Abstract: An assembly including conduit for conveying a flowable substance having a gas phase and a liquid phase, and a cone-shaped displacement member including an upstream end and a downstream end. A first flow measurement tap communicates with an area at the upstream end, a second flow measurement tap communicates with an area at the downstream end and a third flow measurement tap communicates with an area downstream of the displacement member. A device determines a first differential pressure value based on a flow measurement taken from any two of the first, second and third flow measurement taps and a second differential pressure value based on a flow measurement taken at one different tap.

Abstract: Indicia having a requirement for a high degree of precision is printed onto a sheet and is scanned or read automatically shortly thereafter. Electronic control signals result from a comparison of the actually printed indicia with a pre-defined quality standard, and are used selectively to adjust command control signals to the printer to correct indicia printed thereafter. The leading edge of sheets to which the indicia is to be printed is precisely located by a light absorption detection or sensing mechanism which controls a sheet advance motor. The indicia printed, preferably bar code, is read by an optical bar code scanner traversing the printed code.

Abstract: A power driven shaver of the type that includes a housing that has a prime mover therein, with one end of the housing supporting a transverse thin curved shield. The shield has a number of longitudinally and circumferentially spaced slots therein that are of such dimension that whiskers may extend therethrough. A number of helical shaped blades are rotated by the prime mover in close proximity to the interior surface of the shield, with the blades serving to sever inwardly projecting portions of the whisker by a rotating slicing action. The present power driven shaver is free of vibration, and exerts no uncomfortable pulling action on whiskers as they are severed, or the whiskers as they are cut are not compressed or pinched.