Pneumatic logic element with peirce arrow function and sheffer stroke

Abstract

Pneumatic logic element with Peirce arrow function and Sheffer stroke consists of two-position, seven-port manifold, control channel, normally closed input channel, and upper, middle, and lower normally open input channels, which are connected in the initial position to upper, middle, and lower output channels. Middle output channel is blocked; lower normally open input channel is connected to pressure and contains spring that returns distributor to its initial position. Normally closed input channel is connected to the atmosphere. Upper and middle normally open input channels are connected to each other.