Invention Grant
US09279780B2 Filters, filter assemblies, filter systems and methods for identifying installation of qualified filter elements
有权
过滤器，过滤器组件，过滤器系统和用于识别合格过滤元件安装的方法
- Patent Title: Filters, filter assemblies, filter systems and methods for identifying installation of qualified filter elements
- Patent Title (中): 过滤器，过滤器组件，过滤器系统和用于识别合格过滤元件安装的方法
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Application No.: US13864694Application Date: 2013-04-17
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Publication No.: US09279780B2Publication Date: 2016-03-08
- Inventor: Jared M. Gwin , Sainath Reddy Racha , Gregory D. Shope , Yiming Z. Jiang
- Applicant: Cummins Filtration IP, Inc.
- Applicant Address: US IN Columbus
- Assignee: Cummins Filtration IP, Inc.
- Current Assignee: Cummins Filtration IP, Inc.
- Current Assignee Address: US IN Columbus
- Agency: Foley & Lardner LLP
- Main IPC: G01R27/28
- IPC: G01R27/28 ; G01N27/02 ; B01D35/143 ; G01N27/04 ; B01D36/00 ; G01N27/07 ; G01N33/28
Abstract:
A filter assembly has a qualified filter element that filters fuel, a filter housing for the qualified filter element and a water-in-fuel sensor that senses presence of water in the filter housing. An electrical resistance of the water-in-fuel sensor changes based upon whether the qualified filter element is installed in the housing. A filter assembly can also have a plurality of magnetic elements disposed on at least one of the filter housing and the qualified filter element. A plurality of wires are disposed on at least the other of the filter housing and the qualified filter element. The control circuit determines that the qualified filter element is installed in the filter housing based on a change in the electrical current in the plurality of wires.
Public/Granted literature
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