Townsend and Townsend
Disposable liquid sterilizer unit
 A disposable liquid sterilizer unit incorporating an ultra-violet tube designed to generate radiation at approximately 2537 Angstroms. The unit comprises an elongated cylindrical plastic jacket opaque to ultra-violet radiation concentrically mounted about the tube to provide a chamber between the jacket and the tube for the flow of liquid to be exposed to radiation generated by the tube. The tube extends beyond the ends of the jacket and includes electrical connectors at each end for removably mounting the unit to make electrical connection with electrical connections in a casing. A seal is provided adjacent each end of the jacket against liquid flow from the chamber between the tube and the walls of the jacket to the exterior of the jacket. Inlet and outlet connections for the flow of water to and from the chamber are provided as well as a viewport through the plastic jacket. The jacket includes a central portion and two integral injection moulded end portions fixed to the central portion by an adhesive. The moulded end portions include the inlet and outlet connections. The complete unit can be readily removed from the casing and disposed of when the tube is defective or worn out. One circuit arangement provides a visual warning, while another prevents the flow of liquid past the tube when insufficient current to achieve sterilization is flowing through the tube. 
C A C
C02F A61L C02F
inventional inventional additional
James H.
Lewis