Method and apparatus for the generation of ultrasonic energy fields within circular structures containing a liquid
AssigneePaper Quality Management Associates
InventorsJohn Eugene Poniatowski, Susan Elizabeth Poniatowski, John William Walkinshaw
Life of this patent
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Abstract
A resonant chamber that produces an ultrasonic energy field about a central axis of the chamber to separate contrary matter from a working material. The resonant chamber has a circular cross section and utilizes a series of transducer elements to generate an ultrasonic transverse wave disposed about the internal longitudinal axis of the chamber. In addition, a driver circuit is provided that is able to efficiently excite the transducer elements to generate the ultrasonic transverse wave with a minimum of heat dissipation and power loss.
Claims35
A system for separating contrary matter from a working material, comprising:
- a processing element having a circular cross-section, an inner passage, and an outer wall, a first portion of the processing element being adapted to communicate with a working material source and a second portion of the processing element adapted to provide an egress for the working material;
- and
- a plurality of piezoelectric film transducers arranged and coupled to the outer wall of the processing element to form a regenerative phased array assembly for producing an energy field within the inner passage of the processing element, when activated, to cause the contrary matter to separate from the working material.
An apparatus for processing waste paper to cause a selected particulate to separate from a lignocellulosic material, comprising:
- a processing element having a longitudinal axis, a circular cross-section and an outer wall, said processing element having an inner diameter selected for accepting the lignocellulosic material;
- and
- a first set of transducer elements containing a plurality of piezoelectric elements coupled to the outer wall of the processing element and disposed along said longitudinal axis at a selected inter-element spacing for generating an energy field within the processing element, the energy field having a transverse waveform centrally disposed about the longitudinal axis of the processing element to cause the selected particulate to separate from the lignocellulosic material, wherein the selected inter-element spacing between sequential elements of like phase is about equal to an internal circumference of the processing element.
Dependencies are inferred from the claim text.