Valves and valve actuation – With correlated flow path – Tank
Patent
1998-09-04
2000-02-01
Douglas, Steven O.
Valves and valve actuation
With correlated flow path
Tank
141 46, 141198, 220 862, B65B 104
Patent
active
060193484
ABSTRACT:
A quick-connect coupling assembly, and method of making same, for connecting a fuel fill pipe to a fuel tank made of a polyethylene based material. A mounting bracket subassembly has a base molded of such tank-type material that is plastic welded to the tank fill opening margin. A second more stable plastic material also is used in the bracket not only to anchor the connection between the fuel tank and the fill pipe and to provide the necessary resistance to pull force against disconnection, but also to contain the polyethylene bracket material in such a way as to minimize geometric (dimensional) changes due to fuel absorption and creep in the critical region of the connection that contains the O-ring seals or like sealing elements. Use of overmold fabrication and assembly procedures is preferably employed in the connector in such a way that the sealing package seals directly to the fuel tank material (such as HDPE) and still leaves a more robust material (such as acetate) for the interface between the mechanically locking mechanisms that form the actual connection. Preferably, an integral, tubular extension of one of two selected components of the quick connect construction provides an outlet spout protruding into the tank interior and housing a back-check valve operable to prevent fuel back flow and leakage into the fill pipe in an efficient, economical and reliable manner. The coupling O-ring seals are preferably disposed internal or near internal to the tank wall for purposes of crash protection, extending the service life and improving the sealing characteristics of the fuel tank to fuel pipe connection.
REFERENCES:
patent: 4703867 (1987-11-01), Schoenhard
patent: 5568828 (1996-10-01), Harris
patent: 5829619 (1998-11-01), Gupta et al.
Dana Corporation
Douglas Steven O.
LandOfFree
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