Duct-damper interface adaptor

Details Duct-damper interface adaptor Duct-damper interface adaptor

1978-06-15

1981-12-08

Arola, Dave W.

Pipe joints or couplings

Particular interface

Annular socket

285417, 285424, 160381, F16L 2500

Patent

active

043044271

ABSTRACT:
The present invention relates to slip joints for use with dampers, ducts, and mounting surfaces, as for example, fire dampers which are to be mounted through walls or other fire proof partitions and which are to have ducts mounted thereto. A novel duct-damper interface adaptor is disclosed which is constructed entirely from integral sheet material and which is slipped onto the inwardly depending flanges of a damper during the assembly of that damper. The damper adaptor unit is then ready to receive a complementally formed duct which is slidingly fitted thereon. This embodiment provides adaptors which are inexpensive, easy to manufacture, readily installable at the job site and provide superior advantage to the final damper-duct installation.

REFERENCES:
patent: 687556 (1901-11-01), Carter
patent: 2330769 (1943-09-01), Wichner
patent: 2498753 (1950-02-01), Deitsch
patent: 3327764 (1967-06-01), McCabe
patent: 3327766 (1967-06-01), Kurz
patent: 3677517 (1972-07-01), Root
patent: 3727663 (1973-04-01), McCabe
patent: 3800846 (1974-04-01), Kurz
patent: 3833989 (1974-09-01), McCabe
patent: 3871688 (1975-03-01), Molino

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