Patents Assigned to Aquatec-Maxcon Pty Ltd
  • Patent number: 12246293
    Abstract: An elongate diffuser is disclosed comprising a diffuser body and a membrane attached to the diffuser body. The membrane is connected to the diffuser body so that introduction of gas at a working pressure into the diffuser displaces part of the membrane from contact with the diffuser body to provide an elongate sealed compartment between the membrane and a surface of the diffuser body. The compartment has a first lateral side interface region where the membrane contacts the diffuser body, a laterally intermediate region where the membrane is spaced apart from the diffuser body and a second lateral side interface region where the membrane contacts the diffuser body. The diffuser body surface which bounds the compartment comprises a recessed portion which is recessed away from the membrane between the first second lateral side interface regions.
    Type: Grant
    Filed: November 16, 2022
    Date of Patent: March 11, 2025
    Assignee: Aquatec Maxcon Pty Ltd
    Inventors: Gregory Johnston, David Yule, Kenneth Roy Wildbur
  • Patent number: 11529593
    Abstract: An elongate diffuser (10) comprises a diffuser body (30), and a membrane (20) attached so that introduction of gas at a working pressure into the diffuser displaces part of the membrane (20) from contact with the diffuser body (10) providing an elongate sealed compartment (50) between the membrane (20) and a surface (32) of the diffuser body (30). The gas can pass from the compartment (50) through the membrane (20) for aeration of fluid in which the diffuser (10) is immersed. The diffuser body surface (32) which bounds the compartment (50) is recessed away from the membrane (20) in use, to contribute to the lateral cross sectional area of the compartment (50) and facilitate distribution of gas along the diffuser by the compartment (50). An automatic purge valve for purging water from a gas feed pipe of a diffuser is also disclosed.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: December 20, 2022
    Assignee: Aquatec Maxcon Pty Ltd
    Inventors: Gregory Johnston, David Yule, Kenneth Roy Wildbur
  • Patent number: 6406005
    Abstract: A diffuser for aerating a fluid, and particularly for aeration in waste water treatment tanks, is formed in an elongate configuration by manufacturing a base plate from an extrusion cut to the desired length. A perforated elastomeric membrane is secured to the base plate by pressing sealing strips along the elongate edges of the membrane into corresponding grooves formed in the base plate extrusion. The ends of the membrane are sealed to the base plate by end strips or clamps. Air is introduced through apertures in the base plate causing the membrane to inflate away from the base plate forming an interior compartment for the passage of air along the diffuser. Apparatus for securing the diffuser to a horizontal header pipe is also described.
    Type: Grant
    Filed: August 4, 1999
    Date of Patent: June 18, 2002
    Assignee: Aquatec-Maxcon Pty Ltd
    Inventors: Thomas Urie Lawson, Mark Monier Michael
  • Patent number: D872908
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: January 14, 2020
    Assignee: AQUATEC MAXCON PTY LTD
    Inventors: Gregory Johnston, David Yule, Kenneth Roy Wildbur