Patent ID: 6837265
Filing Date: 2005-01-04
Classification: A62B,B60H,F16K,Y10T

Abstract:
1. A one-way valve comprising: a plate having a vent opening of a first size and shape and the plate having a first curvature; a flexible vane having a second curvature distinct from the first curvature, the vane being fixed to the plate in a manner facilitating the movement of the vane between an open position and a closed position, the vane being in a bent condition in the closed position, the vane conforming to the first curvature of the plate over the vent opening and covering the vent opening in the closed position, the vane being elastic throughout a range of deflection between the closed position and the open position; at least one of the first curvature and the second curvature having an axis of curvature about which the one curvature is formed; and a hinge disposed on a side of the vane fixing the vane to the plate and enabling pivoting between the open position and the closed position about a hinge axis normal to the axis of curvature.