Abstract: A flowmeter for measuring fluid flow rates in a controlled environment. The flowmeter has an inlet and an outlet and has a vertically disposed conduit and an appropriately dimensioned float disposed within the conduit to move vertically therein. The float moves in response to the opposing forces of the weight of the float and an upward force exerted on the float by an upward fluid flow longitudinally traversing the conduit. The flowmeter also comprises an inlet end stop disposed at the inlet end of the conduit.The inlet end stop comprises a base section and a flow-divider section, and, preferably, an upright section. The flow-divider section comprises a raised, transversely extending partitioning member. The partitioning member obstructs the vertical fluid flow emerging centrally from the bore thereby causing the fluid flow to diverge into a plurality of flow streams which divergently angle outwardly and upwardly toward the tapered inner surface of the conduit.

Abstract: A circuit for electronically braking an AC motor. The circuit includes a controlled rectifying means for applying DC to the motor and a control means for turning the rectifying means on after deactuation of the motor for a timed interval determined by the charging rate of a timing capacitor through a variable resistance.

Abstract: A peristaltic pump is disclosed which facilitates quick loading of a compressible tubular conduit through which fluid may be pumped. The pump includes a pair of reaction members pivotally mounted on a base plate for movement between open and closed positions relative to a rotor, the reaction members being releasably retained in their closed positions by a locking plate. The compressible tube partially encircles the rotor and has its ends releasably engaged by clamping means which prevents axial movement of the tube and is adapted to accommodate tubes of different diameter.