Abstract: A filter of a structure to remove extremely fine solid particulate matter suspended and carried by flowing compressed air which air stream has been previously treated so that it is essentially dry and liquid free. The filter is designed to operate efficiently on a continuous basis without prematurely clogging and is capable of removing all solid particulates larger than 1 micron mean diameter (0.00004 inches mean diameter) and a substantial number of particles of submicronic size.

Abstract: The system for removing carbon monoxide from compressed air comprises two towers, each of which has a section containing a desiccant and an adjacent section containing hopcalite for converting the carbon monoxide to carbon dioxide. A four-way, reversible main valve communicates with the desiccant end of either tower. The hopcalite end of the towers is connected through a pressure reducer which reduces pressure of all the compressed air in the system. After the compressed air is dried and the carbon monoxide removed, the air passes through the desiccant containing moisture from a previous cycle so as to be rehumidified for its exit from the main valve and so as to regenerate the desiccant for a reverse cycle. The two towers may be side by side or may be concentrically positioned, in which case a common heat conducting wall assists in drying the moisture containing desiccant. The system operates with no loss of air and with no net gain or loss of moisture in the system.

Abstract: A radiation detection device comprises a radiation source and a plurality of detectors and crystals positioned thereabout to simultaneously detect certain known wavelengths. Each detector emits a signal representative of the intensity of the detected wavelength and a summing means adds the signal intensities together to give a unitary output signal. This summed output signal can then be used as a material sorter through a direct read out or can go into a function circuit which compensates an X-ray thickness gauge for changes in composition. In the latter situation, a function circuit output can be fed forward to control the machinery responsible for producing the thickness obtained.

Abstract: A valve structure comprises an elongated housing having a passage extending therethrough, and a control member mounted in the passage for rectilinear movement with respect to the housing. The housing has a plurality of spaced valve ports extending therethrough in communication with the housing passage. A plurality of sealing means are non-uniformly spaced along the length of the control member for movement therewith, with each of the sealing means sealingly engaging adjacent wall surfaces of the housing passage. The sealing means in one position of the control member define a given flow circuit among the valve ports, and in another position of the control member its sealing means define a different flow circuit among the valve ports.