Fill limit vent valve for fuel tank
AssigneeNifco Korea Inc.
InventorJeong Hoon Kim
Life of this patent
Estimating the term…
Abstract
It is disclosed a FLVV including: an upper cover provided in the fuel tank, and having an outlet duct; a casing coupled to the upper cover; the float, which is elastically provided inside the casing so as to be movable upward and downward, has a first valve seat provided on the upper surface of one side thereof so as to open and close a first outlet port by principle of a lever, and has a recessed surface formed at one side of the upper surface thereof; the plate elastically provided by a second spring at the recessed surface formed at the float, so as to open and close a second outlet port while moving upward and downward; and a lower cover closing the lower part of the casing and having the float elastically provided by a first spring.
Claims5
A fill limit vent valve (FLVV) for a fuel tank, the FLVV comprising:
- an upper cover having an outlet duct,
- a casing coupled to the upper cover,
- a float elastically provided inside the casing so as to be movable upward and downward by a first spring, wherein the float has a first valve seat provided on a first side of an upper surface of the float so as to open and close a first outlet port by a lever, and wherein the float has a recessed surface formed at a second side different from the first side of the upper surface of the float,
- a plate elastically provided at the recessed surface so as to be movable upward and downward by a second spring independent of a movement of the float by the first spring, wherein the plate has:
- (i) a second valve seat so as to open and close a second outlet port when the plate moves upward and downward and (ii) a vertical through-hole,
- a lower cover closing a lower part of the casing and having the float elastically provided by the first spring, and
- a guide protrusion provided and inserted into the vertical through-hole such that a first end of the guide protrusion is positioned at the recessed surface of the float and a second end of the guide protrusion protrudes upward above an upper surface of the plate.
Dependencies are inferred from the claim text.