Halliburton Company

James F Matthews

Gail F Davis

Brett L Muckelrath

Apparatus for holding materials including a container having a container wall, a non-circular container opening extending through the container wall, a non-circular container flange connected to the exterior of the container wall and surrounding the container opening. A non-metallic, non-circular access hatch connectable to the container flange by bolting and having a plurality of apertures extending therethrough is provided. The non-metallic, non-circular access hatch preferably includes a primary opening having a removable cover and a variety of associated components being accommodated by respective apertures such as a recirculation line, a pressure relief valve, a vacuum relief valve, and a fluid level indicator. Preferably the hatch apparatus and the primary opening cover are made of an ultra high molecular weight polyethylene material.

Non-metallic obround blanking hatch apparatus

An apparatus for holding materials comprising: a container including a container wall and having a first container opening extending through the container wall; a first container flange connected to the exterior of the container wall surrounding the first container opening; and a non-metallic blanking hatch connectable to the first container flange by bolting. The non-metallic blanking hatch has a plurality of apertures extending therethrough which provide access to the interior of the container. The inventive apparatus preferably also comprises: (a) a second container flange connected to the exterior of the container wall and surrounding a second container opening extending through the container wall and (b) a non-metallic manway hatch connectable to the second container flange.

Non-metallic blanking hatch apparatus

The present invention provides a hatch apparatus comprising: (a) a non-metallic base having a base flange which is connectable to a container flange by bolting and (b) a non-metallic lid which is threadedly connectable to the non-metallic base. The inventive hatch apparatus can also include a pressure relief device associatable with the non-metallic lid. In one embodiment, the non-metallic lid comprises a single lid member. In a second embodiment, the non-metallic lid comprises two lid members. The inventive hatch apparatus is highly corrosion resistant and convenient to use.

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Duncan, OK, United States of America

James F Matthews