Three-point, plug type sealing means for a hollow, cylindrical container, particularly a liquid-filtered smoking device

Claim 1

A sealing device for closing an open end of a hollow, tubular member comprising: three-point, plug type sealing means, mounted upon an open end of a hollow, tubular member, for engaging at least two primary surfaces of said tubular member and thereby closing said open end thereof; said sealing means comprising a first, inverted cup-shaped member having an inverted substantially U-shape in cross-section, and a second cup-shaped member having a portion substantially U-shaped in cross-section housing said first member therewithin; said first inverted member having a radially outwardly projecting annular flange means radially spacing the peripheral side wall of said first member from the peripheral side wall of said second member for defining an annular recess within which said open end of said tubular member is disposed for enhancing the sealing characteristics of said sealing means; and said tubular member being seated within said recess and in frictional contact with said peripheral side wall of said first member and said peripheral side wall of said second member, said annular recess having a width substantially equal to the thickness of the wall of said tubular member, said wall of said tubular member being beadless.