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Fluid Binary Memory Cell

IP.com Disclosure Number: IPCOM000095035D
Original Publication Date: 1965-Aug-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Mitchell, AE: AUTHOR [+2]

Abstract

The cell at A has two liquid reservoirs 10 and 12. These are interconnected through constricted passageway 14 and contains liquid globule 16 having a high surface tension. Globule 16 is made of material which does not wet the walls of reservoirs 10 and 12. Due to the surface tension forces only two stable positions of globule 16 are possible which may be assigned the binary values 0 or 1. Transfer of globule 16 in both directions through passageway 14 is effected by applying pressure signals to it with a working fluid from channels 18 and 20. Interposed in fixed positions between channels 18 and 20 and reservoirs 10 and 12 are porous plugs or disks 22. These permit the flow of the working fluid through them but which do not permit the passage of globule 16.

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Fluid Binary Memory Cell

The cell at A has two liquid reservoirs 10 and 12. These are interconnected through constricted passageway 14 and contains liquid globule 16 having a high surface tension. Globule 16 is made of material which does not wet the walls of reservoirs 10 and 12. Due to the surface tension forces only two stable positions of globule 16 are possible which may be assigned the binary values 0 or 1. Transfer of globule 16 in both directions through passageway 14 is effected by applying pressure signals to it with a working fluid from channels 18 and 20. Interposed in fixed positions between channels 18 and 20 and reservoirs 10 and 12 are porous plugs or disks 22. These permit the flow of the working fluid through them but which do not permit the passage of globule 16. Reservoirs 10 and 12 can be formed by generally tubular wall 24 made of, e. g., glass or plastic. The porous disks 22 can be made of, e. g., sintered glass wool or woven and felted fiberglass. Globule 16 can be a liquid metal such as mercury and the working fluid may be air, nitrogen or water.

The cell at B is generally similar to the cell at A. Cell B differs from cell A primarily in that it has three channels communicating with the reservoirs. Cell B has tubular member 26 containing from left to right rigid spacer 28, porous disk 30, ring 32 forming a first reservoir at its center, clamped center disk 34 which is preferably made of porous material, ring 36 forming a second reservoir...