Abstract: A device for shielding electromagnetic fields is provided. The device embodies a helmet having layers of a nickel-iron ferromagnetic alloy, a copper mesh, and an air gap; at least one channel extending radially from the helmet; at least one plug configured to removably fit into respective channels wherein each plug is operative shielding electromagnetic fields by way of the channel; and at least one sensor incorporated into the helmet.

Abstract: A plug for an electromagnetic field channel. The plug may have a tubular body capped at one end. The body may be composed of a plurality of coaxial layers, including electromagnetically inert outermost and innermost layers. A MU-metallic second layer may be wrapped by the outermost electromagnetically inert layer, and a copper third layer may be wrapped by the innermost electromagnetically inert layer. An air gap may be disposed between the second and third layers.

Abstract: A multilayer electromagnetic shielding system providing two stacks spaced apart by an air gap, wherein each stack has an electric-field-attenuating layer adhered to a magnetic-field-attenuating layer. An electromagnetically inert material may sandwich the spaced apart stacks for insulative and structural purposes.

Abstract: A method and device for measuring electromagnetic fields embodied in an electromagnetic field (EMF) channel that defines a lumen for receiving an EMF-measuring sensor. The EMF channel includes coaxial inner first layer of Mu-metal surrounded by a second layer of interlaced mesh copper, wherein the first layer is configured to attenuate the magnetic field and the copper attenuates the electric field of external, undesired EMFs, thereby promote propagation of a desired EMF to the housed senor.

Abstract: A pump system includes dual centrifugal pumps mounted on a fabricated skid. Both pumps are belt driven by one motor. The pumps are piped with three two-way valves and crossover piping configured such that the pumps can be operated in either series or parallel flow using a single inlet and outlet for the system.

Abstract: A centrifugal pump including a pump chamber, a wear plate, and a rotatable impeller is disclosed. The wear plate has a suction inlet. The pump chamber includes a high pressure region around the impeller within the pump chamber. The impeller's front face has portion located adjacent the wear plate to form a recirculation zone in fluid communication with the high pressure region. Another portion of the impeller's front face forms a small running clearance between it and a portion of the wear plate. That running clearance is interposed between the recirculation zone and the suction inlet. The wear plate includes plural deflector vanes projecting into the recirculation zone. A portion of the front face of the impeller includes plural pump-out vanes in the recirculation zone. The deflector vanes cooperate with the pump-out vanes to expel abrasive particles and prevent them from collecting and eroding the running clearance.

Abstract: A pump system includes dual centrifugal pumps mounted on a fabricated skid. Both pumps are belt driven by one motor. The pumps are piped with three two-way valves and crossover piping configured such that the pumps can be operated in either series or parallel flow using a single inlet and outlet for the system.

Abstract: A simple, compact, and disposable unit for transporting living cells at living-body temperature is disclosed. The transport unit may include a box enclosure with two resistive heating elements on opposite sides of a container with living cells in the container. A portable, disposable power source may be located in the box to provide power to the resistive heating elements. One or more controllers may be located in the box and used to control power to the resistive heating elements and maintain a temperature of the living cells at living-body temperatures.

Abstract: A centrifugal pump including a pump chamber, a wear plate, and a rotatable impeller is disclosed. The wear plate has a suction inlet. The pump chamber includes a high pressure region around the impeller within the pump chamber. The impeller's front face has portion located adjacent the wear plate to form a recirculation zone in fluid communication with the high pressure region. Another portion of the impeller's front face forms a small running clearance between it and a portion of the wear plate. That running clearance is interposed between the recirculation zone and the suction inlet. The wear plate includes plural deflector vanes projecting into the recirculation zone. A portion of the front face of the impeller includes plural pump-out vanes in the recirculation zone. The deflector vanes cooperate with the pump-out vanes to expel abrasive particles and prevent them from collecting and eroding the running clearance.

Abstract: A centrifugal pump with a cutter mechanism has a toothed cutter auger affixed to an impeller, and a toothed cutter stator affixed to the volute casing. The auger is a rotor cutter preferably profiled radially to match the inlet geometry of the impeller vanes while extending along its central axis towards the pump suction. The auger is preferably radially concentric to the impeller and includes vanes numbered preferably to match the number of vanes on the impeller. The auger is affixed to the impeller, preferably with a lockscrew threaded into a common pump shaft. The radial profile of the auger essentially makes a continuous vane with the impeller, and prevents solids from hanging on the inlet vane tip or center void while providing a smooth flow transition into the impeller.

Abstract: A centrifugal pump with a cutter mechanism has a toothed cutter auger affixed to an impeller, and a toothed cutter stator affixed to the volute casing. The auger is a rotor cutter preferably profiled radially to match the inlet geometry of the impeller vanes while extending along its central axis towards the pump suction. The auger is preferably radially concentric to the impeller and includes vanes numbered preferably to match the number of vanes on the impeller. The auger is affixed to the impeller, preferably with a lockscrew threaded into a common pump shaft. The radial profile of the auger essentially makes a continuous vane with the impeller, and prevents solids from hanging on the inlet vane tip or center void while providing a smooth flow transition into the impeller.

Abstract: The disclosed airbag module may be used in a vehicle. The airbag may include an airbag for protecting a vehicle occupant and at least one tearable sleeve. The airbag is configured to be in a folded or rolled up state and to deploy along an interior side portion of the vehicle. The at least one tearable sleeve is coaxially or circumferentially surrounding a portion of the airbag in the folded or rolled up state.

Abstract: An air bag on a surface is gathered by opposing faces of first and second gathering elements that are moved together from opposing edges of the air bag, and which are adapted so as to limit a height of at least one associated edge portion of the air bag to be less than a height proximate to a center of the resulting gathered air bag. In one aspect, a surface is extended from at least one face, or at least one face is shaped so as to limit the edge portion height upon gathering. In another aspect, at least one gathering element incorporates a holder adapted to hold an edge of the air bag during gathering.