Pipe joints or couplings – Movable jaw – Wedge bushing
Patent
1996-07-26
1998-07-07
Ricci, John A.
Pipe joints or couplings
Movable jaw
Wedge bushing
285322, F16L 3702
Patent
active
057757429
ABSTRACT:
The disclosure relates to a tube coupling comprising a coupling body having a throughway open at one end to receive a tube, the diameter of the throughway increasing towards said open end at a first step to form a first enlarged diameter portion to receive a tube and at a second step to form a second, further enlarged diameter portion to receive a tube locking device to hold a tube in the coupling body. A thin wall sleeve has one end engageable in the throughway and the other end engageable in a tube to be located in the coupling body so that, in use, the sleeve extends from the tube passed the first step into the throughway. The end part of the tube in the throughway is engaged by a seal located in the throughway to prevent ingress of fluid between the sleeve and throughway.
REFERENCES:
patent: 1428949 (1922-09-01), Eastman
patent: 4188051 (1980-02-01), Burge
patent: 4194769 (1980-03-01), Bram
patent: 5230539 (1993-07-01), Olson
patent: 5580100 (1996-12-01), Umezawa et al.
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