Insulated fittings for flexible air ducts

Details Insulated fittings for flexible air ducts Insulated fittings for flexible air ducts

1992-02-19

1993-08-31

Nicholson, Eric K.

Pipe joints or couplings

With casing, lining or protector

Insulated

285156, 285330, 285 64, 285150, F16L 3900, F16L 4100, F16L 5900

Patent

active

052402924

ABSTRACT:
An insulated fitting for a flexible air duct wherein the fitting has a collar for dressing the end of the flexible air duct coupled to the fitting. The fitting can be a tee, wherein the collar is connected to a retaining ring rotatably mounted to the main conduit of the tee so that the angular position of the tee can be varied depending upon the desired direction of the branch conduit of the tee. The retaining ring has a base portion for securing the T-fitting to a supporting surface The fitting can also be a wye and a reducer.

REFERENCES:
patent: 2937662 (1960-05-01), Green
patent: 3453716 (1969-07-01), Cook
patent: 3645564 (1972-02-01), Corriston
patent: 3857590 (1974-12-01), Meeker
patent: 4416474 (1983-11-01), Miller et al.
patent: 4462618 (1984-07-01), Stone
patent: 4475749 (1984-10-01), Pforr et al.
patent: 4569110 (1986-02-01), Goettel
patent: 4890864 (1990-01-01), Anderson et al.
patent: 5133579 (1992-07-01), Anderson et al.

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