Abstract: Apparatus and method utilize an ultrasonic operation to process articles. Processing tanks are arranged serially, each having an interior extending vertically downwardly for receiving articles delivered into the tank. A plurality of baskets carry the articles to the consecutive tanks, and an overhead support arrangement at each tank receives each basket suspended from a corresponding support placed at a first location outside and above the tank. Each support is moved in a vertical direction between the first location, outside the tank, wherein the support is in position to receive a corresponding basket suspended below the support, and a second location outside the tank and below the first location, wherein the corresponding basket is placed within the tank, while the support remains outside the tank, whereby the articles are placed sequentially into each tank, while the supports remain overhead, outside the tanks, during a processing operation.

Abstract: An improvement in ultrasonic cleaning in which articles to be cleaned are immersed in a bath subjected to ultrasonic energy emanating from ultrasonic transducers coupled to a vibratory diaphragm contiguous with the bath, the ultrasonic transducers being in multiple sets for providing ultrasonic energy at multiple ultrasonic frequencies at interspersed locations spaced apart a distance enabling the multiple sets of transducers simultaneously to transmit to the bath ultrasonic energy at the multiple ultrasonic frequencies without deleterious interference arising out of the simultaneous presence of the multiple ultrasonic frequencies.

Abstract: An improvement in ultrasonic cleaning in which articles to be cleaned are immersed in a bath subjected to ultrasonic energy emanating from ultrasonic transducers coupled to a vibratory diaphragm contiguous with the bath, the ultrasonic transducers being in multiple sets for providing ultrasonic energy at multiple ultrasonic frequencies at interspersed locations spaced apart a distance enabling the multiple sets of transducers simultaneously to transmit to the bath ultrasonic energy at the multiple ultrasonic frequencies without deleterious interference arising out of the simultaneous presence of the multiple ultrasonic frequencies.