Apparatus for introducing a gas into a fluid
Patent 4818446 Issued on April 4, 1989. Estimated Expiration Date: 
October 29, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 29, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2815943 3837629 3915862 Sewage treatment aeration systems Supporting arrangements for porous diffusers Waste water aeration device Apparatus for the intermittent aeration of sewage Aquarium airstone device Pipe support Apparatus for diffusing gases into liquids Patent #: 4489016 InventorsAssigneeApplicationNo. 07/113972 filed on 10/29/1987US Classes:261/122.2With closable aperturesExaminersPrimary: Miles, Tim R.Attorney, Agent or FirmInternational ClassB01F 3/04 (20060101)Foreign Application Priority Data1986-10-30 DEAbstractAn apparatus for introducing gases in the form of fine bubbles into a fluid is described, in which a diffuser pipe for a perforated distributor hose is mounted on a gas supply pipe. The diffuser pipe is constructed in one piece, extends transversely across the gas supply pipe, and is attached to the same by means of clamping elements. An opening for the passage of the gas is provided between the diffuser pipe and gas supply pipe. A pair of plugs positioned in the diffuser pipe define a flooding chamber at each end of the pipe and a gas-carrying chamber positioned medially therebetween. The apparatus is particularly suitable for the aeration of activation tanks for waste water. | |
