Pipe joints or couplings – Essential catch
Patent
1979-11-28
1981-09-15
Callaghan, Thomas F.
Pipe joints or couplings
Essential catch
285369, 285382, 285404, 403378, F16L 2108
Patent
active
042893399
ABSTRACT:
A fitting for connection to a metal plain end pipe includes a generally cylindrical sleeve section sized to receive and cradle a pipe end portion, an annular seal in the sleeve section for forming a fluid-tight connection between the pipe end portion and the fitting and a locking rod extensible into the sleeve section. The locking rod is received into a bore extending substantially tangentially through a wall of the sleeve section and communicating with a sleeve section interior surface over less than a cross-sectional circular periphery of the bore whereupon a segment of the wall of the bore forms an intersection with the interior surface along the length of the bore. The locking rod has a metal cutting tip for tangentially cutting a groove along the intersection in a pipe end portion received in the sleeve section. The locking rod is securely retained in the groove as a key for firmly locking the pipe into the fitting.
REFERENCES:
patent: 268686 (1882-12-01), Kaiser
patent: 333353 (1885-12-01), Smith
patent: 656765 (1900-08-01), Copeland
patent: 839947 (1907-01-01), McCluskey
patent: 971794 (1910-10-01), Scott
patent: 3282609 (1966-11-01), Van Der Ham
patent: 3822074 (1974-07-01), Welcker
Callaghan Thomas F.
Meyertech Incorporated
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