US2013284741A1PendingUtilityA1

Floating body

25
Assignee: DAIGO KUNIHARUPriority: Jan 14, 2011Filed: Jan 12, 2012Published: Oct 31, 2013
Est. expiryJan 14, 2031(~4.5 yrs left)· nominal 20-yr term from priority
Inventors:Kuniharu DaigoToshio SendaAkifumi Matsunae
B65D 88/50B65D 88/34B65D 90/22
25
PatentIndex Score
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Cited by
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References
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Claims

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.

Claims

exact text as granted — not AI-modified
1 . 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.   
     
     
         2 . The floating body according to  claim 1 ,
 wherein the main body is a cylinder in which a number of the opening is two,   the lid is provided for each opening of the cylinder by the seaming, and   the first gap and the first contact portion are provided between one lid and one opening to which the one lid is attached and between other lid and other opening.   
     
     
         3 . The floating body according to  claim 1 ,
 wherein the floating body is a square can made of a metal.   
     
     
         4 . The floating body according to  claim 1 ,
 wherein, when a portion at the seaming is viewed by a cross section including a direction of the approach and separation, the opening of the main body and the edge portion of the lid are engaged with each other.   
     
     
         5 . The floating body according to  claim 1 ,
 wherein the first contact portion is a line contact portion which is formed in a ring shape along the opening between the opening and the edge portion.   
     
     
         6 . The floating body according to  claim 1 ,
 wherein a number of turns of the seaming is equal to or greater than two.   
     
     
         7 . The floating body according to  claim 6 ,
 wherein, when a portion at the seaming between the opening and the edge portion is viewed by a cross section including a direction of the approach and separation, the first gap has a plurality of linear gap portions along the direction of the approach and separation, and folded gap portions which are folded to connect the linear gap portions, and   when each of the linear gap portions is viewed at an intermediate position in a length direction thereof and by a cross section intersecting the direction of the approach and separation, an average gap size of the linear gap portions is equal to or greater than 100 μm and equal to or smaller than 175 μm.   
     
     
         8 . The floating body according to  claim 1 ,
 wherein a sheet thickness of the main body is in a range of 0.20 mm to 0.32 mm, and   a sheet thickness of the lid is in a range of 0.20 mm to 0.32 mm.   
     
     
         9 . The floating body according to  claim 1 ,
 wherein the main body 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 the bonding is made by a seaming, and   wherein, between the two sides which are seamed,   a second gap which allows a communication between the internal space and the external space of the main body, and permits a movement of an approach and separation between the two sides is provided, and   a second contact portion which blocks the second gap when the two sides are closest to each other is provided.   
     
     
         10 . The floating body according to  claim 9 ,
 wherein a number of turns of the seaming between the two sides is equal to or greater than two.   
     
     
         11 . The floating body according to  claim 10 ,
 wherein the second contact portion is a line contact portion between the two sides.   
     
     
         12 . 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.   
     
     
         13 . The floating body according to  claim 12 ,
 wherein a number of turns of the seaming between the two sides is equal to or greater than two.   
     
     
         14 . The floating body according to  claim 12 ,
 wherein the third contact portion is a line contact portion between the two sides.   
     
     
         15 . The floating body according to  claim 2 ,
 wherein the main body 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 the bonding is made by a seaming, and   wherein, between the two sides which are seamed,   a second gap which allows a communication between the internal space and the external space of the main body, and permits a movement of an approach and separation between the two sides is provided, and   a second contact portion which blocks the second gap when the two sides are closest to each other is provided.   
     
     
         16 . The floating body according to  claim 3 ,
 wherein the main body 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 the bonding is made by a seaming, and   wherein, between the two sides which are seamed,   a second gap which allows a communication between the internal space and the external space of the main body, and permits a movement of an approach and separation between the two sides is provided, and   a second contact portion which blocks the second gap when the two sides are closest to each other is provided.   
     
     
         17 . The floating body according to  claim 4 ,
 wherein the main body 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 the bonding is made by a seaming, and   wherein, between the two sides which are seamed,   a second gap which allows a communication between the internal space and the external space of the main body, and permits a movement of an approach and separation between the two sides is provided, and   a second contact portion which blocks the second gap when the two sides are closest to each other is provided.   
     
     
         18 . The floating body according to  claim 5 ,
 wherein the main body 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 the bonding is made by a seaming, and   wherein, between the two sides which are seamed,   a second gap which allows a communication between the internal space and the external space of the main body, and permits a movement of an approach and separation between the two sides is provided, and   a second contact portion which blocks the second gap when the two sides are closest to each other is provided.   
     
     
         19 . The floating body according to  claim 6 ,
 wherein the main body 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 the bonding is made by a seaming, and   wherein, between the two sides which are seamed,   a second gap which allows a communication between the internal space and the external space of the main body, and permits a movement of an approach and separation between the two sides is provided, and   a second contact portion which blocks the second gap when the two sides are closest to each other is provided.   
     
     
         20 . The floating body according to  claim 7 ,
 wherein the main body 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 the bonding is made by a seaming, and   wherein, between the two sides which are seamed,   a second gap which allows a communication between the internal space and the external space of the main body, and permits a movement of an approach and separation between the two sides is provided, and   a second contact portion which blocks the second gap when the two sides are closest to each other is provided.   
     
     
         21 . The floating body according  claim 8 ,
 wherein the main body 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 the bonding is made by a seaming, and   wherein, between the two sides which are seamed,   a second gap which allows a communication between the internal space and the external space of the main body, and permits a movement of an approach and separation between the two sides is provided, and   a second contact portion which blocks the second gap when the two sides are closest to each other is provided.   
     
     
         22 . The floating body according to  claim 15 ,
 wherein a number of turns of the seaming between the two sides is equal to or greater than two.   
     
     
         23 . The floating body according to  claim 16 ,
 wherein a number of turns of the seaming between the two sides is equal to or greater than two.   
     
     
         24 . The floating body according to  claim 17 ,
 wherein a number of turns of the seaming between the two sides is equal to or greater than two.   
     
     
         25 . The floating body according to  claim 18 ,
 wherein a number of turns of the seaming between the two sides is equal to or greater than two.   
     
     
         26 . The floating body according to  claim 19 ,
 wherein a number of turns of the seaming between the two sides is equal to or greater than two.   
     
     
         27 . The floating body according to  claim 20 ,
 wherein a number of turns of the seaming between the two sides is equal to or greater than two.   
     
     
         28 . The floating body according to  claim 21 ,
 wherein a number of turns of the seaming between the two sides is equal to or greater than two.   
     
     
         29 . The floating body according to  claim 22 ,
 wherein the second contact portion is a line contact portion between the two sides.   
     
     
         30 . The floating body according to  claim 23 ,
 wherein the second contact portion is a line contact portion between the two sides.   
     
     
         31 . The floating body according to  claim 24 ,
 wherein the second contact portion is a line contact portion between the two sides.   
     
     
         32 . The floating body according to  claim 25 ,
 wherein the second contact portion is a line contact portion between the two sides.   
     
     
         33 . The floating body according to  claim 26 ,
 wherein the second contact portion is a line contact portion between the two sides.   
     
     
         34 . The floating body according to  claim 27 ,
 wherein the second contact portion is a line contact portion between the two sides.   
     
     
         35 . The floating body according to  claim 28 ,
 wherein the second contact portion is a line contact portion between the two sides.

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