Abstract: A high energy x-ray tube includes an evacuated chamber (12) containing a rotor (34) which rotates an anode (10) in the path of a stream of electrons (A) to generate an x-ray beam (B) and heat. The rotor includes an armature (36) which rotates around a stationary rotor support (40). An emissive coating is formed on the rotor by depositing an iron Fe.sub.3 O.sub.4 oxide plasma onto the surface of the armature. Heat generated in the anode during the production of x-rays is conducted through the anode and the rotor to the emissive coating which irradiates the heat across vacuum, thereby increasing the lifetime of the tube. A stator (32) generates an oscillating magnetic field which induces opposing fields in the Fe.sub.3 O.sub.4 coating to create the rotational forces to rotate the anode.

Abstract: A combination of hindle shell and hindle sphere test bodies are employed to test optical surface quality or optical figure of a test optic having a convex hyperboloid reflective surface. A hindle sphere or array of hindle spheres is used to test an outer portion of the reflective surface. A subaperture hindle shell is used simultaneously with the hindle spheres to test the central portion of the reflective surface that is untested by the hindle spheres alone. The test optic may be coupled to a rotator to facilitate testing of the outer portion of the reflective surface where the hindle sphere is a segment of a full hindle sphere. A single hindle shell can test the reflective surface without the aid of a hindle sphere by employing a translator. The translator is used to decenter the test optic from the hindle shell. The translation results in non-null test results, which are analytically predictable and correctable by testing apparatus.

Abstract: An adapter is insertable into an existing fluid line system at a quick connector coupling joint. The adapter has a male section, which is configured to connect to the female connector body of the quick connector coupling, and a female section, which is configured to receive the male member of the existing quick connector coupling. A middle section disposed between the male and female members houses functional elements desired to be added to the fluid line. One such element is a check valve which allows flow in only one direction through the fluid line.

Abstract: A filter press comprises a main frame having upper side bars for movably supporting a plurality of plates in horizontally stacked relation. The plates are moved to open the filter press by plate transporting trolleys which are supported on the upper side bars. Light emitters are mounted at one end of the press on each side bar and light detectors are mounted at the opposite end of the press on each side bar and are aligned to receive light from the light emitters. Shutters are coupled to the plate transporting trolleys such that the light from the light emitters is normally blocked by the shutters. The shutters are opened for a brief period of time when the plate transporting trolleys are moved into engagement with one of the filter plates such that plate engagement signals are generated by the light detectors.