Conduit attachment

Details Conduit attachment Conduit attachment

1993-05-10

1994-08-30

Cuda, Irene

Metal working

Method of mechanical manufacture

Heat exchanger or boiler making

2989013, 2989014, B23P 1500

Patent

active

053415663

ABSTRACT:
A method of attaching and sealing a straight walled tubular fitting to a block or valve body. The end of the tubing is closely fitted in a counterbore which has an undercut groove with a recessed elastomeric seal ring with the inner edges of the groove chamfered. A tubular insert having a thickened wall portion at one end is received in the tube so the thickened wall is coincident with the seal ring. A tapered punch is driven in the thickened end of the insert, causing the tubing wall to bulge locally and expand into the chamfered groove to secure the tube in the block and seal against the seal ring.

REFERENCES:
patent: 560919 (1896-05-01), O'Toole
patent: 2120067 (1938-06-01), Gray et al.
patent: 2417350 (1947-03-01), Conroy
patent: 3064707 (1962-11-01), Walts
patent: 3785029 (1974-01-01), McClellan et al.
patent: 4651821 (1987-03-01), Moranne
patent: 4712809 (1987-12-01), Legris
patent: 5022151 (1991-06-01), Sorenson
patent: 5101561 (1992-04-01), Fuhrmann et al.
patent: 5131145 (1992-07-01), Badoureaux
patent: 5226235 (1993-07-01), Lesage

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