Air duct starting collar with quick mounting means

Details Air duct starting collar with quick mounting means Air duct starting collar with quick mounting means

1996-12-31

1998-04-21

Arola, Dave W.

Pipe joints or couplings

With assembly means or feature

With holding means functioning only during transportation...

285205, F16L 5500

Patent

active

057410305

ABSTRACT:
An air duct starting collar having integral clips used for installation in a planar surface of an air duct. The flange of the device having a design permitting variance in hole size, and roughness of the hole's edge.

REFERENCES:
patent: 524051 (1894-08-01), Walker
patent: 526285 (1894-09-01), Ayling
patent: 3954289 (1976-05-01), Martin, Sr.
patent: 4249758 (1981-02-01), Harris
patent: 4620729 (1986-11-01), Kauffman
patent: 4627647 (1986-12-01), Hauff

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