No filter no run fluid filtration system
AssigneeCummins Filtration IP, Inc.
InventorsShubha Agrawal, Hariprasad Mohan Bhalerao, Amit Shashikant Wankhede
Life of this patent
Estimating the term…
Abstract
A filter system including a designated filter cartridge having a geometric projection, a flow restriction valve that controls fluid flow out of the filter system, and a priming pump configured to prime the filter. The flow restriction valve includes an opening keyed to the geometric projection such that the geometric projection engages the opening and actuates the flow restriction valve. The flow restriction valve includes at least one fluid flow check valve configured to allow the priming pump to prime the filter system.
Claims20
1-26. (canceled)
A flow restriction valve for a filter system comprising:
- a valve body, the valve body defining an opening keyed to a geometric projection of a filter cartridge, such that the geometric projection engages the opening and actuates the flow restriction valve, and
- at least one check valve configured to allow a priming pump to prime the filter system.
A method of installing a filter cartridge in a filter system comprising a flow restriction valve body and a priming system body, the method comprising:
- positioning the filter cartridge within a filter housing so the flow restriction valve body is housed within an interior volume of the filter cartridge, the flow restriction valve body comprising a flow restriction valve, a flow check valve, and a flow outlet positioned at the flow check valve, the flow outlet in fluid communication with a priming system inlet;
- engaging the flow restriction valve with a portion of the filter cartridge to actuate the flow restriction valve;
- and
- priming the filter system with the priming system body by allowing fluid to flow out of the flow restriction valve into the priming system body but not into the flow restriction valve through the flow check valve.
Dependencies are inferred from the claim text.