An evaporator including a side plate formed with a number of openings each having rigidly secured therein the upper end portion of one of a number of U-shaped refrigerant tubes, a cover plate attached to the upper surface of the side plate and formed, by recessing its inner surface, with a plurality...http://www.google.fr/patents/US4149390?utm_source=gb-gplus-shareBrevet US4149390 - Evaporator
