Floating body
AssigneeNippon Steel & Sumitomo Metal Corporation
InventorsKuniharu Daigo, Toshio Senda, Akifumi Matsunae
Life of this patent
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Abstract
A floating body which is accommodated in a float chamber of a floating roof of a floating roof-type tank includes a main body made of a metal in which an opening is formed in at least one location and which has an internal space, and a lid made of a metal which covers the opening and has an edge portion attached to the opening by a seaming. Between the opening and the edge portion, a first gap which allows a communication between an external space and the internal space of the main body, and permits a movement of an approach and separation between the main body and the lid is provided, and a first contact portion which blocks the first gap when the lid is closest to the main body is provided.
Claims35
A floating body which is accommodated in a float chamber of a floating roof of a floating roof-type tank, the floating body comprising:
- a main body made of a metal in which an opening is formed in at least one location and which has an internal space;
- and
- a lid made of a metal which covers the opening and has an edge portion attached to the opening by a seaming,
- wherein, between the opening and the edge portion,
- a first gap which allows a communication between an external space and the internal space of the main body, and permits a movement of an approach and separation between the main body and the lid is provided, and
- a first contact portion which blocks the first gap when the lid is closest to the main body is provided.
A floating body which is accommodated in a float chamber of a floating roof of a floating roof-type tank, the floating body comprising:
- a main body which is formed by a folding of a rectangular metal sheet in a cylindrical shape and by a bonding of two sides which are opposite each other;
- and
- a lid which is fixed to cover an opening of the main body,
- wherein the bonding is made by a seaming, and
- wherein, between the two sides which are seamed,
- a third gap which allows a communication between an internal space and an external space of the main body, and permits a movement of an approach and separation between the two sides is provided, and
- a third contact portion which blocks the third gap when the two sides are closest to each other.
Dependencies are inferred from the claim text.