Abstract: A system is provided for suspending a plurality of line array loudspeakers. The suspension system includes a rigging bar having an engaging member, such as a pivotal member, positioned near one end of the rigging bar. The engaging member includes a free end capable of extending outward past the end of the rigging bar in which the engaging member is positioned. The end of the rigging bar opposite the pivotal member is designed to releasably receive an engaging member of an adjacent rigging bar. The free end of the engaging member of the rigging bar may include a hole that aligns with holes positioned in the receiving end of the rigging bar. The engaging member of one rigging bar may then be secured to an adjacent rigging bar by aligning holes of the engaging member of a first rigging bar with the holes in the receiving end of a second rigging bar and inserting a release pin through the aligned holes.

Abstract: A method is provided for computing frequency responses of crossover filters for multi-way loudspeakers. The method prescribes driver coordinates for drivers in the multi-way loudspeaker, prescribes an attenuation function for the sound pressure level at a desired angle, computes the crossover frequencies using a point source model and computes the frequency responses in intervals defined by the crossover frequencies.

Abstract: A monitoring device to detect an indication of reverse power flow across a monitored transformer. The monitoring device adapted to handle a series of phase angle differences between a monitored current and a monitored voltage and establish a baseline phase angle difference after the network protector closes to connect the monitored transformer to a distribution network. The monitoring device working to establish a baseline phase angle even when a measured value for the magnitude of the monitored current has a reversed polarity from an actual current flowing from the monitored transformer or when the monitored current and the monitored voltage are not taken from the same phase from the monitored transformer. The monitoring device adapted to detect a significant change in phase angle difference from the baseline phase angle difference as an indication of reverse power flow. This abstract is intended as a tool to help others locate a relevant disclosure and not as a guide to the scope of the claims.

Abstract: A multifunctional rotary switch for operating an electronic device is providing having a roller with an axis of rotation. The roller has a bidirectional rotational mode of operation where the roller rotates in both a clockwise and counter clockwise direction around the axis, a translational mode of operation where the roller is moved in a direction substantially parallel to the axis of rotation and a pushing mode of operation where the roller is moved in a direction substantially perpendicular to the axis of rotation.

Abstract: A system and method of installing sensors around a perimeter of a motorized armored vehicle door to detect obstructions between a closing door and a door frame are provided. A safety switch including a plurality of sensors formed of a sensing element molded in a casing is provided. Adjacent sensors are separated from one another by electrical connectors. A clip is used to retrofit the safety switch to the door.

Abstract: An optimum route search may be conducted through the use of a tiling overlay on the network of road segments. Overlaying the tiling (grid) over the road segments allows for a reduction of the number of road segments considered for an optimum path as road segments can be evaluated on whether the road segment is part of an optimal path to the borders of a first tile and then successively larger frames of tiles around the initial tile. By reducing the number of road segments considered for the optimum route search to road segments that are part of optimal routes to various tile boundary edges, the computation of the optimum route for the route of interest may be quicker and less resource intensive than efforts to determine optimum routes through other methods.

Abstract: An electronic device comprises a display for displaying data stored on said electronic device; input means; sensing means for sensing the three-dimensional position of the input means relative to said device; and control means for controlling the data displayed on said display in dependence on the three-dimensional position of the input means relative to said device. The input means includes a source of electromagnetic radiation for directing an infrared conical beam onto the display. The sensing means can sense the elliptical eccentricity of the electromagnetic radiation incident on the display to determine the angle at which it strikes the display, and can sense the area of the electromagnetic radiation incident on the display to determine the distance of the input means from the display.

Abstract: A spring-energized stapler having a pliers type configuration, wherein papers and like items are fastened at a front end and the stapler is normally gripped and squeezed at a rear end. A compact mechanism and independent handle linkages provide a compact overall shape in a high efficiency action. An upper handle is pivoted at a front, top of a housing with a pressing area spaced at least one half the handle length away from the upper handle pivot. A lower handle includes a multi-segment cam link to a base to provide a minimal gripping distance with a large clamping force at an anvil. A simplified front-loading mechanism provides a compact, low cost assembly. A release latch holder is located behind the striker for a compact front end.

Abstract: A speaker system with an enclosure having at least six sides. At least two active transducers are mounted inside the enclosure. Each active transducer is oriented to project from one of the sides. At least four passive radiators are mounted inside the enclosure. Each passive radiator is oriented to project from one of the sides. The number of active transducers and passive radiators equals the number of sides on the enclosure.

Abstract: An improved jaw apparatus is provided for making or breaking a tubular pipe connection. The jaw includes a head adapted to receive a hook having a threaded shank end. The threaded shank end is engaged at the head end opposite the hook end by a hydraulic powered nut adjustment assembly. The adjustment assembly may be operated by a control unit to allow for the automatic opening and closing of the jaw for receiving pipes of varying diameters.

Abstract: Tools for use in the deployment of spinal implant assemblies such as spinal motion preservation assemblies adapted for use in a spinal motion segment are disclosed including the process for delivering and assembling the spinal motion preservation assemblies in the spinal motion segment via an axial channel created with a trans-sacral approach. The tools allow the deployment of a pair of spinal implant components that are not rigidly connected to one another to be driven into adjacent vertebral bodies. The tools further allow for distraction via either dissimilar thread pitch or by axially advancing a distraction tool based on a threaded engagement with a proximal component in a proximal vertebral body to impose an distraction between that vertebral body and an adjacent distal vertebral body. The tools also allow for the provision of flowable biomaterials such as prosthetic nucleus material. Delivery of flowable biomaterials can be performed while the vertebrae are being held apart by a distraction tool.

Abstract: A clip for securing one object relative to another, such as securing an object to a vehicle door or frame is provided. The clip is useful for installing a strip of safety sensors around the circumference of a vehicle door retrofitted with a motorized assist system.

Abstract: A Bi-Directional and Adjustable Current Source (“BACS”) for providing an amplifier input with a voltage signal that is linear, where an output of the BACS and the amplifier input are shunted with a capacitor, is described. The BACS may include a first switch in signal communication with a high voltage reference and a first current source in signal communication with the first switch. The BACS may also include a second switch in signal communication with a low voltage reference and a second current source in signal communication with the second switch. The BACS may further include a directional current element in signal communication with both the first current source, the second current source, the output of the BACS, the amplifier input, and the capacitor, where the directional current element is configured to prevent current flow from the output BACS to the first current source.

Abstract: This invention provides an acoustic waveguide with a continuous least-energy-surface formed from an upper vertical control curve, a lower vertical control curve, right horizontal control curve and a left horizontal control curve. In addition, a circular throat end and a non-elliptical closed control curve form a mouth such that the continuous least-energy-surface is coincident with the six control curves.

Abstract: A head-mounted display system is provided. According to one example of an implementation, the head-mounted display system includes at least one sensor detecting surrounding information, a processing unit processing the surrounding information received from the at least one sensor, a display control unit generating display information to be displayed to a user of the system from the processed surrounding information received from the processing unit, and a head-mounted display capable of displaying information received from the display control unit to the user.