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Angular Position Indicator

IP.com Disclosure Number: IPCOM000093751D
Original Publication Date: 1966-Feb-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 58K

Publishing Venue

IBM

Related People

Goplen, FA: AUTHOR

Abstract

The output e(o) taken from potentiometer 14 indicates the angular position of shaft 1 having both rotational and translational freedom of movement. Rotation of 1 causes pulley 2 to drive timing belt 8 transferring an equal amount of rotation to pulley 9. The latter is keyed to potentiometer shaft 13. The slide-wire inside of 14 is connected to rotate with shaft 13 and to provide an output voltage e(o) on terminal 16.

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Angular Position Indicator

The output e(o) taken from potentiometer 14 indicates the angular position of shaft 1 having both rotational and translational freedom of movement. Rotation of 1 causes pulley 2 to drive timing belt 8 transferring an equal amount of rotation to pulley 9. The latter is keyed to potentiometer shaft 13. The slide-wire inside of 14 is connected to rotate with shaft 13 and to provide an output voltage e(o) on terminal 16.

The resistor with which the slide-wire cooperates is mounted to rotate with the outer casing of 14 which is rotatable in bearings 12 carried by support members 11. The resistor is energized by source 15 through terminals 17.

Translational as well as rotational movement of 1 imparts rotation to 13. In order to remove the effects of translational movement on re(o), support 3, in which 1 is journaled is mounted on belt 4 which drives pulley 5. Pulley 5 is keyed to the outer casing of 14. The pulley ratios are such that translational movement of 1 causes 5 to rotate the outer casing of 14 through the same angle that it imparts to 13 through 8 and 9. Therefore, translational movement is prevented from producing any relative movement between the slide-wire and resistor of 14.
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