Receptacles – Closures – Vent in closure
Patent
1990-03-08
1991-11-12
Marcus, Stephen
Receptacles
Closures
Vent in closure
220314, 220371, 220374, 55511, 55495, 553851, 553852, B65D 5116, B01D 5000, B01D 3908
Patent
active
050640895
ABSTRACT:
A vented hatch cover for an enclosed vessel having a cover body sized to overlie and cover a hatch opening defined by an upstanding coaming. A pair of air passages are defined by the cover body and a pair of hoods connected thereto. The hoods define air inlet opening and a plenum which communicates with air outlet openings in the interior of the cover body. The air passages permit air flow in sufficient volume to vent the vessel and to empty the vessel by high speed vacuum unloading. A filter is removably retained on the hoods in the air inlet openings. A filter screen on the interior of the cover prevents contamination of the air passages from the inside. A latching arm provides downward pressure on the hatch when in a sealing position and the capability of pivoting the hatch cover together with the latching arm when it is moved. The cover is floatingly engaged in the arm.
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patent: 4819830 (1989-04-01), Schultz
Marcus Stephen
Salco Products Inc.
Schwarz Paul A.
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