Abstract: A motor driven pump is described having an improved and simplified construction of pump casing and impeller with easy adaptability of the components over a wide range of capacity, an improved construction of the motor stator and rotor with structure which is adaptable for selection for use over a wide range of input, improved structure for alignment and support of the motor stator and of the motor rotor from a reference element referred to as a post, and without compounding and piling up of tolerances, and with adequate provisions for cooling and for pressure balancing.

Abstract: A motor driven pump is described having an improved and simplified construction of pump casing and impeller with easy adaptability of the components over a wide range of capacity, an improved construction of the motor stator and rotor with structure which is adaptable for selection for use over a wide range of input, improved structure for alignment and support of the motor stator and of the motor rotor, adequate provisions for cooling and for pressure balancing and which may be made explosionproof, if desired.

Abstract: A centrifugal pump is described having an improved and simplified construction of pump casing and impeller with easy adaptability of the components over a wide range of capacity, the pump casing preferably being of stamped sheet metal with welded inlet and outlet connections, preferably of pipe of selected sizes, the pump casing preferably being of circular, as opposed to volute, shape in transverse cross section and with an inserted cut water tongue or plate capable of ready accommodation in shape to different impellers for different selected heads or viscosities so that each size of casing can be employed over a wide range of inputs and of delivered heads or volumes.