Pipe joints or couplings – With means blocking release of holding means
Patent
1999-03-25
2000-05-02
Nicholoson, Eric K.
Pipe joints or couplings
With means blocking release of holding means
285 93, 285322, 285323, 285314, F16L 1702
Patent
active
060563265
ABSTRACT:
A tube coupling is provided with a coupling body having a throughway opened at one end to receive an end portion of a tube. The coupling body has an internal cam surface tapering towards its open end in which a collet is located for locking the tube in the coupling body by engagement with the tapered cam surface, and also has stop means to limit entry of the collet into the throughway. The coupling body includes a main body, the main body including the throughway to receive the end portion of the tube and including the stop means to limit insertion of the collet. The coupling body also includes a cap in screw-threaded engagement with the main body, the cap including the open end to the throughway and the tapered cam surface. First indexing means on the cap and second indexing means on the main body are moveable relative to one another and engage one another in first and second positions to provide resistance to movement through the first and second positions. In the first position, a tube may be inserted and, by depressing the collet into the coupling body, the tube may be released from the coupling body. In the second position, the collet is engaged with the stop means to prevent the collet from being depressed into the coupling body to release the tube.
REFERENCES:
patent: 3653689 (1972-04-01), Sapy et al.
patent: 3909046 (1975-09-01), Legris
patent: 4005883 (1977-02-01), Guest
patent: 4169572 (1979-10-01), Simon
patent: 4606783 (1986-08-01), Guest
patent: 4613158 (1986-09-01), Ekman
patent: 4637636 (1987-01-01), Guest
patent: 5580105 (1996-12-01), Miller, Jr. et al.
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