Abstract: Various aspects include a wearable audio device having active noise reduction (ANR). In some cases, a method for processing audio signals includes receiving a noise reduction signal configured to modify an audio signal and generate a noise reduced audio signal, the noise reduction signal having a nominal loop gain; and generating an adjusted noise reduction signal in response to a detected adverse low frequency event, the adjusted noise reduction signal having a modulated loop gain configured to reduce artifacts in the noise reduced audio signal.

Abstract: A mixture of carbon nanotubes is separated into fractions that are enriched with a desired chirality by exposing a solution or suspension of the carbon nanotubes to a separation medium. A portion of the mixture forms complexes with, and becomes attached to, the separation medium. Exposure to other reagents results in dissociation of the complexes and release of the nanotubes from the separation medium.

Abstract: An electrical connector assembly includes a pair of spaced receptacle modules mounted to a first printed circuit board which is electrically coupled to a second printed circuit board spaced from and generally parallel to the first printed circuit board. A conductive ground plate is electrically coupled between the printed circuit boards and mechanically supports the circuit boards in their spaced generally parallel relationship. The ground plate is disposed perpendicular to the first and second printed circuit boards forming two separate compartments between the first and second printed circuit boards to provide electromagnetic interference isolation between the compartments. An electrical component such as transformer may be mounted on one side of the ground plate between the spaced generally parallel printed circuit boards, and the ground plate provides a heat sink for the transformer.

Abstract: A cable tap system is disclosed for selectively connecting a plurality of tap terminals to a plurality of conductors in either a continuous multi-conductor electrical cable or in two ends of two such cables butt up to one another. A closable cable clamp assembly clamps onto the continuous cable or cable ends. A terminal holder is positionable against one side of the cable clamp assembly and mounts a plurality of tap terminals for interconnection to the conductors of the cable. A backing member is positionable against an opposite side of the cable clamp assembly. A plurality of rotatable fasteners are operatively associated between the terminal holder and the backing member for sandwiching the cable clamp assembly therebetween and maintaining the tap terminals interconnected with the conductors of the cable. A tool is provided for simultaneously rotating the fasteners to close the terminal holder and the backing member in a uniform action.

Abstract: An electrical connector is provided of the wire-trap type. The connector includes a housing defining an interior cavity with a passage through the cavity for receiving an in-line conductor. A pair of openings are provided in the housing for receiving the stripped ends of a pair of electrical wires. A generally U-shaped terminal is disposed in the cavity of the housing and includes a pair of leg portions joined by a bight portion. The leg portions have wire-trapping distal ends in registry with the openings for deflectingly engaging and trapping the stripped ends of the electrical wires inserted into the openings. The bight portion has a terminating section in registry with the passage for termination to the in-line conductor.

Abstract: A wiring harness is disclosed for deploying electrical wires along a wall such as in a modular wall panel system for separating work areas. The wall has an elongate compartment defining a raceway for housing the wires. A first power block is positioned in the raceway at a first location and includes a given number of wires extending therefrom into the raceway. A second power block is positioned in the raceway at a second location longitudinally spaced from the first power block. The second power block has a different number of wires extending therefrom into the raceway toward the first power block. Splicing connectors electrically couple at least some of the wires between the two power blocks.

Abstract: Foam is sandwiched between baffles and two sheets of low friction enameled aluminum. The aluminum is bent to form waterproof seams between the sheets along the top edge and small runners along the bottom sheet. The body of the sled is shoulder width and narrow in depth to permit easy and rapid manual propulsion over ice and in water. All seams are riveted together, a top edge seam is a waterproof standing seam and the others are silicone treated for waterproofing. Side handles are secured to the body for carrying the sled. A hand-held combination ice grab and water paddle is secured to each side rail for propelling the sled. A front grasping rail is secured by protrusions from the front of the sled for the rescue. A harness cord with a snap hook at both ends is secured to the protrusions for harnessing the victim to the sled if necessary. A long tow line is attached to a rear hook.

Abstract: A flat rigid rectangular plate has four corners bent down to form rigid V-shaped points to grip on an ice surface. The plate is larger than an adult hand and serves as a hand-held paddle in water. A longer spike or triangular point extends away from the plate at a right angle to the V-shaped points for gripping an ice surface through a snow cover. A handle extending from the top of the plate maybe equipped with a safety cord to loop over the wrist of the user. The handle may be permanently upright or foldable.