Ballistically protective air passage

Details Ballistically protective air passage Ballistically protective air passage

1995-01-09

1997-05-13

Joyce, Harold

Ventilation

Vehicle

Having inlet airway

454147, 454902, B60H 130

Patent

active

056286821

ABSTRACT:
A low signature, low restriction, ballistically protective air intake assly for an exteriorly armored structure. The assembly is provided is comprised of one or more ducts having an entry end, an exit end and a spiralled duct portion between the ends. The entry ends communicate with an intake bell of armor material. The intake bell curves both away from the duct and out from duct openings at the entry ends. At the exit ends of the ducts are armor members faced toward the duct openings at the entry end. The armor members are positioned such that the spiralled duct portions lie between the armor members and the intake bell. Projectiles such as bullets travelling toward the entry end duct openings are either deflected away by the bell or caught by the armor member, whereby ballistic protection exists for elements in the armored structure interior to the assembly.

REFERENCES:
patent: 850160 (1907-04-01), Hodge et al.
patent: 1342152 (1920-06-01), Bennett
patent: 2158801 (1939-05-01), Petterson
patent: 4242951 (1981-01-01), Bemiss
patent: 4601510 (1986-07-01), Schoppel et al.
patent: 5113700 (1992-05-01), Coburn

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