Abstract: A sleeping pillow divided by a hinge web into head and neck sections, with a neck recess defining a neck roll formed in the neck section, and with the neck section moveable about web to hinged position with respect to a horizontal head section so that pillow supports a sleeper's head at the head section and neck on the neck roll.

Abstract: An anti-backup mechanism for constraining operating components in an operating mechanism to complete first and second strokes of reciprocal linear motion.

Abstract: A launcher for heat exchanger tube cleaning projectiles using operator selected compressed air application for manipulating launcher operating components including hydraulic bolt, projectile plunger, and water valve to fire projectile with pressurized water, and to reset operating components for subsequent projectile firings. Launcher has means for venting heat exchanger tube over- or under-pressure occurring in practice, and further has visual indicator of force applied in firing projectiles, and of tube being clear after exiting of projectile from the tube.

Abstract: A tube cleaning implement with elongate shaft supporting a brush in a median section and similar scrapers or wipers fitted to opposite ends of the shaft to provide for a scrape-brush-scrape cleaning action of tube interiors, and to provide a reversible implement having extended useful life.

Abstract: A method and apparatus reliable, accurate and continuous measurement of air inleakage into the condenser of a steam-electric power plant with convenient monitoring by power plant personnel.

Abstract: A machine for cleaning coils in HVAC installations including particularly the coils located in outdoor HVAC units and coils located in interior ductwork the machine comprising a shell housing enclosing cleaning fluids, an electrical system for line power or battery operation, and a fluid control system for selecting cleaning fluid and the pressure and volume of fluid applied in cleaning coils.

Abstract: Replaceable refiner fillings used for refining of lignocellulosic and other natural and synthetic fibrous materials in the manufacture of paper, paperboard, and fiberboard products. The refiner fillings include a pattern of blades and spacers defined by a bar cluster, with the bar cluster being the basis of formation of the filling. A method of manufacture provides bar cluster patterns based on factors including pumping angle, plurality of segments in a refiner filling, and the number of clusters in a segment. A bar set cluster is established for uniform fabrication of bar clusters for the refiner fillings.

Abstract: Replaceable refiner fillings used for refining of lignocellulosic and other natural and synthetic fibrous materials in the manufacture of paper, paperboard, and fiberboard products. The refiner fillings include a pattern of blades and spacers defined by a bar cluster, with the bar cluster being the basis of formation of the filling. A method of manufacture provides bar cluster patterns based on factors including pumping angle, plurality of segments in a refiner filling, and the number of clusters in a segment. A bar set cluster is established for uniform fabrication of bar clusters for the refiner fillings.

Abstract: A paint can and paint brush holder in the form of a tray having means for securing the can to the tray, means to facilitate holding the tray and paint can with one hand as the other hand applies paint from an open can with a brush, the tray having place for setting down one or more wet brushes, and for holding a wipe-up rag.

Abstract: A tube scraper for removing deposits from the interior surface of heat exchange tubes, the scraper being fitted with a set of diverging scraper blade arms mounted on an arbor in nested relationship such that scraper blades have overlapping scraping edges.

Abstract: An apparatus and method for removing water and debris from a cooling tower basin, discarding debris and returning clean water to the basin.