials collected thereon. Slits are provided in the walls of the housing to enable the exit of particulate materials from the housing. A hood is provided overlying the slits on the exterior of the comminution mill for collecting the particulate material. Operation of the comminution mill provides a self-generated airflow and can be configured to separate, grind, and dry materials disposed therein.

Abstract: A grinding mill is described. The grinding mill includes a vertically oriented cylindrical housing with an intake chute in a top wall and an outlet chute in a bottom wall thereof. A shaft is disposed coaxially within the cylindrical housing. Mounting plates are disposed along the length of the shaft. The cables are coupled to the mounting plates with opposite ends of each cable extending radially outwardly from the mounting plates toward but not into contact with an inner wall of the housing. A plurality of obstructing members extends inwardly from the wall of the housing to slow the flow of materials through the mill. Baffles are disposed on the interior wall of the housing to direct materials and airflow. The cables are rotated to contact and grind materials deposited into the grinding mill and to generate airflow through the mill.

Abstract: A comminution mill is described that includes a vertically oriented cylindrical housing with an intake chute in a top wall and an outlet chute in a bottom wall thereof. A rotatable shaft with a plurality of radially extending cables is disposed coaxially within the cylindrical housing. A plurality of studs extends inwardly from the wall of the housing to slow and collect materials flowing through the comminution mill. The studs can be withdrawn to discharge materials collected thereon. Slits are provided in the walls of the housing to enable the exit of particulate materials from the housing. A hood is provided overlying the slits on the exterior of the comminution mill for collecting the particulate material. Operation of the comminution mill provides a self-generated airflow and can be configured to separate, grind, and dry materials disposed therein.

Abstract: A grinding mill is described. The grinding mill includes a vertically oriented cylindrical housing with an intake chute in a top wall and an outlet chute in a bottom wall thereof. A shaft is disposed coaxially within the cylindrical housing. Mounting plates are disposed along the length of the shaft. The cables are coupled to the mounting plates with opposite ends of each cable extending radially outwardly from the mounting plates toward but not into contact with an inner wall of the housing. A plurality of obstructing members extends inwardly from the wall of the housing to slow the flow of materials through the mill. Baffles are disposed on the interior wall of the housing to direct materials and airflow. The cables are rotated to contact and grind materials deposited into the grinding mill and to generate airflow through the mill.

Abstract: An oxygen-reducing catalyst layer, and a method of making the oxygen-reducing catalyst layer, where the oxygen-reducing catalyst layer includes a catalytic material film disposed on a substrate with the use of physical vapor deposition and thermal treatment. The catalytic material film includes a transition metal that is substantially free of platinum. At least one of the physical vapor deposition and the thermal treatment is performed in a processing environment comprising a nitrogen-containing gas.

Abstract: A method is provided for making a supported catalyst comprising nanostructured elements which comprise microstructured support whiskers bearing nanoscopic catalyst particles, where the method comprises step a) of vacuum deposition of material from at least a first carbon target in the presence of nitrogen and step b) of vacuum deposition of material from a second target comprising at least one transition metal, the second target comprising no precious metals. In one embodiment, step a) is carried out prior to step b). In another embodiment, steps a) and b) are carried out simultaneously. Typically the deposition steps are carried out in the absence of oxygen. Typically, the transition metal is iron or cobalt, and most typically iron. The present disclosure also provides a supported catalyst comprising nanostructured elements which comprise microstructured support whiskers bearing nanoscopic catalyst particles made according to the present method.

Abstract: Methods are provided for making oxygen-reducing catalyst layers, which include simultaneous or sequential stops of physical vapor depositing an oxygen-reducing catalytic material onto a substrate, the catalytic material comprising a transition metal that is substantially free of platinum; and thermally treating the catalytic material. At least one of the physical vapor deposition and the thermal treatment is performed in a processing environment comprising a nitrogen-containing gas.

Abstract: A method is provided for making a supported catalyst comprising nanostructured elements which comprise microstructured support whiskers bearing nanoscopic catalyst particles, where the method comprises step a) of vacuum deposition of material from at least a first carbon target in the presence of nitrogen and step b) of vacuum deposition of material from a second target comprising at least one transition metal, the second target comprising no precious metals. In one embodiment, step a) is carried out prior to step b). In another embodiment, steps a) and b) are carried out simultaneously. Typically the deposition steps are carried out in the absence of oxygen. Typically, the transition metal is iron or cobalt, and most typically iron. The present disclosure also provides a supported catalyst comprising nanostructured elements which comprise microstructured support whiskers bearing nanoscopic catalyst particles made according to the present method.

Abstract: A registration arrangement for a fuel cell stack assembly incorporates registration posts and registration apertures or recesses. Fuel cell assemblies of the stack may include first and second flow field plates and a membrane electrode assembly (MEA) having an active area. Registration apertures are defined in each of the MEA and the first and second flow field plates. The respective registration apertures are situated within non-active areas of the MEA when the first and second flow field plates and the MEA are in axial alignment. Registration posts are configured for reception within the registration apertures. Each of the registration posts has an outer surface differing in shape from a shape of the inner surface of the registration apertures. The inner surface of the registration apertures contact the outer surface of the registration posts at a plurality of discrete press-fit locations.

Abstract: Patterned articles, such as RFID antenna, are made by subablation, a process comprising the steps of: A. providing a substrate having a coating, such as a metal or metal oxide, and an interface comprising the thin region where the coating and the substrate are closest to each other; B. exposing at least one part of the total area of the coating to a flux of electromagnetic energy, Such as a focused excimer laser beam, sufficient to disrupt the interface but insufficient to ablate the coating, and C. removing the parts of the coating in registry with the portion of the interface area that was disrupted, by means such as ultrasonic agitation. The process has advantages over photo-resist processes in that there is no residual chemical resist left on the product and no undercutting of the pattern or image. It has advantages over laser ablation processes in that higher throughput is possible at the same energy level and there is no microscopic debris left on the product surface.

Abstract: Patterned articles, such as RFID antenna, are made by subablation, a process comprising the steps of:

Abstract: Patterned articles, such as RFID antenna, are made by subablation, a process comprising the steps of: A. providing a substrate having a coating, such as a metal or metal oxide, and an interface comprising the thin region where the coating and the substrate are closest to each other; B. exposing at least one part of the total area of the coating to a flux of electromagnetic energy, such as a focused excimer laser beam, sufficient to disrupt the interface but insufficient to ablate the coating; and C. removing the parts of the coating in registry with the portion of the interface area that was disrupted, by means such as ultrasonic agitation. The process has advantages over photo-resist processes in that there is no residual chemical resist left on the product and no undercutting of the pattern or image. It has advantages over laser ablation processes in that higher throughput is possible at the same energy level and there is no microscopic debris left on the product surface.

Abstract: Crayons are provided with microcapsules containing fragrant materials within the shell of the microcapsules. Applying color to surfaces ruptures some of the microcapsules and releasing a fragrance. Some microcapsules remain intact within the color applied to the surface and may be ruptured by abrading the coloration on the surface. The colors and fragrances may be chosen to correspond with each other.