Abstract: The reusable abbreviated mitten system provides a rubberized mitten having an abbreviated mitten length such that the mitten reaches only to the base of the thumb of a user, a finger portion, a hand reinforcement cuff, a symmetrical thumb portion, an obround case having an open top, a closed bottom, and an inverted L clip disposed on one side of the case. The mitten provides for quick donning and doffing while saving considerably on materials and production costs to not only provide easy, quick, reusable use, but also to contribute to environmentalism and natural resource savings. The mitten is formed of elastic rubber and alternately non-elastic rubber.

Abstract: A current interface has an impedance buffering circuit which maintains a very low input impedance at an input node, while producing currents to two current outputs which increase and decrease, respectively, with increases and decreases in the input current flow. In a preferred embodiment, the impedance buffering circuit is an operational amplifier which has been modified to provide access to the collector terminals of a complementary output transistor pair. The collector terminals are connected to current mirrors which are also connected to an output node of the interface circuit. The amplifier and current mirrors effectively buffer the input and reconstruct changes in the input current at the output node, while maintaining a very low input impedance at the input node. Compensation for errors introduced by the changes in base currents of the complementary output pair is provided by a matching pair of complementary transistors.

Abstract: A pipe cutter for cutting and beveling pipe. The pipe cutter has a split ring frame attachable to a pipe. A split ring carrier assembly is rotatably mounted to the frame. The carrier assembly carries a cutter arm. The cutter arm is pivotally mounted to the carrier assembly so that it may be adjusted for pipe of various sizes. An automatic transition cutting means for making transition cuts can be attached to the cutter arm and split ring carrier assembly. The feeding means for advancing the transition cutting means is responsive to rotation of the carrier assembly about the frame. The feeding means is completely enclosed within the cutter arm, carrier assembly and frame.

Abstract: A pipe cutter with a split ring frame attachable to a pipe. A split ring carrier assembly is rotatably mounted to the frame. The carrier assembly carries a cutter arm which in turn carries a cutter tool. The cutter arm is pivotally mounted to the carrier assembly so that it may be adjusted to cut pipe of various sizes. The feeding means for advancing the cutting tool is responsive to rotation of the carrier assembly about the frame. The feeding means is completely enclosed within the cutter arm, carrier assembly and frame.