Fluid filter with bypass valve failure protection
OwnerTimothy Hendersoninventor
Life of this patent
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Abstract
A valve failure protection device is provided for use in a fluid filter element of the type that includes a filter media that defines an inner passage having first and second ends and a bypass assembly positioned in the second flow path for selectively permitting flow through the first end and the inner passage to the second end. The valve failure protection device includes a perforated safety barrier adapted to be positioned in the inner passage downstream of the bypass assembly. The safety barrier is dimensioned to prevent the bypass assembly or pieces thereof from passing therethrough while permitting the flow of fluid along the inner passage to the second end.
Claims17
A valve failure protection device for use in a fluid filter element of the type including a filter media that defines an inner passage having first and second ends and a bypass assembly positioned in the second flow path for selectively permitting flow through the first end and the inner passage to the second end, and comprising a perforated safety barrier adapted to be positioned in the inner passage downstream of the bypass assembly, wherein the safety barrier is dimensioned to prevent the bypass assembly or pieces thereof from passing therethrough while permitting the flow of fluid along the inner passage to the second end.
A valve failure protection device according to claim 7 wherein the safety barrier and the cap are integrally formed.
A filter element comprising:
- a filter media that defines an inner passage having first and second ends;
- a first flow path defined through the filter media and the inner passage to the second end;
- a second flow path that bypasses the filter media defined through the first end and the inner passage to the second end;
- a bypass assembly positioned in the second flow path for diverting flow from the first flow path through the second flow path;
- and
- a perforated safety barrier positioned in the second flow path downstream of the bypass assembly wherein the safety barrier is dimensioned to prevent the bypass assembly or pieces thereof from passing therethrough while permitting the flow of fluid along the second flow path to the second end.
A filter element according to claim 9, wherein the safety barrier is cup-shaped.
A filter element according to claim 10, wherein the cup-shaped safety barrier has tapered sides that have openings formed therethrough.
A filter element according to claim 12 wherein the safety barrier is integrally formed with the tube.
A filter element according to claim 15 wherein the safety barrier and the cap are integrally formed.
A filter element according to claim 17 wherein the safety barrier and the cap are integrally formed.
Dependencies are inferred from the claim text.