Pipes and tubular conduits – Repairing
Reexamination Certificate
2000-01-25
2001-03-27
Hook, James (Department: 3752)
Pipes and tubular conduits
Repairing
C138S109000, C138S110000, C029S516000, C285S015000
Reexamination Certificate
active
06206048
ABSTRACT:
1. FIELD OF THE INVENTION
This invention relates to a method for repairing a leaking hose fitting. More particularly, it refers to a method of connecting a hose ferrule to a bead lock fitting prior to crimping a hose to the fitting.
2. BACKGROUND OF THE INVENTION
Mobil air conditioning hose assembly repair systems are known as shown in
FIG. 1
, hereafter, as prior art. Such a system involves cutting the leaking hose from a bead lock fitting, placing a hose ferrule on a shaft of the bead lock fitting and thereafter placing a retaining ring in a groove formed by two annular flanges around the shaft of the bead lock fitting. This retaining ring is larger than the round opening in one end of the ferrule so the ferrule cannot be pulled off the shaft while an end of a hose is attached to the bead lock fitting and the ferrule is crimped onto the hose. While this prior art repair system accomplishes its intended purpose, it unnecessarily requires a retaining ring which can rust and cause damage to adjacent hoses. A system is needed for attaching a hose to a bead lock fitting without the need for a separate retaining ring.
SUMMARY OF THE INVENTION
My invention is a method of repairing leaks in air conditioning hoses without the need for a retaining ring on the bead lock fitting. The round opening in the ferrule is cut to make it partially oval in shape. After the old ferrule is cut free and the old hose removed, the oval opening on the new ferrule is placed over the groove formed between two annular flanges on the bead lock fitting. The new ferrule is turned about a ½ turn to wedge the narrower portion of the ferrule opening into the groove. Thereafter, the new hose is inserted and the ferrule is crimped to provide a complete repair of the air conditioning hose assembly.
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Hook James
Larson James E.
Larson & Larson P.A.
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