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Pneumatic Controller Using Air Logic and a Stepping Motor

IP.com Disclosure Number: IPCOM000037940D
Original Publication Date: 1989-Sep-01
Included in the Prior Art Database: 2005-Jan-31
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Breyfogle, FW, III: AUTHOR [+3]

Abstract

A device that can control a plurality of ports of air pressure in a predetermined and sequential manner is shown in Fig. 1. The device, as shown, controls eight pressure functioning devices (not shown) from eight ports 6. As a functioning unit stepping motor 1 positions ported cylinder 3 to 1 of 256 different radial positions. A particular row of eight ports 2, disposed in a line parallel to the axis of the cylinder, line up with eight similarly disposed ports 6 in housing 5, allowing air pressure to escape through these ports in a programmed fashion. Cylinder 3 can accommodate, for example, 256 different axially extending hole patterns.

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Pneumatic Controller Using Air Logic and a Stepping Motor

A device that can control a plurality of ports of air pressure in a predetermined and sequential manner is shown in Fig. 1. The device, as shown, controls eight pressure functioning devices (not shown) from eight ports 6. As a functioning unit stepping motor 1 positions ported cylinder 3 to 1 of 256 different radial positions. A particular row of eight ports 2, disposed in a line parallel to the axis of the cylinder, line up with eight similarly disposed ports 6 in housing 5, allowing air pressure to escape through these ports in a programmed fashion. Cylinder 3 can accommodate, for example, 256 different axially extending hole patterns. Stepping motor 1 rotates cylinder 3 to position a selected one of the 256 hole patterns such that when pressurized air is supplied at input 4, air can escape only through the holes of the selected pattern. Positioning of the stepper motor 1 is controlled by digital logic using any of the different arrangements known in the art.

The above concept can be extended to multiple cylinders if additional positions are desired. For example, two cylinders can be stacked axially to obtain 65,536 different 16 hole patterns.

Disclosed anonymously.

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