IMPROVEMENTS IN OR RELATING TO FLUID CONTROL AMPLIFIERS

1,219,627. Valves. TOWLER HYDRAULICS Ltd. 2 June, 1969 [14 June, 1968], No. 28494/68. Heading F2V. [Also in Division G4] A fluid logic element has a number of coaxial chambers of various cross-sectional areas and containing individually movable sliding elements 3-7 and a ball 8. The cross-sectional...

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1. Verfasser: DAVID ANTHONY COCKERAM
Format: Patent
Sprache:eng
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Zusammenfassung:1,219,627. Valves. TOWLER HYDRAULICS Ltd. 2 June, 1969 [14 June, 1968], No. 28494/68. Heading F2V. [Also in Division G4] A fluid logic element has a number of coaxial chambers of various cross-sectional areas and containing individually movable sliding elements 3-7 and a ball 8. The cross-sectional areas of elements 3 and 4 lying on one side of ball 8 are greater than that of the element 7 on the other side. Ball 8 seats against the shoulders of chamber 12 or 13 to pass fluid from passage 19 or 20 to output 23. By suitable connection of certain of the passages 16-22 to control signal inputs and constant pressure supplies, and by venting others, output 23 represents the logic function NOR, OR, AND, or NAND. The connections are described with reference to Figs. 2-5 (not shown) respectively. Reference is made to mechanical inputs through either of the ends of the element.