Articulated fuel container vent system and method

Details Articulated fuel container vent system and method Articulated fuel container vent system and method

2005-06-14

2005-06-14

Yu, Justine R. (Department: 3751)

Fluent material handling, with receiver or receiver coacting mea

Processes

C141S059000, C141S095000, C141S290000, C137S043000, C137S045000

Reexamination Certificate

active

06904943

ABSTRACT:
A vent system associated with a vapor outlet is coupled to a container (e.g., a fuel tank). The vent system can be used for onboard refueling vapor recovery (ORVR) for vehicles. The vent system includes a first elongated member (e.g., a vent tube), a rotating device, and a second elongated member (e.g., a breather tube) that is coupled between the rotating device and a buoyant device. The buoyant device interacts with materials (e.g., fuel) input into the fuel tank to actuate rotation of the rotating device. Once a predetermined amount of fuel has been input into the fuel tank, the buoyant device rotates the rotating device a predetermined amount, which stops venting of fuel vapor through the vent system. The fuel level continues to increase up the filler pipe until an automatic shut off mechanism of the device controlling fuel input stops fuel flow. Through the use of the buoyant device and the rotating device, regardless of the incline of the fuel tank with respect to a ground plane, the passage for vapors through the vent system will be closed when the fuel has reached the predetermined level. Thus, the vent system is used to compensate for inclination of the fuel tank.

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