Fluid handling – Systems – System with plural openings – one a gas vent or access opening
Patent
1990-12-03
1991-10-01
Rivell, John
Fluid handling
Systems
System with plural openings, one a gas vent or access opening
137577, 137590, 141206, 141288, F16R 2404
Patent
active
050524372
ABSTRACT:
A vent tube assembly (10) for use with a supply of fuel to a fuel tank (12) mounted in a vehicle (14), which enables an operator to fill the tank (12) with a reasonably predictable quantity of fuel to its normal capacity. The vent tube assembly (10) comprises an inner vent tube (24) having at least one inner venting port (26) defined therein. The inner vent tube (24) extends downwardly through the tank (12) for relieving vapor pressure in the tank as the volume of fuel contained therein increases during replenishment from the supply until the fuel in the tank rises to a shut-off level (30). An outer vent tube (32) lies in telescoping relationship with the inner vent tube (24) and has a base (34) which is received by the lower portion of the fuel tank. The outer vent tube (32) is provided with at least one outer venting port (36). A spring urges the outer vent tube (32) toward an extended position so that the outer vent tube (32) is loaded against the lower portion of the tank (12). The outer vent tube (32) is adapted to move in cooperation with the lower portion of the tank (12). The vent tube assembly (10) provides a fuel shut-off level (30) which is determined at a fixed distance above the lower portion of the fuel tank, regardless of dimensional changes therein and vehicle attitude.
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Drouillard Jerome R.
Ford Motor Company
Rivell John
Sadler Clifford L.
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