Patent ID: 9475708
Filing Date: 2016-10-25
CPC Classification: C02F

Claim Text:
1. A biocidal fluid purification cap for a fluid container, including: a cap body including an engagement feature for removably attaching the cap body to a mating engagement feature on a spout of the fluid container to hermetically close a spout opening, at least one LED adapted to emit light in the UV-C range, electronic circuitry for driving said at least one LED, and a power supply for the electronic circuitry, wherein said at least one LED is arranged in said cap body so as to be separated from the environment by an UV-transparent window provided in the cap body such that light emitted from said at least one LED enters the opening of the spout when the cap is attached to the spout of the container, and wherein said cap body further includes a first fluid opening to the outside of the cap body and a second fluid opening to the spout opening of the container when the cap is attached to the spout, and a fluid channel extending between the first fluid opening and the second fluid opening and passing between the UV-transparent window and a further UV-transparent window facing the opening of the spout to allow, in operation, the light emitted from the at least one LED to pass through the fluid flowing in the channel before entering the spout opening of the container.