Abstract: A plastic tubing having at least two layers for a fluid cooling system includes a first layer being formed from an ethylene tetrafluoroethylene or a fluorinated ethylene propylene based plastic material and configured as an internal lining formed of a fluorocarbon plastic material. Further, a second layer is configured as a sheathing to the first layer and formed from polyamide material. An adhesive layer may be disposed between the first and second layer and at least one other layer may be configured as an external sheathing of the plastic tubing formed from an elastomer based material.

Abstract: A system for and method of delivering pulses of a desired mass of gas to a tool is described.

Abstract: A co-extruded tubing for the administration of intravenous fluids has an outer layer of a polyester. An inner fluid-contact layer may be of a polyethylene or of a thermoplastic polyurethane. Where the inner fluid-contact layer is of polyethylene, an intermediate tie layer of ethylene-vinyl acetate copolymer may be included to prevent delamination.

Abstract: A fuel vapor control apparatus halts deterioration in operating characteristics of a fuel control valve at the time of fuel supply and prevents fuel vapor from being discharged into the atmosphere through a filler pipe. The fuel vapor control apparatus prohibits fuel vapor from flowing toward a filler pipe by closing a fuel drop passage at the time of fuel supply. A fuel vapor control valve is configured as a diaphragm valve made of a flexible material, and a diaphragm holder moving integrally with the diaphragm valve is provided at the center thereof. Furthermore, the fuel drop passage as a communication hole is formed in the diaphragm portion at a location radially outward of the diaphragm holder, which is provided with an umbrella portion for opening and closing the fuel drop passage.

Abstract: Apparatus for intermittently supplying a predetermined quantity of water at regular, predetermined intervals comprising: a water tank for accumulating and storing water; water feeding means and inlet valve means; float-actuated valve means within said water tank; a down pipe connected to said water tank and terminating in a tapered tube; a siphon tube from said water tank terminating in a tapered tube which extends together with the tapered tube of said down pipe into a venturi outlet; and, an ejector tube extending downwardly from said venturi outlet.