Pipe joints or couplings – Packed – Flanged pipe
Patent
1979-04-20
1981-09-08
Arola, Dave W.
Pipe joints or couplings
Packed
Flanged pipe
29225665, 292257, 285 39, 285421, F16L 1700
Patent
active
042881161
ABSTRACT:
A method and apparatus for aligning and fastening open ended tubular members, such as pipes, tanks, and other cylindrically shaped fluid enclosures, which have radially outwardly protruding flanges extending around the circumference of the open ends. The flanges have flat mating faces and tapered back sides defining conical surfaces which converge radially outwardly when the flanges of two tubular members are abutted. The fastening device comprises a ring, a plurality of rotatable and radially movable clamping spools retained on the ring, and a like plurality of bolts on the ring for moving the clamping spools radially inward. The rotatable clamping spools have a cylindrical shank and rim segments at the shank ends which extend around only a portion of the shank circumference. The rim segments, which define opposing clamping faces, are dimensioned so as to accommodate the shape of the flange back sides and to apply axial clamping forces to the mated flanges when the spools are forced radially inward by the bolts. Any three generally equally spaced apart clamping spools may be rotated so their respective rim segments point radially outward and may then be forced radially inward so that the shanks of the three spools initially axially align the abutted flanges prior to clamping.
REFERENCES:
patent: 2095037 (1937-10-01), Reintjes
patent: 2441754 (1948-05-01), Cobi
patent: 2996318 (1961-08-01), Gravert
patent: 3627358 (1971-12-01), Polston
Arola Dave W.
Retech, Inc.
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