Device for opening flanged joints

Details Device for opening flanged joints Device for opening flanged joints

1981-04-21

1983-03-01

Crosby, Gene

Metal deforming

By tool-couple embodying nonplanar tool-face

29268, 7245316, B21D 706

Patent

active

043751610

ABSTRACT:
Disclosed is a device for opening a flanged joint of the type wherein one or more flange extensions on one flange part of the joint are bent around into engagement with the other flange part of the joint. A first leg member including a first generally tapered end portion is adapted to enter behind the bent-around flange extension of the flanged joint and engage the end of the bent-around flange extension. A second leg member includes a first end portion cooperating with the first end of the first leg member and having a generally flat contact surface on its side facing the first end portion of the first leg member, with the flat contact surface being adapted to engage and support the outer circumferential surface of the flanged joint. Preferably, the device includes a fluid cylinder attached to the second ends of the first and second leg members for selectively producing relative rotation of the leg members with respect to each other about a hinge connection.

REFERENCES:
patent: 2248166 (1941-07-01), Eilers
patent: 2267660 (1941-12-01), McPhail
patent: 3366085 (1968-01-01), Young
patent: 3822468 (1974-07-01), Mueller
patent: 4050464 (1977-09-01), Hall
patent: 4226109 (1980-10-01), Nilsson
patent: 4281531 (1981-08-01), Ehmann
Radiator Reporter and Pricing Guide, vol. 8, No. 9, pp. 80-97-80-101, Sep., 1980.

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