Coupling device for duct

Details Coupling device for duct Coupling device for duct

1997-05-22

1999-02-02

Nicholson, Eric K.

Pipe joints or couplings

Flange

285424, 285414, 403401, F16L 2500, F16L 2300

Patent

active

058654780

ABSTRACT:
A coupling device for coupling two or more ducts together includes a number of frames each having four beams secured together for forming a square shape and for securing onto the ducts. The beams each includes a flange extended upward and each includes a panel formed on each of two ends and inclined relative to the beams. A number of fasteners may secure the panels together for allowing the beams to be secured to the duct. A number of blocks may be engaged between the panels for allowing the beams to be secured to the duct of greater size.

REFERENCES:
patent: 634275 (1899-10-01), Schenck
patent: 1672419 (1928-06-01), Lehman
patent: 2538138 (1951-01-01), Webster
patent: 2972396 (1961-02-01), Minick
patent: 3673674 (1972-07-01), Catulle
patent: 3923326 (1975-12-01), Mez
patent: 4283080 (1981-08-01), Nakajima
patent: 4976565 (1990-12-01), Stefan
patent: 5450879 (1995-09-01), Toben
patent: 5564758 (1996-10-01), Tiberio

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