Fluid flow control valves
AssigneeCoplastix Limited
InventorBernard Francis Hope
Life of this patent
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Abstract
A tidal flap valve adapted to be located in sea walls, storage tank walls or banks of tidal rivers or other water courses in which the liquid level varies, the valve comprising a flap or closure member supported on a frame by a flexible hinge, the frame defining an opening and adapted for attachment to a substantially vertical wall about an opening therein, the hinge being protected against damage by being disposed in a substantially enclosed space defined by a portion of the frame and a portion of the closure member.
Claims12
A tidal flap valve comprising a frame defining a flow opening and adapted to be fixedly mounted over a registering opening in a substantially vertical wall, a closure member for said flow opening, a flexible hinge interconnecting an upper part of said closure member to said frame at an upper part of said flow opening, and a casing member projecting from said frame at said hinge, said frame and casing members and the upper portion of said closure member being cooperatively formed for defining a substantially enclosed space wherein said hinge is disposed for protection against damage and undesired access while permitting operational movement of said closure member about said hinge.
Dependencies are inferred from the claim text.