Patent ID: 6453603
Filing Date: 2002-09-24
Classification: A01M,F16L

Abstract:
A non-corrosive bore hole cover apparatus for plugging a hole bored in a substrate comprising:a top plate molded from a non-metallic material, said top plate having a hole therethrough, a bottom side of said top plate having an annular gasket locating ridge formed thereon; a bottom plate molded from a non-metallic material, said bottom plate having a threaded hole therein, a top side of said bottom plate having an annular gasket locating ridge formed thereon; said gasket locating ridges being of substantially equal outer diameter; a compressible ring gasket having an elongated wall, said compressible ring gasket having an inner diameter sized to tightly encircle said outer diameter of said gasket locating ridges, said compressible ring gasket sandwiched between said top plate and said bottom plate such that said gasket locating ridges are inserted in either end of said compressible ring gasket; and a threaded bolt passing through said top plate hole such that a head of said bolt is retained against a top side of said tcp plate, a lower end of said bolt threaded through said hole of said bottom plate, whereby said bolt may be selectively rotated into said threaded hole to draw said top and bottom plate toward one another to thereby compress and circumferentially expand said ring gasket, said gasket locating ridges maintaining alignment of said compressible ring gasket and said top and bottom plates during compression to thereby achieve substantially uniform compression against said bore hole, further comprising said bottom side of said top plate having a plurality of reinforcement rib members formed thereon, said reinforcement rib members radiating outward about said top plate hole, said rib members providing reinforcement for said top plate, said top plate compression gasket locating ridge surrounding said plurality of reinforcing ribs which join said gasket locating ridge, whereby said reinforcing ribs and said gasket locating ridge extend substantially the same distance from the bottom of said top plate.