To provide a check valve assembly used for a filler tube of a fuel tank which facilitates the insertion of a siphon hose into a fuel tank, and a method for forming the check valve.
The check valve assembly 10 having a substantially cylindrical valve body 12 is provided with a plurality of vanes or ribs 20 which extend inward in the radial direction, at the circumferential position of the valve body 12 inlet. The ribs 20 are tapered in the flowing direction, and the direction of the siphon hose end to be inserted is made to face an offset opening part. A valve sheet 24 and a poppet 26 having a tapered surface 36 are arranged below the ribs 20. Opening parts 18 are formed below the valve sheet 24, at the side of the valve main body 12. When the tapered surface 36 of the poppet 26 is opened by the insertion of the siphon hose end, the direction of the hose end is changed so as to extend through the opening parts 18 for facilitating further insertion into the fuel tank. The poppet 26 is normally closed by being energized by a spring 28.
VERZYL STEVEN A
BENJEY ROBERT P
Next Patent: GEAR TRANSMISSION CONTROL APPARATUS