US 2010/0319787 A1Published application

Fuel cut-off valve

AssigneePiolax, Inc.

InventorNobuhiro Hirata

Life of this patent

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Abstract

Provided is a fuel cut-off valve capable of preventing liquid fuel from flowing into a valve inside from an evaporation line side, and inhibiting the liquid fuel from flowing into a canister side. The fuel cut-off valve includes: a housing main body including a lower space and an upper space partitioned through a partition wall; a float valve coming into contact with/moving away from a first opening; a lid sealing the upper space; an evaporation line connection pipe communicated to the upper space; a canister connection pipe similarly communicated to the upper space; and a second opening formed in a portion coupled to the evaporation line connection pipe and a third opening formed in a portion coupled to the canister connection pipe, which are surrounded by walls formed in the housing main body and/or the lid, and communicated to each other only through the upper space beyond the walls.

Claims4

Dependent claims

A fuel cut-off valve, comprising:

a housing main body including a lower space and an upper space that are partitioned through a partition wall, the partition wall being provided with a first opening;
a float valve that is arranged in the lower space to be movable upward and downward, and comes into contact with the first opening while moving away from the first opening after the contact;
a lid that is placed to cover an upper portion of the housing main body, and seals the upper space;
an evaporation line connection pipe that is coupled to one of the housing main body and the lid, and is communicated to the upper space;
a canister connection pipe that is coupled to one of the housing main body and the lid, and is communicated to the upper space;
and
a second opening that is provided in a portion coupled to the evaporation line connection pipe and a third opening that is provided in a portion coupled to the canister connection pipe, the second opening and the third opening being surrounded by walls formed in at least one of the housing main body and the lid and being communicated to each other only through the upper space beyond the walls.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/816,542Filed 16 Jun 2010
Priority: JP 2009-14414217 Jun 2009
Published: 23 Dec 2010
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

F02M 37/0023
Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor: valves in the fuel supply and return system
Y10T 137/0874
Control by change of position or inertia of system: vent opening or closing on tipping container
Y10T 137/2965
Gas pressure controlled by amount of liquid in trap: float responsive
Y10T 137/3099
Fluid sensing valve: float responsive