Abstract: An X-ray generator comprising a shielded housing having insulatingly mounted therein an X-ray tube provided with a predetermined focal spot area on a sloped target surface which is radially aligned with an X-ray transmissive window in the housing, the window having a preferred configuration for reducing preferential absorption of X-rays in a divergent beam emanating from the focal spot area of the target.

Abstract: An electron tube connector assembly including a printed circuit disc having aperture means for engaging a plurality of terminal members of an electron tube, and having printed circuit conductor means for electrically connecting at least one of the terminal members to a wire lead external of the tube.

Abstract: An air classifier system for separating mixed materials and comprising the combination of a horizontal drum or tunnel having a feed screw therein at one end of which mixed materials are deposited for movement toward the discharge end of the drum, and means for directing a flow of air through the drum at relatively high velocity for entraining and removing light materials from the drum while permitting heavy materials to be independently moved out of the drum by the screw.

Abstract: A material collecting device such as a hopper, shredder, or enclosed conveyor having an entrance opening for deposit of material into the device, an exit opening for removal of material, and a hood on the device connected with duct means for exhaust of dust particles from the material, the hood being provided with a circumferential passage through which air is drawn into the device for entraining such dust particles, and with coils or rings for removing moisture from the air, the coils being connected with a source of hot fluid or refrigerant for drying the material and/or the air within the device, and being Coanda-shaped if desired for extraction of water from a moving air stream.

Abstract: An air seal having a flexible annular seal which fits around a cylindrical rotatable member and a flexible marginal portion which slidably interfits within an opening into a substantially closed chamber whereby both rotation and pivotal movement of the member is permitted without allowing flow of an substantial amount of air between the member and chamber.