Abstract: Various methods and devices are provided for allowing multiple surgical instruments to be inserted into sealing elements of a single surgical access device. The sealing elements can be movable along predefined pathways within the device to allow surgical instruments inserted through the sealing elements to be moved laterally, rotationally, angularly, and vertically relative to a central longitudinal axis of the device for ease of manipulation within a patient's body while maintaining insufflation.

Abstract: Styrene-free unsaturated polyester resin and vinyl ester resin compositions are provided which contain low amounts of hazardous air pollutants, good mechanical and physical properties, and good corrosion resistant characteristics. The resin systems are such that minimal or no component is leachable after completion of the curing process. The resins are suitable for repair of sewer pipes and potable water pipe systems as part of a cured-in-place pipe application. Additionally, the invention is suitable for relining of storage tanks. A process for the manufacture of these resin compositions is also provided.

Abstract: Styrene-free unsaturated polyester resin and vinyl ester resin compositions are provided which contain low amounts of hazardous air pollutants, good mechanical and physical properties, and good corrosion resistant characteristics. The resin systems are such that minimal or no component is leachable after completion of the curing process. The resins are suitable for repair of sewer pipes and potable water pipe systems as part of a cured-in-place pipe application. Additionally, the invention is suitable for relining of storage tanks. A process for the manufacture of these resin compositions is also provided.

Abstract: A wrench that includes a handle and a tool head. The tool head is positionable in a plurality of positions relative to the handle. The wrench is useful in installing and repairing shower drains and sink drains and other similar drain arrangements.

Abstract: A system is provided for automatically clamping a cable drum in the event of mechanical failure of the drive train that connects the cable drum to its prime mover. The system monitors the mechanical continuity of the drive train by comparing the number of revolutions of the prime mover with the number of revolutions made by the cable drum in the same time interval. The system actuates a caliper disc brake mounted with the drum if a discontinuity of the drive train is detected. In the electrica system, shaft encoders are used on both the cable drum axle and prime mover shaft. The cable drum encoder is selected such that the number of pulses it produces per revolution of the cable drum is approximately equal to the number of pulses produced by prime mover shaft encoder per revolution of its shaft divided by the speed reduction ratio of the drive train.