Air duct

Details Air duct Air duct

1993-01-21

1994-12-13

Joyce, Harold

Ventilation

Having inlet airway

Including automatic control means

454271, F24F 1102

Patent

active

053725441

ABSTRACT:
An automatic ventilator closure which operates on the basis of a pressure differential condition within the conduit is provided with an air flow detector to ensure that the control system for the closure does not cycle. The pressure sensor and air flow detector are both in the form of vanes that are integrally connected to each other.

REFERENCES:
patent: 4394958 (1983-07-01), Whitney et al.
patent: 4557418 (1985-12-01), Leemhuis
patent: 5081913 (1992-01-01), Gervais

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