Abstract: The invention provides a method for preparing polyhalide resin disinfectants. The step of the method involves circulating an effective amount of a polyhalide salt carrier solution between an effective amount of elemental halide and a strong base anion exchange resin until substantially all of the resin is converted to the polyhalide form. The elemental halide and the resin are separately disposed but connected so that the polyhalide salt carrier solution can be recirculated until all of the elemental halide is transferred to the resin. The method of the invention can be used to form a tri-iodide or penta-iodide resin, or mixed form of the resin including IBr.sub.2.sup.-/I.sub.2.sup.-.

Abstract: A manually operable water purification system which includes (i) a first container having an open end and an outlet orifice, (ii) a filter operably positioned within the first container for filtering contaminated water placed within the first container as the contaminated water is forced toward the outlet orifice in the first container, (iii) a porous body of biocidally effective material operably positioned within the first container for disinfecting the filtered water as the filtered water is forced toward the outlet orifice in the first container, (iv) a plunger sealably receivable within the first container through the open end for forcing contaminated water retained within the first container through the filter and the porous body of biocidally effective material, and (v) a passageway through the plunger provided with a check valve for abating formation of a vacuum within the first container as the plunger is withdrawn from the first container.

Abstract: A water purification system including both a filter and a body of biocidally active material for microbiologically purifying biologically contaminated water. The system provides for the production of microbiologically purified water during both upstroke and downstroke of the plunger and includes a brush which can be reciprocated within the system for cleaning the filter.

Abstract: Motor apparatus which converts hydraulic energy and change of state heat energy to mechanical energy. The motor includes a main chamber divided by a piston into first and second portions. During a first half cycle or hydraulic power stroke, a valve places the first portion of the chamber in fluid communication with a source of pressurized, saturated liquid and the second portion of the chamber in fluid communication with a drain port. A switch senses the end of the hydraulic power stroke and causes the valve to move to a second position wherein the first and second portions of the chamber are placed in fluid communication with one another to form a common motor chamber and drive the piston in an expansion power stroke. Power is derived from the working fluid during the piston stroke in each direction. The motor finds particular application for energy recovery in an absorption refrigeration system.

Abstract: An energy recovery pump-motor including an energy recovery pump and a mixed-phase motor for replacing conventional valves in fluid circuits such as an absorption refrigeration system. The energy recovery pump pressurizes a first liquid by recovering flow work energy from a second liquid. The mixed-phase motor recovers flow work energy and expansion energy from a high pressure, saturated third liquid and transfers the energy along a shaft to the pump to aid in pressurizing the first liquid. The energy recovery pump is shown in a single effect absorption refrigeration system, while the pump-motor is shown in both single effect and double effect systems.

Abstract: An energy recovery pump-motor including an energy recovery pump and a mixed-phase motor for replacing conventional valves in fluid circuits such as an absorption refrigeration system. The energy recovery pump pressurizes a first liquid by recovering flow work energy from a second liquid. The mixed-phase motor recovers flow work energy and expansion energy from a high pressure, saturated third liquid and transfers the energy along a shaft to the pump to aid in pressurizing the first liquid. The energy recovery pump is shown in a single effect absorption refrigeration system, while the pump-motor is shown in both single effect and double effect systems.

Abstract: The present invention is directed to pump apparatus for purifying water. The apparatus includes a housing containing a reciprocating plunger pump with a permanently attached filtering module preferably containing a reverse osmosis element. A manifold with a hydraulic actuated shuttle which serves as the spool for a three way valve is attached to the pump housing. The valve provides alternate pressurization and exhaust for the rod side of the piston. The pump may be operated by a hand lever or by power mechanism.