Browse Prior Art Database

Bidirectional Position Indexing Device

IP.com Disclosure Number: IPCOM000077034D
Original Publication Date: 1972-May-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Malmros, GVA: AUTHOR

Abstract

Bidirectional emitter operation is provided by a specially contoured gear arrangement with a flexible armature follower. The sharp return of the flexible armature indicates physical position, by giving an impulse that is relatively independent of the indexing wheel velocity.

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Bidirectional Position Indexing Device

Bidirectional emitter operation is provided by a specially contoured gear arrangement with a flexible armature follower. The sharp return of the flexible armature indicates physical position, by giving an impulse that is relatively independent of the indexing wheel velocity.

Fig. 1 shows a top view of a toothed gear or wheel 10 having diagonally cut teeth such as 11 - 14. Flexible armature 15, shown in Fig. 2, of the magnetic impulser has a tooth 16 extending into the path of the diagonal cut teeth 11 - 14 of wheel 10. As 10 rotates, armature 15 is cammed outward by engagement between 16 and one of the teeth of 10, thereby pressing the end of 16 against one side of straddling yoke 18, as shown in Fig. 3. The turning of 10 and thus movement of teeth 11 - 14 passes the tip of the extended armature tooth 16 so that the armature will snap away from straddling yoke 18, providing a rapid change of flux in magnetic core 19 which is detected by coil 20. The voltage peak generated in 20 indicates an increment of movement.

Reverse rotation of 10 causes 16 to slide between the teeth 11 - 14 and the snapping action to take place on the opposite side of the indexing tooth wheel. Fig. 1 shows the extreme extended position for 16 at 16A for downward movement of 10, while 16B shows the extended position of 16 for upward movement of 10. By using oppositely oriented magnetic flux paths for 18 - 20, an opposite polarity of output pulse is prod...