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US 4,114,901 AGranted
Seal for unloading hatch of hopper barge or similar vessel
AssigneeN.V. Industrieele Handelscombinatie Holland
InventorHendrik Pot
Life of this patent
Estimating the term…
Abstract
A hopper barge has an unloading opening covered by a slide that moves parallel to the plane of the opening. In the closed position, the slide is sealed by an inflatable seal disposed in a channel that opens toward the slide and that surrounds the opening.
Claims3
In a hopper barge having an unloading opening and a slide movable parallel to the plane of the opening to open and close the opening and an elastic seal surrounding the opening to seal against the slide in the closed position of the slide;
- the improvement in which the sealing member is inflatable, means to inflate the inflatable sealing member, a channel of rectangular cross-section that surrounds said opening and opens toward said slide, and means mounting said slide for sliding movement in one plane only, with the slide spaced a substantially constant distance from said channel.
Dependencies are inferred from the claim text.