Close coupled contractible vent connector

Details Close coupled contractible vent connector Close coupled contractible vent connector

1996-08-30

1997-07-08

Bennett, Henry A.

Ventilation

Having outlet airway

34235, 454359, F24F 700

Patent

active

056454821

ABSTRACT:
A telescopically extensible-contractible air duct connector comprising an elongated outer duct element having an open end, a closed end, and a lateral opening adjacent the closed end, an inner duct element telescopically interfitting within the outer duct element, having an open end within the outer duct element, a closed end located outside the outer duct element, a lateral opening adjacent the closed end, and a laterally projecting sleeve around the lateral opening, the outer duct element having an elongated slot extending from the open end and of a width slightly greater than that of the laterally projecting sleeve of the inner duct element to receive the sleeve upon telescopic contraction of the connector, and the inner duct element having an extended panel within the outer duct element, adjacent the slot, and of a width greater than the width of the slot to cover the slot when the connector is at least partially extended.

REFERENCES:
patent: 31652 (1861-03-01), Bell
patent: D218825 (1970-09-01), Blummer
patent: 258311 (1882-05-01), Neilson
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patent: 5121948 (1992-06-01), Anderson et al.
patent: 5257468 (1993-11-01), Lebrun

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