Removable hatch lid
AssigneeTexaco Inc.
InventorClaude M. Begnaud
Life of this patent
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Abstract
A special purpose removable hatch lid. It incorporates a connector for attaching suction means to it. And, it is adapted for being fastened down over the coaming of a thief hatch which is located on a large tank. The lid is applied prior to entry into the large tank for the purpose of cleaning the interior of the tank. Use of the lid greatly facilitates a degasing of the tank interior.
Claims6
A removable hatch lid for attaching suction means to degas fumes from a large tank, wherein said tank has at least one hatch with a coaming integral therewith,
- said coaming having a flange on one edge only for bolting to said tank,
- said hatch lid comprising
- impervious planar means for contacting said flangess edge of said coaming to close said hatch,
- means for fastening said planar means in sealing relation with said flangless edge of said coaming, and
- gas tight means for coupling said suction means to said planar means for degasing said large tank.
A removable hatch lid for attaching suction means to degas fumes from the interior of a large tank prior to cleaning said interior, wherein said tank has at least one hatch with a coaming integral therewith and a first plurality of bolts therearound, comprising in combination
- a flat metallic plate extending radially beyond the walls of said coaming,
- a resilient material gasket layer bonded to said metallic plate for making a gas tight seal with said coaming,
- a nipple centrally located and integrally attached to said flat plate for location over the inside of said coaming and adapted for attaching said suction means thereto, and
- a second plurality of bolts aligned with said first plurality of bolts and a corresponding plurality of socket means all for fastening said plate and gasket layer onto said coaming with a gas tight connection.
Dependencies are inferred from the claim text.