Ships – Building – Canal and ferry boats
Patent
1979-08-01
1980-12-30
Yuen, Henry C.
Ships
Building
Canal and ferry boats
98 32, 114211, 137433, B63J 200
Patent
active
042416450
ABSTRACT:
A ventilator, in particular for an air shaft of a space to be ventilated on board a vessel, said ventilator comprising a box-shaped housing that is at least partly open downwards, and a hood-shaped part continuous with said housing and in open communication therewith, which hood-shaped part is open outwards on one side. In order to substantially decrease, or fully prevent the ingress of water in the air shaft through the ventilator, there are provided in the housing at least one horizontal longitudinal partition and at least two transverse partitions continuous therewith and extending in substantially vertical and opposite directions, said partitions dividing the housing in two parts, said longitudinal partition having an opening therein that can be closed by means of a float.
REFERENCES:
patent: 1790059 (1931-01-01), Nelson
patent: 2775979 (1957-01-01), Stout et al.
patent: 2935081 (1960-05-01), Kryzer
patent: 3311043 (1967-03-01), Atkinson
patent: 3741100 (1973-06-01), Beck
patent: 3869967 (1975-03-01), Lenz
patent: 3919927 (1975-11-01), Bernard, Jr.
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