Receptacles – Closures – Removable closure guided in rotary movement
Patent
1992-08-19
1994-10-11
Shoap, Allan N.
Receptacles
Closures
Removable closure guided in rotary movement
220254, 220284, 220304, 220326, 220366, 220367, 220375, 220601, B65D 5116
Patent
active
053539443
ABSTRACT:
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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Exhibits A, B, and C relate to a Clay & Bailey Model 1890 Manway hatch.
Exhibit D is a brochure provided by Poly Processing Company entitled Transtore Tanks Series II dated Jun. 1, 1988.
Exhibit E is a photograph of a threaded hatch opening and cover associated with the Poly Processing tank described in Exhibit D.
Exhibit F is a brochure provided by Bonar Plastics entitled Bonar Plastics Poly Payloader.RTM..
Exhibit G is a photograph of a threaded access opening and cover associated with the Bonar Plastics device described in Exhibit F.
Davis Gail F.
Matthews James F.
Brown Dennis D.
Cronin Stephen
Duzan James R.
Halliburton Company
Shoap Allan N.
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