Patent ID: 9695062
Date: 2017-07-04
CPC Classifications: C02F

Claim:
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 includes a switch that is adapted to detect removal of the cap body from the spout of the container and to deactivate the operation of the at least one LED via the electronic circuitry in response.