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An Air Driven Stepping Motor

IP.com Disclosure Number: IPCOM000094207D
Original Publication Date: 1966-Jul-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Cole, JN: AUTHOR

Abstract

This stepping motor is controlled as well as driven by air streams. The motor comprises a turbine form of driven rotor 8 and a pair of air pressure input openings 9 and 10. One air stream is used for stepping control and the other for driving. The pulse of driving air is brought in at 10 through valve 11 and directed through input port 12 tangentially to blades 13 of the turbine and causes rotor 8 to turn. Exhaust port 14 is spaced upstream from port 12 and allows the exhaust air to escape.

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An Air Driven Stepping Motor

This stepping motor is controlled as well as driven by air streams. The motor comprises a turbine form of driven rotor 8 and a pair of air pressure input openings 9 and 10. One air stream is used for stepping control and the other for driving. The pulse of driving air is brought in at 10 through valve 11 and directed through input port 12 tangentially to blades 13 of the turbine and causes rotor 8 to turn. Exhaust port 14 is spaced upstream from port 12 and allows the exhaust air to escape.

Rotor 8 is on shaft 15 and is encased in housing 16. In this a pair of oppositely-arranged sidewall secondary air input 9 and exhaust port 17 are in an aligned formation. Air is thus directed against the side of rotor 8 to hold rotor 8 in a selected position. Such is according to which of a series of step division holes 18 is selected around the side of rotor 8. In alignment with ports 9 and 17 of housing 16, there is positioned in rotor 8 one of several circularly arranged holes
18. These are suited to be lined up with the exterior housing holes and, in this fashion, a stream of position control air directed through both housing 16 and rotor 8 hold the latter in a selected position. This holding air provided for detenting rotor 8 is continually flowing into port 9.

When the holes in housing 16 and rotor 8 line up with the air flowing directly through this series of three aligned holes, then rotor 8 is held in position accurately. When another step...