Vapor passage fuel blockage removal

Claim 2

In a hose assembly for dispensing fuel to a nozzle which is adapted to be inserted into the fill pipe of a vehicle fuel tank, said hose assembly comprising an inner tube means having opposed outer ends and defining a fuel conduit and a tubular outer sleeve means having opposed outer ends which defines with said inner tube means an annular passage for recovering fuel vapors from said fuel tank, the improvement wherein said inner tube means comprises two inner tube sections having flexible portions and having adjacent ends, said inner tube sections respectively leading from said adjacent ends thereof toward said opposed outer ends of said inner tube means, said inner tube means also comprising a venturi means disposed in serial connection with said inner tube sections within said outer sleeve means and including connecting means at each end thereof respectively connected to said adjacent ends of said inner tube sections, said venturi means having inlet means which communicates with said annular vapor passage so that liquid fuel collected in said annular passage is adapted to be drawn through said inlet means due to suction adapted to be produced in said venturi means upon the flow of fuel therethrough.

Claim 3

A hose assembly as set forth in claim 1 wherein said hose assembly is adapted to form a looped low portion when said hose assembly is interconnected to a dispenser pump and is dispensing fuel into a fuel tank and wherein said venturi means is located in said inner tube means so as to be disposed in said looped low portion when said hose assembly is dispensing said fuel.

Claim 4

In a liquid dispensing hose assembly for distributing liquid fuel from a pump to a valved nozzle which is adapted to be inserted into the fill pipe of a vehicle fuel tank, said hose assembly comprising an inner tube means having opposed outer ends and defining a fuel conduit and a tubular outer sleeve means having opposed outer ends which defines with said inner tube means an annular passage for recovering fuel vapors from said fuel tank, the improvement wherein said inner tube means comprises two inner tube sections having flexible portions and having adjacent ends, said inner tube sections respectively leading from said adjacent ends thereof toward said opposed outer ends of said inner tube means, said inner tube means also comprising a venturi section disposed in serial connection with said inner tube sections within said outer sleeve means and comprising an elongated block having connecting means at each end thereof respectively connected to said adjacent ends of said inner tube sections and defining a venturi forming part of said fuel conduit, said venturi section having a plurality of inlet means which communicate between said venturi forming part and said annular vapor passage and which are so arranged that at least one inlet means is always located below the centerline of said venturi section when the centerline of said venturi section is disposed substantially horizontally in said liquid dispensing hose assembly, regardless of the rotational position of said hose assembly so that liquid fuel collected in said annular passage is adapted to be drawn through said inlet means due to suction adapted to be produced in said venturi forming part upon the flow of fuel therethrough.

Claim 5

In a liquid dispensing hose assembly for distributing liquid fuel from a pump to a valved nozzle which is adapted to be inserted into the fill pipe of a vehicle fuel tank, said hose assembly comprising an inner tube means having opposed outer ends and defining a fuel conduit and a tubular outer sleeve means having opposed outer ends which defines with said inner tube means an annular passage for recovering fuel vapors from said fuel tank, the improvement wherein said inner tube means comprises two inner tube sections having flexible portions and having adjacent ends, said inner tube sections respectively leading from said adjacent ends thereof toward said opposed outer ends of said inner tube means, said inner tube means also comprising a venturi section disposed in serial connection with said inner tube sections within said outer sleeve means and comprising an elongated block having connecting means at each end thereof respectively connected to said adjacent ends of said inner tube sections and defining a venturi forming part of said fuel conduit, said venturi section having a plurality of inlet means which communicate between said venturi forming part and said annular vapor passage and which are so arranged that at least one inlet means is always located below the centerline of said venturi section when the centerline of said venturi section is disposed substantially horizontally in said liquid dispensing hose assembly, regardless of the rotational position of said hose assembly so that liquid fuel collected in said annular passage is adapted to be drawn through said inlet means due to suction adapted to be produced in said venturi forming part upon the flow of fuel therethrough.

Claim 6

A hose assembly as set forth in claim 3 wherein said hose assembly is adapted to form a looped low portion when said hose assembly is interconnected to a dispenser pump and is dispensing fuel into a fuel tank and wherein said venturi section is located in said inner tube means so as to be disposed in said looped low portion when said hose assembly is dispensing said fuel.