Patent ID: 7946440

Claim:
An elongated two-piece expandable sealing plug adapted to sealingly close a marginal end portion of a hole provided in a body, comprising: a cup-shaped member having an annular open upper end, having an outer surface that is adapted to face toward a wall on said body surrounding said hole, having an inner surface that diverges radially outwardly in a direction toward said member upper end, and having a bottom surface; and a head having an outer rim portion mounted on the upper marginal end portion of said member for rotation therewith, and having a central portion arranged within, and secured to, said rim portion; wherein said member is adapted to be inserted into a marginal end portion of said body hole; and wherein said central portion is adapted to be forcibly pushed toward said cup-shaped member bottom surface to (a) cause said central portion to physically separate from said rim portion, and (b) cause such separated central portion to movably engage the inner surface of said member to urge said member outer surface to move radially outwardly into engagement with the walls of said body about said opening.