Sectorial fastening means for a rotating gas diffuser

Abstract From the Canadian patent

A rotating gas diffuser shears fine gas bubbles from the surface thereof when the diffuser is immersed in a body of liquid and rotated therein. A plurality of plates each in the form of a section of an annulus with its lateral edges radially positioned with respect to the circular rotating gas diffuser, is supported either on the top or the bottom of the diffuser or on, both, near its perimeter. Each porous plate is carried by a plate holder that has a shape similar to its associated porous plates and with those plates de-, fines a gas plenum having an area substantially equal in extent to but no, greater than, the area of the plates. The lateral edges of the plate holders are releasably …