Patent ID: 6530576
Filing Date: 2003-03-11
Classification: F16K,F17C,Y10T

Abstract:
A device for at least partially closing an opening, the opening having an edge having a first thickness, the device having a perimetral portion extending at least part of the way around an outer perimeter of the device, but less than all of the way around the perimeter, the perimetral portion providing a perimetrally outwardly opening groove, the groove having a first width measured perpendicular to a direction around the perimetral portion, the first width being substantially equal to the first thickness to receive the edge and retain the device in the opening, and a web region extending inwardly from the perimetral portion in a direction opposite the direction in which the groove opens, the web region being slitted to permit flexing of adjacent regions of the web region to facilitate the passage of a conduit through the web region.