Filter status techniques adapted for use with a container based filtration device

US8961781B2 · kind B2 · utility

Assignee

• BRITA LP · US

Inventors

• Benjamin Ma · San Ramon, US
• Rick T. Nishijima · Pleasanton, US
• John W. Jamieson · San Leandro, US
• Edward M. Buckley · Milpitas, US
• Teruo Hishiki · Tokyo, JP
• David Dycher · Hong Kong, CN
• Ho Pun Chung · Sha Tin, CN

Key dates

• Filing date: Sep 29, 2011
• Grant date: Feb 24, 2015
• Expiry date: May 7, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G07C3/02
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A filter status module for use with a container based filtration device includes a dispensing sensor and a user interface communicatively coupled to a processing unit. The processing unit counts a number of dispensing events, duration and/or angle of tilt signaled by the dispensing sensor and outputs a filter status on the user interface as a function of the number of dispensing events, duration and/or angle of tilt. The processing unit may further track an elapsed period of time from insertion of a new filter and output the filter status as a further function of the elapsed period of time.