Ventilator extension unit

Details Ventilator extension unit Ventilator extension unit

1982-07-29

1984-11-13

Joyce, Harold

Joints and connections

Interfitted members with external bridging piece

403363, F24F 1306

Patent

active

044818718

ABSTRACT:
A portable air duct extension unit especially for use in a building heated or cooled by air and having a hot or cold air outlet. The unit comprises telescoping mounting and extension sections with magnets for mounting the unit. The sections may be formed by extrusion and are designed to maximize the flow of air without turbulence.

REFERENCES:
patent: 1094508 (1914-04-01), Wilford
patent: 1400658 (1921-12-01), Brown
patent: 4020753 (1977-05-01), Efstratis

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