Connecting device

Details Connecting device Connecting device

1979-11-08

1981-10-13

Callaghan, Thomas F.

Pipe joints or couplings

End to side or plate

285424, F16L 4100

Patent

active

042944767

ABSTRACT:
A device is disclosed relating to sheet metal duct connections, particularly where sections of metal ducts must be joined during construction of metal duct work. A connecting device cuttable to any desired length without substantial waste can be inserted on a segment of duct and joined to a wall or second duct surface having an opening cut to the size of the first duct to which is attached the connecting device. By manual manipulation, the connecting device can then anchor the first duct to the wall or second duct opening.

REFERENCES:
patent: 2963783 (1960-12-01), Field
patent: 3185506 (1965-05-01), Szlashta
patent: 3754782 (1973-08-01), De Lord
patent: 3836181 (1974-09-01), Kelver
patent: 4009894 (1977-03-01), Marquette et al.
patent: 4046409 (1977-09-01), Virgin

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