Abstract: A centrifuge for separation of two liquid phases of different specific gravities to be removed separately; the separation chamber has a first subset of openings communicating with a skimmer and a second subset of openings communication with a collector. In one position, a movable barrier plate covers the inner portion of the first subset and the outer portion of the second subset to direct the heavier liquid to the skimmer and the lighter liquid to the collector. Changing the barrier to a second position where the situation is reversed selectively directs the lighter liquid to the skimmer.

Abstract: A tone arm assembly of the type employed in phonograph assemblies and the like, wherein the tone arm assembly is supported on a unipivot bearing assembly having a pivot point coinciding with an imaginary horizontal line extending through a center of gravity of the tone arm assembly, with the horizontal line extending perpendicular to a longitudinal axis extending through the tone arm assembly from a pick-up cartridge positioned at one end to a counterweight positioned at an opposite end thereof.

Abstract: Apparatus for air navigation to a point of known location which is separated from a VOR beacon of known location. The apparatus comprises storage means for storing signals representative of, respectively, the known locations of said point and said VOR, an estimated ground speed, an estimated range-to-go to said point, and an estimated course to said point, means for receiving from a VOR signal receiver/VOR bearing generator a signal representative of the current bearing of said VOR beacon, a bearing change generator for generating a signal that is representative of the change in the VOR bearing, a course estimator for generating a signal representative of an updated course heading, a range-to-point estimator for generating a signal representative of the range-to-point, and control means for controlling the bearing sampling and for activating the course estimator at predetermined intervals.