Air vent
OwnerIan A. McIntoshinventor
Life of this patent
Estimating the term…
Abstract
A deck ventilator suitable for small vessels is formed as a low dome 12. Outside air may enter it through window 14 and then circulate around member 30, through orifice 22 and down duct 7 which pierces deck 4. Member 30 usually serves merely as a shield against spray, however if a surge of water enters compartment 18 the orifice 22 is closed by movement of member 30 which is slidably hinged to U-shaped rods 23. This closing movement results from the combination of the impact of the water on member 30 and the member's inherent buoyancy.
Claims9
A deck ventilator comprising a squat cap having a side wall formed with a window next to the deck;
- a common-wall formed with an orifice and dividing the cap interior into two chambers one of which communicates with the window;
- a ventilator duct in the other chamber and having its lower end portion projecting downwardly through the deck;
- hinge means in said one chamber;
- a closure member turnable about the hinge means from a first position at which the orifice is unobstructed and to which the member is biased, to a second position at which the member closes the orifice and a buoyant element effectively integral with the member and which biases it to the second position when the closure member is impacted upon by a horizontally directed surge of water running along the deck and entering said one chamber by way of the sideways facing window.
A deck ventilator comprising a squat domed cap, a side-wall to said cap defining a sideways facing window disposed next to the deck;
- a flat plate formed with an orifice and providing a common-wall dividing the cap interior into two chambers one of which communicates with the window;
- a duct extending downwardly through the deck to a compartment to be ventilated;
- an upper-end portion of the duct projecting into the other chamber;
- a closure member in said one chamber and for closing said orifice a sliding hinge connection formed between the upper portion of the closure member and the underside of the common-wall at a position between the orifice and a margin of the cap above the window, the hinge connection defining a horizontal hinge axis for the closure which slopes down from said axis away from the window and which has a width sufficient to screen the orifice from the window;
- buoyant means on the underside of said closure to urge it upwardly to close the orifice if impacted upon by a horizontally directed surge of water entering the cap by way of said window, and weep holes for draining water out of said other chamber.
Dependencies are inferred from the claim text.