Abstract: A computer based system and method for real-time display of co-registered historical and current side scan sonar imagery during a side scan sonar survey. Embodiments also include modules for detection of clutter in the current imagery, identification of features, extraction of snippets, filtering based on predetermined size and shape parameters, and determination if a current feature is the same as a previously identified contact from historical imagery.

Abstract: A self-contained vacuum circular saw is presented. The vacuum saw has a casing around the saw blade that includes an accordion type lower section attached to the lower platform of the saw. A number of vacuum tubes, preferably four, are attached to the side of the circular saw opposite the blade. The armature of the circular saw that turns the blade also turns the vacuum impeller on the side opposite the blade. An impeller vacuum chamber pulls in the dust and debris created by the saw blade and discharges the dust and debris into a disposable and removable vacuum bag. An important aspect of this device is that the motor that turns the saw blade also turns the impeller, thus making the self-contained vacuum saw moveable from site to site.

Abstract: A self-contained vacuum circular saw is presented. The vacuum saw has a casing around the saw blade that includes an accordion type lower section attached to the lower platform of the saw. A number of vacuum tubes, preferably four, are attached to the side of the circular saw opposite the blade. The armature of the circular saw that turns the blade also turns the vacuum impeller on the side opposite the blade. An impeller vacuum chamber pulls in the dust and debris created by the saw blade and discharges the dust and debris into a disposable and removable vacuum bag. An important aspect of this device is that the motor that turns the saw blade also turns the impeller, thus making the self-contained vacuum Saw moveable from site to site.

Abstract: Several modifications of electrical connectors are shown for the quick connection of the bare ends of lead wires including all types of terminals such as flat ring terminals, or flag or right angle push-on terminals. One modification of this connector has a central elongated screw with a lower end that is adapted to be clamped into the hole of an insulating panel by a pair of adjustable nuts. The screw extends vertically from the panel, and it supports an elongated coupling nut that is threaded onto the screw. An inverted conical spring surrounds the coupling nut, where the lower end is the smallest end, and it is seated upon a flat washer. The upper end of the conical spring is the larger end, and it supports a large washer that slips down over the upper end of the coupling nut. A cup washer is seated upon the top of the coupling nut, and the top end of the screw is formed with a screw head that locks the cup washer to the coupling nut.