Abstract: A hydraulic recalculating cell has a substantially vertical inlet portion, an inclined portion connected by its lower end with a lower end of the inlet portion, a further substantially vertical portion connected by its upper end with an upper end of the inclined portion above the first connection, and a divider including two downwardly open pipes connected with the further pipe.

Abstract: A binary fluidic counter which produces two outputs, each having a frequency one-half the frequency of the supply. The counter incorporates a pair of bi-stable fluidic amplifiers, the first receiving a pulsed fluid supply while the second receives a continuous fluid supply and has inputs directly connected with the outputs of the bi-stable director. The second bi-stable amplifier acts as a memory device. Feedback circuits respectively interconnect the outputs of the second memory device with the inputs of the first amplifier. Monostable fluidic OR gates interposed in the feedback circuits respectively permit and prevent interconnection of the outputs of the second amplifier with the inputs of the first amplifier in relation to the pulse signals being transmitted from the first to the second amplifier.

Abstract: In order to determine the constituent gases of a gas mixture, the test gas is employed as the working fluid for an astable fluidic oscillator in a series of runs taken at different temperatures. The pulse repetition frequencies observed are related to similar pulse repetition frequencies observed when air is employed as the working fluid at corresponding temperatures and pressures. By this means, a plurality of equations can be written and solved for the unknown percentages. The characteristics of a given astable multivibrator can readily be predetermined and recorded on a graph in a table to facilitate preparation of equations which can be solved by ordinary simultaneous equation techniques.

Abstract: 1. A fluid fuze comprising:A. a fluid detector,B. a pure fluid computer, said computer having an input connected to said uid detector and an output,C. said pure fluid computer including a bi-stable fluid amplifier and at least one pulse converter, andD. a fluid utilization device connected to an output of said pure fluid computer.