Abstract: Apparatus for simulating the operational characteristics of different tools in the rehabilitation therapy of damaged limbs by simultaneously carrying out, in coordinated fashion, several muscle and joint movements, which comprises:(a) an angularly adjustable shaft mounted for full rotation in either direction about a fixed axis;(b) a rotation register for measuring the degree of rotation of said shaft;(c) a brake responsive to an applied voltage for applying a constant pre-determined torque resistance to said shaft corresponding to the amount of applied voltage;(d) a device for selectively varying the amount of said voltage at a constant value such that said corresponding torque resistance is maintained at a constant value within a range useful for rehabilitation therapy; and(e) an accessory coupler on one end of said shaft for detachably receiving and supporting corresponding coupler elements of a plurality of tool simulator accessories of different frame and handle sizes and/or configurations.

Abstract: A method and apparatus for the rehabilitation of damaged limbs for use in the operation of a tool wherein accessories with handles corresponding to the handles of familiar tools are attached to a shaft in a manner such that the movements of the handle corresponding to the normal operation of the tool product rotation of a shaft. A preselected resistance is applied to the rotation of the shaft by electrical, pneumatic, hydraulic, or mechanical means, and the resistance and the accessory attached can be varied in accordance with the capability of the damaged limb.

Abstract: A method and apparatus for the rehabilitation of damaged limbs for use in the operation of a tool wherein accessories with handles corresponding to the handles of familiar tools are attached to a shaft in a manner such that the movements of the handle corresponding to the normal operatin of the tool product rotation of a shaft. A preselected resistance is applied to the rotation of the shaft by electrical, pneumatic, hydraulic, or mechanical means, and the resistance and the accessory attached can be varied in accordance with the capability of the damaged limb.

Abstract: This application illustrates staging of injector type evaporative heat exchangers in such a way that the water to have heat extracted from it flows through the stages in series but comes into contact with a new volume of air at each stage. Dramatic reductions in size of unit required to deal with high loads is achieved without increase in horsepower requirements.

Abstract: An air pumping and scrubbing apparatus which is suitable for use in spray paint booths is described. This apparatus uses liquid sprays directed into a conduit to cause an air pumping action to inject air into the conduit and dis-discharge to atmosphere using water pressure to move the air so as to avoid the necessity for any moving parts or electrical corrections in and around the air stream. The liquid sprays impinge on mist eliminator strips and are recovered along with foreign material from the air while the air is exhausted downstream of the strips. A novel transfer plate arrangement is provided between the strips and a sump to minimize foreign material buildup on structual surfaces while allowing stratification in the sump; and novel baffle means are provided to cause a controlled air blowback across the sump to facilitate collection of the floating material therein.