Pneumatic Controller Using Air Logic and a Stepping Motor
Original Publication Date: 1989-Sep-01
Included in the Prior Art Database: 2005-Jan-31
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.