Siphonable check valve and method of making same

Details Siphonable check valve and method of making same Siphonable check valve and method of making same

2005-11-01

2005-11-01

Rivell, John (Department: 3753)

Fluid handling

Systems

System with plural openings, one a gas vent or access opening

C137S151000, C137S538000, C137S592000, C251S356000, C141S301000

Reexamination Certificate

active

06959727

ABSTRACT:
A check valve for connection in a fuel tank filler tube. The valve has a tubular body with a plurality of radially inwardly extending vanes or ribs in the inlet end about a portion of the circumference. The ribs are tapered in the flow direction to deflect the end of a siphoning hose to an offset opening. A valve seat and poppet with a tapered surface are disposed downstream of the ribs, clearance apertures are formed in the side of the tubular body downstream of the valve seat. The tapered surface of the poppet, upon being opened by insertion of the end of a siphoning hose deflects the hose outwardly through the clearance apertures to facilitate further insertion into the tank. The poppet is biased normally closed by a spring.

REFERENCES:
patent: 2782801 (1957-02-01), Ludwig
patent: 6056029 (2000-05-01), Devall et al.
patent: 6234195 (2001-05-01), Kippe et al.
patent: 6648016 (2003-11-01), Farrenkopf et al.
patent: 2003/0116202 (2003-06-01), Krishnamoorthy et al.
patent: 2003/0150498 (2003-08-01), Williams

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