Vault ventilator system

Details Vault ventilator system Vault ventilator system

1993-03-15

1994-09-27

Joyce, Harold

Ventilation

Means combined with door

70445, 109 1V, F24F 700

Patent

active

053503384

ABSTRACT:
A system for introducing fresh air to a locked vault which is integral to the door of the vault. A fan provides motive force to the air which flows principally through passages in, or created with, existing components in the door. A food/water passage may be furnished by providing the door wheel spindle as a hollow, rather than a solid, tube.

REFERENCES:
patent: 1426424 (1922-08-01), Taylor
patent: 1539242 (1925-05-01), Bezdecheck
patent: 1590007 (1926-06-01), West
patent: 1666519 (1928-04-01), West
patent: 1666673 (1928-04-01), Williams
patent: 1786277 (1930-12-01), West
patent: 1791050 (1931-02-01), Williams
patent: 1800237 (1931-04-01), Williams
patent: 1805332 (1931-05-01), Goss
patent: 1810184 (1931-06-01), McClintock et al.
patent: 1861000 (1932-05-01), Ellithorpe
patent: 1873452 (1932-08-01), Meilink
patent: 4224861 (1980-09-01), Sands

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