Ventilation system

Details Ventilation system Ventilation system

1991-03-04

1992-12-01

Joyce, Harold

Ventilation

Vehicle

Having outlet airway

1375121, 454904, B60H 126

Patent

active

051675749

ABSTRACT:
A ventilation system for ventilating the inside of a compartment such as the compartment of an automobile or the room of a building. The ventilation system prevents the contaminated outside air from flowing back into the inside of the compartment from an inside air outlet by magnetically attracting a mouth frame, which is composed of the inside air outlet and a peripheral edge, and a one-way valve for opening the inside air outlet only at the time of releasing the inside air of the compartment to the outside.

REFERENCES:
patent: 2739521 (1956-03-01), Spear
patent: 2849941 (1958-09-01), Negoro
patent: 3891000 (1975-06-01), Melnick
patent: 4512934 (1985-04-01), Bucher

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