C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 3/20 (2006.01) B01F 3/04 (2006.01) B01F 15/00 (2006.01)
Patent
CA 2137546
A diffuser for use in submerged conditions comprises an elongate material strip made from two separate sheets (1, 2) of synthetic plastics material which are separately perforated in two lateral zones (1a, 1b and 2a, 2b) and then heat sealed together at their longitudinal edges (3, 4) and at intermediate positions (5, 6) to either side of a steel cable (7) positioned between the sheets (1 and 2). The steel cable (7) is arranged to act as a negative buoyancy aid. When air is supplied to the tubes (8, 9) they distend into an inflated condition and air passes into the surrounding medium through the tube perforations. Various other forms of diffusers are also disclosed, including one of circular design.
Lanmark (water) Limited
Swabey Ogilvy Renault
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