Abstract: A hot plate with a base and a heater plate, both the heater plate and the base being hollow and filled with an expanded and voluminously enlarged foam epoxy encapsulating the lead and power wires and pressing the electric resistance heater ribbon firmly against the ceramic top deck and extruding around the closure plate to seal and secure the entire heating plate and base in single unitary units. The method disclosed includes the pouring of the foaming epoxy system wherein the epoxy expands and creates a pressure within the cavities or chambers of the hot plate and urges the resistance heater firmly against and in intimate engagement with the top deck of the ceramic panel by reason of the growth of the foaming epoxy which seals and insulates against heat migration.

Abstract: A substrate stripping and cleaning apparatus including a closed bowl with an exhaust vent and a liquid drain, a rotating turntable in the bowl carrying baskets of substrates, a spray post with multiple fluid passages, orifices and spray nozzles directing rinsing spray outwardly against the turntable and substrates, rinsing water manifold pipes on the turntable and revolving therewith and having nozzles directing rinsing water to all portions of the inner surfaces of the bowl, the pipes being supplied with water through passages in the drive shaft for the turntable.

Abstract: This invention pertains to a hot plate and more specifically to an industrial hot plate for use in highly corrosive environments where chemicals of high acidity or high alkalinity are employed. An epoxy foam is utilized both to thermally isolate the heated surface from the base structure and to protect the heating element and the associated electrical circuit from damage from the active chemical agents that may be involved upon using the instant hot plate.