Fuel filter device
AssigneeNifco Inc.
InventorsHiroji Sato, Yasushi Ueki, Shigeru Takahashi, Takaya Ogawa
Life of this patent
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Abstract
A fuel filter device includes a bag-shaped filter member and is adapted to be attached to communicate an inner space of the filter member with a fuel suction opening in a fuel tank. The filter member is configured in a multilayer structure. At least one layer of the filter member is configured to serve as an inhibition layer having a structure to prevent water in a fuel tank form coming into the inner space of the filter member by a pressure applied to the filter member when the water is frozen.
Claims21
A fuel filter device, which includes a bag-shaped filter member and is adapted to be attached to communicate an inner space of the filter member with a fuel suction opening in a fuel tank, comprising:
- the filter member configured in a single layer structure or a multilayer structure;
- each the entire filter member configured in such a single layer structure and at least one layer of the filter member configured in such a multilayer structure being configured to serve as an inhibition layer having a structure to prevent water in a fuel tank form coming into the inner space of the filter member by a pressure applied to the filter member when the water is frozen.
A fuel filter device, which includes a bag-shaped filter member and is adapted to be attached to communicate an inner space of the filter member with a fuel suction opening in a fuel tank, comprising:
- the filter member configured in a single layer structure or a multilayer structure;
- each of the entire filter member configured in such a single layer structure and at least one layer of the filter member configured in such a multilayer structure being configured to serve as an inhibition layer having an average opening size of 20 μm or below.
A fuel filter device, which includes a bag-shaped filter member and is adapted to be attached to communicate an inner space of the filter member with a fuel suction opening in a fuel tank, comprising:
- the filter member configured in a single layer structure or a multilayer structure;
- each of the entire filter member configured in such a single layer structure and at least one layer of the filter member configured in such a multilayer structure being configured to serve as an inhibition layer configured to prevent water from passing therethrough under a water pressure of less than 4.5 kPa.
Dependencies are inferred from the claim text.