Abstract: An oil in air test apparatus measures the quantity of oil vapor entrained in the air stream from an air compressor used to generate compressed air for a vehicle air brake system. Testing is accomplished while the air compressor is in service and mounted onto the engine of the vehicle. The test apparatus creates back pressure to simulate an operating load on the air compressor, and passes an air stream through a disposable oil in air indicator cartridge to capture oil entrained in the air stream. Visual examination of the indicator cartridge is utilized to determine the operation condition of the air compressor. The test apparatus allows the operator to determine whether or not the quantity of oil vapor carried over in the compressed air is within acceptable warranty tolerances. As a result, unnecessary warranty calls for air compressors which are passing oil within normal tolerances are prevented.

Abstract: A tamper-evident, tamper-resistant closure for an open neck container having a detachable closure cap that is adapted to open and close the dispenser end. A breakaway tether is integrally molded to the closure cap and a first closure ring which fits within the closure cap and around the container neck. A second tether is integrally formed with the closure cap and a second closure ring. The breakaway tether will rupture if this container is tampered with. Also the breakaway tether may be broken when the contents of the container is to be used. The second tether securely maintains the closure cap attached to the main closure.