Abstract:
Electrical apparatus for reducing the drift in the set point of an electrical bridge type conductivity sensor utilizing a pulse producing circuit (e.g. an astable multivibrator type switching device) to provide an AC voltage of very short duration to the conductivity cell electrodes for minimizing the cumulative polarization thereof. Pulse lengthening circuitry is also provided to assure that the relatively short output pulses from the bridge circuit are of sufficient duration to properly operate apparatus for injecting an additive product into the conductive medium.
Abstract:
A combination venturi and spray nozzle for drawing a liquid cleanser into a high pressure water flow and then forming the combined flow of water and aspirated cleanser into a spray pattern for use in a cleansing operation.
Abstract:
DIETERGENT COMPOSITIONS FOR MECHANICALLY CLEANING HARD SURFACES (E.G.DISHES) ARE CHARACTERIZED BY THE PRESENCE THEREIN OF A MIXTURE OF METALLIC SALT OF CITRIC ACID (E.G. SODIUM CITRATE) AND WATER SOLUBLE POLYMERIC, ORGANIC POLYETECTROLYTE (E.G. HYDROLYZED MALEIC ANHYDRIDE POLYMERS). THIS MIXTURE PERMITS THE REDUCTION OF OR ELIMINATION OF CONDENSED PHOSPHATE SALTS COMMONLY USED IN DETERGENT OMPOSITIONS OF THIS TYPE (E.G. MACHINE DISHWASHING DETERGENTS).
Abstract:
Apparatus for processing (e.g., cleaning, degreasing) workpieces which are supplied to the apparatus in containers or tote boxes includes a frame for removably engaging the tote box and means for continuously rotating the frame so that the workpieces are progressively and gently dumped into a perforated processing chamber and subsequently returned to the tote box. The processing chamber comprises a first inclined surface for receiving and spreading the dumped workpieces into a less confined area upon the partial rotation of the frame (whereupon the processing of parts may be commenced) and a second inclined surface for returning the processed workpieces to the tote box upon the further rotation of the frame. Methods for such processing, as well as carousel and conveyor systems incorporating such apparatus, are also disclosed.