Plastic hole plug with self-piercing point

Claim 1

A hole plug which is a unitary one-piece injection-molded plastic resin member adapted to fit into a hole in a panel having a tape closing the hole and plastic foam behind the hole, the plug comprising: a top closure wall portion, said top wall portion having a central opening and terminating at its outer edge of the top face in a curved lip and having a bottom support ledge portion which is adapted to rest on the panel face; a shank portion extending from the top wall portion and having a central axis; the shank portion consisting of an upper section connected to the top wall portion and consisting of an annular tube having an outer wall which is smooth and without protrusions and an inner wall forming an elongated cavity extending from said central opening, the outer wall having an outwardly protruding annular point of greatest diameter, said panel being captured between said point of greatest diameter and said bottom support ledge portion, and a lower section having an outer wall having two opposite inwardly directed flat faces meeting in a chisel point to pierce said tape.