Abstract: An apparatus removing air from pressurized gas, including a pressure housing removably securable to a connection cap, a removable filter housing in the housing with moisture removing material in the filter housing, and an external indicator indicating that the apparatus is not removing at least some moisture. The cap includes an air flow exit for air which has passed through the filter housing. The indicator is on the cap and includes visible material which changes color when moisture is present. An aspirator tube diverts some air flow from the cap air flow exit into the indicator visible color changing material. The filter housing is transparent or translucent and includes oil removing material and a sintered disk before the moisture removing material.

Abstract: A seal for an opening defined by a sidewall portion of the pressurizable tank. The tank contains desiccant for drying gases which pass through the desiccant. An elongate antenna extends from an interior portion to an exterior portion of the tank and is used for carrying microwave energy to the desiccant for regeneration of the desiccant. The seal has an insulator with an interior surface for receiving engagement with the antenna at the opening of the tank. In one embodiment, the interior surface of the insulator is tapered such that a distance between opposing portions of the insulator reduces as the insulator extends in a direction through the opening toward the exterior of the tank. The antenna has a cross sectional dimension which reduces in size as the antenna extends in the direction through the opening toward the exterior of the tank.

Abstract: An air filter dryer for adsorbing moisture from an air flow of the type typically found in a pneumatic power system comprises a housing having an inlet fitting and an outlet fitting arranged such that the filter dryer can be installed directly in line with system piping. The filter dryer also includes a series of filters arranged symmetrically at each end of the housing. Included in the series of filters are dispersion filters which collect moisture in the air flow and also disperse the air evenly across the housing. An oil removal filter is located adjacent each dispersion filter in the filter arrangement, and acts to remove any oil contaminants from the air flow. This filter dryer further includes a silica gel desiccant, located between the respective oil removal filters, which adsorbs moisture from the air stream. The air then passes through the second symmetrically arranged series of filters, and exits through the outlet fitting.

Abstract: There is disclosed a silencer for a pneumatic system, including a sound muffler containing a primary filter and removable cartridge containing an oil mist reclassifying filter.

Abstract: There is disclosed an air dryer system for removing moisture from compressed air. The system includes a coil means including a plurality of axially spaced convoluted tubing sections wherein each tubing section has an inlet adapted to be coupled to the compressed moist air to be dried and an outlet. The system further includes a cooling means for reducing the temperature of the moist air within the tubing sections for causing the moisture within the compressed air to condense for forming moisture laden air at the outlets, and a moisture separater directly connected to each of the tubing sections for removing the condensed moisture from the moisture laden air to thereby provide dried air for use by pneumatically operated or controlled tools or the like.

Abstract: A maintenance alarm actuator for a fluid filter actuates an alarm when contaminant has accumulated in the filter. The actuator is connected to fluid lines upstream and downstream of the filter. Included in the actuator are a valve and a biasing mechanism which biases the valve. The valve responds to the difference in the line pressures, and the actuator is initially triggered when the pressure of the upstream line exceeds that of the downstream line by an amount sufficient to overcome the force of the biasing mechanism. When initially triggered, the actuator vents the downstream line to the alarm, thereby increasing the difference in line pressure and causing itself to trigger completely.

Abstract: An improved interlocking assembly for an air filter, air lubricator, filter-regulator piggyback or the like which includes a pressure vessel normally retained by a head member and an interlocking collar. The pressure vessel nests in the collar to prevent accidental separation of the head member and pressure vessel. Locking tabs on the collar from being removed unless it is sequentially raised, rotated and lowered.