Pipes and tubular conduits – Repairing – Patches
Patent
1990-06-12
1992-02-11
Coe, Philip R.
Pipes and tubular conduits
Repairing
Patches
138 97, 138 98, F16L 1912
Patent
active
050868098
ABSTRACT:
A pipe coupling includes a cylinder with an axial joint and a sealing device for sealing the fluid pathways between a leak location and the outer surface of the coupling. The sealing device includes arcuate gaskets extending along the inner surface of the cylinder and between axial gaskets which may be adhered to either side of the cylinder's axial joint. A clamping assembly closes the coupling so that an area of overlap is formed between the axial gaskets, thereby sealing the axial joint. The area of overlap is approximately equal to the thickness of the arcuate gaskets so that the sealing device exerts a uniform circumferential pressure upon the pipe without buckling or deforming the seal. The sealing gasket having arcuate gaskets extending between the axial gaskets may be provided separately. The first axial gasket may then be positoned so as to overlap the outer surface of the other axial gasket, and a coupling may be fitted over the gasket apparatus without deforming the seal provided thereby.
REFERENCES:
patent: 863887 (1907-08-01), Stuttle
patent: 1607943 (1926-11-01), Carson et al.
patent: 2913262 (1959-11-01), De Cenzo et al.
patent: 3153550 (1964-10-01), Hollett
patent: 4360227 (1982-11-01), Bridges
patent: 4391458 (1983-07-01), Blakeley
patent: 4583770 (1986-04-01), Kreku
patent: 4653782 (1987-03-01), Munday
patent: 4664428 (1987-05-01), Bridges
Depend-O-Lok Mechanical Coupling Systems, Catalog 202 Brico Industries, Inc., P.O. Box 80793, Atlanta, Ga. 30366.
Coe Philip R.
Till Terrence R.
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