Pipe joints or couplings – For plural component line – Metal and elastomeric layers
Patent
1995-06-05
1996-10-15
Nicholson, Eric K.
Pipe joints or couplings
For plural component line
Metal and elastomeric layers
411178, 277178, 285915, 285910, 285150, 16 2, F16L 4100
Patent
active
055647561
ABSTRACT:
A duct coupling pad for joining flexible ducts includes an outer section surrounding a central opening. An adhesive coating is applied to one surface of the coupling pad for adhering the pad to a first one of the ducts to be joined. An opening is formed in the first duct within the area of the central opening of the coupling pad. Securing tabs integrally formed with the outer section of the coupling pad are folded inwardly into the opening in the first duct and adhered to the inner surface thereof. The coupling pad binds the edge of the opening in the first duct to prevent splitting and tearing of the linings. A collar is inserted into the central opening of the coupling pad and the second duct is connected to the collar.
REFERENCES:
patent: 2501465 (1950-03-01), Caramanoff
patent: 2684400 (1954-07-01), Redmond
patent: 3188121 (1965-06-01), Cude et al.
patent: 3328854 (1967-07-01), Tombari
patent: 3788655 (1974-01-01), Hathaway
patent: 4620729 (1986-11-01), Kauffman
patent: 4699212 (1987-10-01), Andersson
patent: 5002327 (1991-03-01), Burkit
patent: 5314212 (1994-05-01), Sanders
patent: 5393106 (1995-02-01), Schroeder
patent: 5411299 (1995-05-01), Wagner
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