Abstract: An oven construction in which an elongated oven assembly is provided by manufacturing a plurality of oven modules at a factory location and then shipping the modules to the usage site where they are assembled together in end-to-end fashion to form the final oven assembly. Each oven module includes an outer shell and an inner shell mounted so as to be spaced apart for insulation therebetween. The shells are interconnected at one point along the length thereof, but are allowed to expand differentially along the remainder of their lengths. The outer shell is rigidly tied to a foundation but the inner shell, through any of various approaches, is allowed to slide or move relative to the foundation everywhere except the one point where it is secured to the outer shell. Each module has a bellows-type expansion joint around the periphery of one end to allow for interconnection of the modules, one to another.

Abstract: An enclosure for phosphate, caustic and other chemical solutions in treatment tanks in automobile plants comprising a steel structure mounted on the peripheral flanges of the treatment tank and a completely non-corroding shell mounted internally of the steel structure to form the enclosure. The steel structure consists of I-beams having stainless steel anchor plates secured to the inner surfaces thereof and the enclosure structure comprises a plurality of fiberglass panels secured by clips to the anchor plates and sealed internally such as by caulking to completely shield the external steel structure from corrosive vapors and sprays.

Abstract: A paint spray booth of the type having a forced air/water exchange for trapping paint overspray. A subfloor beneath the working area comprises a flat pan which is deeply flooded with water and plural central discharge tubes, the sides of which are raised above the subfloor to create a weir effect. Sludge troughs sunk into the subfloor are used to periodically drain the water from the pan and clean paint buildup from the subfloor.

Abstract: A paint spray booth of the type having a forced air/water exchange for trapping paint overspray. A sub-floor beneath the working area comprises a flat pan which is deeply flooded with water and plural central discharge tubes, the sides of which are raised above the sub-floor to create a weir effect.