Pipe joints or couplings – Elbow
Patent
1980-09-25
1983-11-01
Callaghan, Thomas F.
Pipe joints or couplings
Elbow
285314, F16L 3718
Patent
active
044126948
ABSTRACT:
Clamping devices particularly useful as pipe couplings comprise a pair of clamping segments interposed between the housing end face and an apertured cap rotationally mounted on the housing, the cap including cam surfaces effective, upon rotation of the cap, to displace the clamping segments radially inwardly to grip the pipe, or radially outwardly to release the pipe. In one embodiment, the clamping segments are of a circle having a radius of curvature larger than the pipe to be clamped. In other embodiments, the clamping segments are formed with inclined walls to define triangular spaces at their adjacent ends, which triangular spaces receive rollable elements adapted to be displaced inwardly, when the clamping segments are displaced outwardly to their released positions, to engage the pipe and thereby to assure its release from the clamping segments.
REFERENCES:
patent: 592899 (1897-11-01), Wilson
patent: 1740574 (1929-12-01), Christensen
patent: 1788366 (1931-01-01), Anderson
patent: 2001244 (1935-05-01), Ezell
patent: 2463179 (1949-03-01), Iftiger, Sr.
patent: 2478052 (1949-08-01), Palm
patent: 3444753 (1969-05-01), Runkle
patent: 3482889 (1969-12-01), Cochran
Barish Benjamin J.
Callaghan Thomas F.
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