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Fluidics/Electric Read Head

IP.com Disclosure Number: IPCOM000074420D
Original Publication Date: 1971-Apr-01
Included in the Prior Art Database: 2005-Feb-23
Document File: 2 page(s) / 74K

Publishing Venue

IBM

Related People

Davies, P: AUTHOR [+2]

Abstract

A read head 1 is designed to pneumatically detect the coding of a ceramic module 2 being slid along a guide 3. Module 2 is in the form of a ceramic module having electronic components or circuitries mounted thereon. It is coded by a series of slots 4 where the number and position of the slots, illustrated as being in one of eight different positions, provides an identification of the module. Read head 1 is mounted beneath the path of travel of module 2 and has a series of nozzles 5-1 through 5-8 for directing a fluidic stream against the bottom of module 2.

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Fluidics/Electric Read Head

A read head 1 is designed to pneumatically detect the coding of a ceramic module 2 being slid along a guide 3. Module 2 is in the form of a ceramic module having electronic components or circuitries mounted thereon. It is coded by a series of slots 4 where the number and position of the slots, illustrated as being in one of eight different positions, provides an identification of the module. Read head 1 is mounted beneath the path of travel of module 2 and has a series of nozzles 5-1 through 5-8 for directing a fluidic stream against the bottom of module 2.

The construction of head 1 in association with each of nozzles 5 is the same and will be described in detail. Pressurized air is supplied to a chamber 6 which communicates with nozzle 5. A second chamber 7 is formed within read head and communicates with nozzle 5 through passage 8. Located in chamber 7 is a resilient tape 9 that is fixed at the left end, as viewed in the drawing, and has a free right end resting on ledge 13. A moveable resilient contact member 10 is located alongside tape 9 and is moveable, in the manner described hereafter, into engagement with a fixed contact member 11.

In operation, air is continuously supplied to chamber 6 and flows through nozzle 5. When, as shown at B, module 2 is adjacent head 1 and there is no slot opposite nozzle 5, a relatively high-back pressure develops in nozzle 5 which, acting through passage 8, causes tape 9 to deflect and press conta...