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Browse Prior Art Database

Fluid and Gate

IP.com Disclosure Number: IPCOM000097399D
Original Publication Date: 1962-Nov-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Comparin, RA: AUTHOR [+3]

Abstract

A combination of at least two single-sided, monostable pure fluid amplifiers performs the Boolean And function of the input pressure signals. This is when the signals cause the main jet to separate from the solid side-walls and to exhaust into a receiver in the direction of the free jet.

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Fluid and Gate

A combination of at least two single-sided, monostable pure fluid amplifiers performs the Boolean And function of the input pressure signals. This is when the signals cause the main jet to separate from the solid side-walls and to exhaust into a receiver in the direction of the free jet.

A streaming medium flowing along a solid boundary wall tends to attach to such wall. This is based on the so-called Coanda effect. In the two interlocked monostable amplifiers, the main jet enters from the left through main inlet nozzle
11. If no input control signal X is present at the first control port 12, the jet attaches to wall 13 of the first amplifier and exhausts through the respective outlet bar X. A signal control now X causes the jet to separate from wall 13 so that the jet now attaches to wall 14 of the second amplifier. If no input control signal Y is present at the second control port 15, the jet attaches to wall 16 of the second amplifier and exhausts through outlet bar XY. The jet separates from wall 16 and exhausts through outlet X. Y only when both signals X and Y are present.

The sharp edges, between the straight sections forming the sidewalls 13 and 16, cause the jet to be bent so that the device can be made shorter than when only one curved or straight wall is used. The separating wedge 17 prevents transient output when the jet switches from wall 13 to wall 14.

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