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JP2013007401A - Tip-resistant pad for heavy article and seismic isolation structure - Google Patents

Tip-resistant pad for heavy article and seismic isolation structure Download PDF

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JP2013007401A
JP2013007401A JP2011138731A JP2011138731A JP2013007401A JP 2013007401 A JP2013007401 A JP 2013007401A JP 2011138731 A JP2011138731 A JP 2011138731A JP 2011138731 A JP2011138731 A JP 2011138731A JP 2013007401 A JP2013007401 A JP 2013007401A
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elastic body
point
fall prevention
support
planar elastic
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Kikuo Sugita
規久男 杉田
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1485—Servers; Data center rooms, e.g. 19-inch computer racks
    • H05K7/1488—Cabinets therefor, e.g. chassis or racks or mechanical interfaces between blades and support structures
    • H05K7/1495—Cabinets therefor, e.g. chassis or racks or mechanical interfaces between blades and support structures providing data protection in case of earthquakes, floods, storms, nuclear explosions, intrusions, fire
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/021—Decoupling of vibrations by means of point-of-contact supports, e.g. ball bearings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H13/00—Monuments; Tombs; Burial vaults; Columbaria

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Prevention Devices (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Abstract

PROBLEM TO BE SOLVED: To enhance a tip resistance effect for a heavy article by increasing an effective area of a sheet elastic body exhibiting a vibration absorbing function.SOLUTION: In a gravestone structure 1, four tip-resistant pads 4 and as many pressure plates 5 as the pads 4 are interposed between a foundation stone 2 and a headstone 3. Each tip-resistant pad 4 has a point support member 7 embedded in an eccentric position in a sheet elastic body 6. The sheet elastic body 6 is formed of a flexible and transparent gel elastic material that absorbs vibrations of the headstone 3. The point support member 7 is formed of metal or resin harder than the gel elastic material and undergoes plastic deformation under the load of the headstone 3. In order to render the gravestone structure 1 seismically isolated, four tip-resistant pads 4 are arranged on a top face of the foundation stone 2 with the point support members 7 oriented inward of the foundation stone 2.

Description

本発明は、地震による重量物の転倒を防止する転倒防止パッドと、このパッドを用いた免震建造物とに関する。   The present invention relates to a fall prevention pad that prevents a heavy object from falling due to an earthquake, and a seismic isolation building using the pad.

従来、図７に示すような転倒防止パッド５１が知られている。このパッド５１は、重量物の震動を吸収する柔軟材料からなる面状弾性体５２と、重量物の荷重によって塑性変形する点状支持体５３とを備えている。点状支持体５３は、リング５４を介して面状支持体５２の中心に埋設保持されている。そして、図８に示すような墓石建造物５５において、４枚の転倒防止パッド５１を基礎石５６と竿石５７との間に介装し、重量物である竿石５７の地震に伴う転倒を防止できるようになっている。   Conventionally, a fall prevention pad 51 as shown in FIG. 7 is known. The pad 51 includes a planar elastic body 52 made of a flexible material that absorbs vibrations of heavy objects, and a point-like support body 53 that is plastically deformed by the load of the heavy objects. The point-like support 53 is embedded and held in the center of the planar support 52 via a ring 54. And in the tombstone building 55 as shown in FIG. 8, the four fall prevention pads 51 are interposed between the foundation stone 56 and the meteorite 57, and the fall caused by the earthquake of the meteorite 57 which is a heavy object is caused. It can be prevented.

特許文献１には、重量物の震動を効率よく吸収するために、面状弾性体５２をポリウレタンゴム、ブチルゴム、アクリルゴム、シリコンゴム、天然ゴム等の柔軟な弾性材料でシート状に成形するとともに、重量物の荷重で面状弾性体５２が押し潰されないように、点状支持体５３をスズ、ハンダ、鉛、銀またはプラスチック等の比較的硬質の塑性変形材料で球状に形成した転倒防止シートが記載されている。   In Patent Document 1, in order to efficiently absorb the vibration of heavy objects, the planar elastic body 52 is molded into a sheet shape from a flexible elastic material such as polyurethane rubber, butyl rubber, acrylic rubber, silicon rubber, natural rubber, and the like. In order to prevent the sheet-like elastic body 52 from being crushed by a heavy load, the tip-like support 53 is formed into a spherical shape with a relatively hard plastic deformation material such as tin, solder, lead, silver, or plastic. Is described.

特許第４２３８２７７号公報Japanese Patent No. 4238277

ところが、従来の転倒防止パッド５１によると、比較的硬質の点状支持体５３がそれよりも軟質の面状弾性体５２の中心に保持されているので、震動吸収作用を発揮する面状弾性体５２の有効面積が減少する。例えば図８に示すように、４枚の転倒防止パッド５１を使用した場合は、各面状弾性体５２において約１／４の面積が基礎石５６の内側領域（点状支持体５３を結ぶ四角形の内側領域）に含まれる。このため、面状弾性体５２の有効面積が減少し、重量物の転倒防止効果に悪影響が及ぶという問題点があった。   However, according to the conventional fall prevention pad 51, the relatively hard point-like support body 53 is held at the center of the softer surface elastic body 52, so that the surface elastic body exhibiting a vibration absorbing function. The effective area of 52 is reduced. For example, as shown in FIG. 8, when four fall prevention pads 51 are used, an area of about ¼ in each planar elastic body 52 is an inner region of the base stone 56 (a quadrilateral connecting the dotted supports 53. Inside area). For this reason, there is a problem that the effective area of the planar elastic body 52 is reduced, and the effect of preventing the falling of heavy objects is adversely affected.

そこで、本発明の目的は、面状弾性体の有効面積を拡大し、重量物の転倒防止効果を高めることができる転倒防止パッド、および、このパッドを使用した免震建造物を提供することにある。   Accordingly, an object of the present invention is to provide an anti-tip pad that can increase the effective area of the planar elastic body and increase the anti-falling effect of heavy objects, and a seismic isolation structure using this pad. is there.

上記課題を解決するために、本発明は、地震による重量物の転倒を防止するために、基礎と重量物との間に介装される転倒防止パッドにおいて、次のような手段を提供する。   In order to solve the above-mentioned problems, the present invention provides the following means in a fall prevention pad interposed between a foundation and a heavy load in order to prevent the fall of a heavy load due to an earthquake.

（１）重量物の震動を吸収する柔軟材料からなる面状弾性体と、面状弾性体よりも硬質で重量物の荷重によって塑性変形する材料からなる点状支持体とを備え、点状支持体を面状弾性体の中心から偏った位置に保持したことを特徴とする転倒防止パッド。 (1) A point-like support comprising: a sheet-like elastic body made of a flexible material that absorbs vibrations of heavy objects; and a point-like support made of a material that is harder than the sheet-like elastic body and plastically deforms under the load of the object A fall prevention pad characterized in that the body is held at a position deviated from the center of the planar elastic body.

（２）点状支持体を面状弾性体の角部に埋設したことを特徴とする転倒防止パッド。 (2) A fall prevention pad, characterized in that a point-like support is embedded in a corner of a planar elastic body.

（３）点状支持体を一部が露出する状態で面状弾性体に埋設したことを特徴とする転倒防止パッド。 (3) A fall prevention pad, characterized in that a point-like support is embedded in a planar elastic body with a part thereof exposed.

（４）面状弾性体を透明なゲル状弾性材料で成形したことを特徴とする転倒防止パッド。 (4) A toppling prevention pad, wherein a planar elastic body is formed of a transparent gel elastic material.

（５）面状弾性体の表裏両面に粘着層を設けたことを特徴とする転倒防止パッド。 (5) A fall prevention pad, characterized in that adhesive layers are provided on both the front and back surfaces of the planar elastic body.

また、本発明は、地震による重量物の転倒を防止するために、基礎と重量物との間に転倒防止パッドを介装した免震建造物において、次のような手段を提供する。   Further, the present invention provides the following means in a seismic isolation building in which a fall prevention pad is interposed between a foundation and a heavy load in order to prevent the fall of a heavy load due to an earthquake.

（６）転倒防止パッドが、重量物の震動を吸収する柔軟材料からなる面状弾性体と、面状弾性体よりも硬質で重量物の荷重によって塑性変形する材料からなる点状支持体とを備え、点状支持体が面状弾性体の中心から偏った位置に保持され、少なくとも３つの転倒防止パッドが点状支持体を基礎の内側に向けた姿勢で配置されていることを特徴とする免震建造物。 (6) A planar elastic body made of a flexible material in which the fall prevention pad absorbs vibrations of a heavy object, and a pointed support made of a material harder than the planar elastic body and plastically deformed by the load of the heavy object The point-like support body is held at a position deviated from the center of the planar elastic body, and at least three fall prevention pads are arranged in a posture with the point-like support body facing the inside of the foundation. Seismic isolation building.

（７）転倒防止パッドと重量物との間に、面状弾性体および点状支持体を同じ高さに圧縮するための加圧プレートが介装されていることを特徴とする免震建造物。 (7) A base-isolated building characterized in that a pressure plate for compressing the planar elastic body and the point-like support body to the same height is interposed between the fall prevention pad and the heavy object. .

本発明の転倒防止パッドおよび免震建造物によれば、点状支持体を面状弾性体の中心から偏った位置に保持したので、点状支持体を基礎の内側に向けて配置することによって、面状弾性体の有効面積を拡大し、重量物の転倒防止効果を高めることができる。   According to the fall-preventing pad and the base-isolated building of the present invention, since the point-like support is held at a position deviated from the center of the planar elastic body, the point-like support is arranged toward the inside of the foundation. In addition, the effective area of the planar elastic body can be expanded, and the effect of preventing the falling of heavy objects can be enhanced.

本発明の一実施形態を示す墓石建造物の分解斜視図である。It is a disassembled perspective view of the tombstone building which shows one Embodiment of this invention. 墓石建造物に使用する転倒防止パッドを示す斜視図である。It is a perspective view which shows the fall prevention pad used for a tombstone building. 転倒防止パッドの作用を示す墓石建造物の立面図である。It is an elevation view of a tombstone building showing the action of the fall prevention pad. 転倒防止パッドの配置を示す墓石建造物の平面図である。It is a top view of a tombstone building which shows arrangement | positioning of a fall prevention pad. 転倒防止パッドにおける面状弾性体の変更例を示す斜視図である。It is a perspective view which shows the example of a change of the planar elastic body in a fall prevention pad. 転倒防止パッドにおける点状支持体の変更例を示す斜視図である。It is a perspective view which shows the example of a change of the dotted | punctate support body in a fall prevention pad. 従来の転倒防止パッドを示す斜視図である。It is a perspective view which shows the conventional fall prevention pad. 従来の転倒防止パッドの配置を示す墓石建造物の平面図である。It is a top view of the tombstone building which shows arrangement | positioning of the conventional fall prevention pad.

以下、本発明を墓石建造物に具体化した一実施形態を図面に基づいて説明する。図１に示す墓石建造物１は地盤上に基礎石２を備え、基礎石２の上に重量物である竿石３が立てられている。基礎石２と竿石３との間には４枚の転倒防止パッド４が介装され、各パッド４と竿石３との間に加圧プレート５が設けられている。そして、地震発生時に、４枚の転倒防止パッド４によって竿石３の転倒を防止できるようになっている。   Hereinafter, an embodiment in which the present invention is embodied in a tombstone building will be described with reference to the drawings. The tombstone building 1 shown in FIG. 1 includes a foundation stone 2 on the ground, and a meteorite 3 that is a heavy object is erected on the foundation stone 2. Four fall prevention pads 4 are interposed between the base stone 2 and the meteorite 3, and a pressure plate 5 is provided between each pad 4 and the meteorite 3. When the earthquake occurs, the four fall prevention pads 4 can prevent the meteorite 3 from falling.

図２（ａ）に示すように、転倒防止パッド４は、角付き円形の面状弾性体６と、球形の点状支持体７と、円環状のホルダ８とを備えている。面状弾性体６は、弾粘性を保有する柔軟な透明ゲル状弾性材料で成形され、中心から偏った位置に角部６ａを備えている。点状支持体７は、ゲル状弾性材料よりも硬質の金属または樹脂で成形され、ホルダ８を介して面状弾性体６の角部６ａに埋設され、竿石３の荷重によって塑性変形する。なお、図２（ｂ）に示すように、ホルダ８を省き、点状支持体７をゲル状弾性材料中に直に埋設してもよい。   As shown in FIG. 2A, the fall prevention pad 4 includes a cornered circular surface elastic body 6, a spherical point-like support body 7, and an annular holder 8. The planar elastic body 6 is formed of a flexible transparent gel elastic material having elasto-viscosity, and includes a corner 6a at a position deviated from the center. The point-like support 7 is formed of a metal or resin harder than the gel-like elastic material, is embedded in the corner 6 a of the planar elastic body 6 through the holder 8, and is plastically deformed by the load of the meteorite 3. In addition, as shown in FIG.2 (b), the holder 8 may be omitted and the dotted | punctate support body 7 may be directly embed | buried in a gel-like elastic material.

図３（ａ）に示すように、点状支持体７の直径は面状弾性体６の厚さよりも大きく、転倒防止パッド４の自然状態で、点状支持体７の一部が面状弾性体６の表面より露出する。面状弾性体６は表裏両面に粘着層６ｂ，６ｃを備え、裏側粘着層６ｂが基礎石２に接着し、表側粘着層６ｃが加圧プレート５に接着する。図３（ｂ）に示すように、加圧プレート５は、面状弾性体６よりも若干大きな面積で形成され、竿石３の下面に接着剤（図示略）で接着され、竿石３の荷重を受けて面状弾性体６と点状支持体７を同じ高さに圧縮する。   As shown in FIG. 3A, the diameter of the point support 7 is larger than the thickness of the planar elastic body 6, and a part of the point support 7 is planar elastic in the natural state of the fall prevention pad 4. It is exposed from the surface of the body 6. The sheet-like elastic body 6 includes adhesive layers 6 b and 6 c on both front and back surfaces, the back-side adhesive layer 6 b adheres to the foundation stone 2, and the front-side adhesive layer 6 c adheres to the pressure plate 5. As shown in FIG. 3B, the pressure plate 5 is formed with a slightly larger area than the planar elastic body 6 and is adhered to the lower surface of the meteorite 3 with an adhesive (not shown). Under the load, the planar elastic body 6 and the point-like support 7 are compressed to the same height.

図４に示すように、墓石建造物１の免震施工に際しては、４枚の転倒防止パッド４を基礎石２の上面に貼り付け、それぞれのパッド４に加圧プレート５を被着し、パッド４およびプレート５を基礎石２と竿石３との間に介装する。このとき、転倒防止パッド４は、４枚共に点状支持体７が基礎石２の内側を向く姿勢で基礎石２上に配置する。こうすれば、点状支持体７が面状弾性体６の偏心位置に保持されているので、ゲル状弾性材料の大部分が基礎石２の外側領域（点状支持体７を結ぶ四角形の外側領域）に配置される。   As shown in FIG. 4, when the tombstone building 1 is subjected to seismic isolation, four fall prevention pads 4 are attached to the upper surface of the foundation stone 2, and a pressure plate 5 is attached to each pad 4. 4 and the plate 5 are interposed between the foundation stone 2 and the meteorite 3. At this time, the four fall prevention pads 4 are arranged on the foundation stone 2 in such a posture that the point-like supports 7 face the inside of the foundation stone 2. In this way, since the point-like support 7 is held at the eccentric position of the planar elastic body 6, most of the gel-like elastic material is outside the area of the base stone 2 (the outside of the square connecting the point-like support 7. Area).

したがって、この実施形態の免震墓石建造物１によれば、震動吸収作用を発揮する面状弾性体６の有効面積を拡大し、竿石３の転倒防止効果を高めることができる。また、点状支持体７が一部を露出させた状態で透明な面状弾性体６の角部６ａに埋設されているため、施工に際して、転倒防止パッド４を正しい向きで基礎石２上に簡単に接着できる。しかも、加圧プレート５が転倒防止パッド４の全体を均等な高さに圧縮するので、全方位の震動を均一に吸収できるうえ、竿石３の垂直度を容易に調整できる利点もある。   Therefore, according to the seismic isolation tombstone building 1 of this embodiment, the effective area of the planar elastic body 6 that exhibits the vibration absorbing action can be expanded, and the fall prevention effect of the meteorite 3 can be enhanced. Further, since the point-like support 7 is partially embedded and is embedded in the corner 6a of the transparent planar elastic body 6, the fall-preventing pad 4 is placed on the foundation stone 2 in the correct orientation during construction. Easy to bond. In addition, since the pressure plate 5 compresses the entire fall prevention pad 4 to a uniform height, it is possible to uniformly absorb vibrations in all directions and to easily adjust the verticality of the meteorite 3.

本発明は、上記実施形態に限定されるものではなく、以下に例示するように、面状弾性体や点状支持体の形状、あるいは、転倒防止パッドの用途を適宜に変更して実施することもできる。   The present invention is not limited to the above-described embodiment, and as illustrated below, the shape of the planar elastic body or the point-like support body, or the use of the tipping prevention pad should be changed as appropriate. You can also.

（１）図５（ａ）に示すように、面状弾性体１６を四角形に形成し、いずれか一つの角部１６ａに点状支持体７を埋設すること。
（２）図５（ｂ）に示すように、面状弾性体２６を三角形に形成し、いずれか一つの角部２６ａに点状支持体７を埋設すること。 (1) As shown in FIG. 5A, the planar elastic body 16 is formed in a quadrangular shape, and the point-like support body 7 is embedded in any one corner 16a.
(2) As shown in FIG.5 (b), the planar elastic body 26 is formed in a triangle, and the point-like support body 7 is embed | buried in any one corner | angular part 26a.

（３）図６に示すように、点状支持体３７を（ａ）円錐、（ｂ）三角錐、（ｃ）円柱、（ｄ）６面体、（ｅ）１２面体、（ｆ）２０面体に形成すること。
（４）図２、図５に示す転倒防止パッド４を灯篭、手水鉢、石碑等の石材建造物のほか、アンカーボルトで固定できない木材建造物または鋼材建造物に適用すること。 (3) As shown in FIG. 6, the point-like support body 37 is changed to (a) cone, (b) triangular pyramid, (c) cylinder, (d) hexahedron, (e) dodecahedron, (f) icosahedron. Forming.
(4) Apply the fall prevention pad 4 shown in FIGS. 2 and 5 to a stone structure such as a lantern, a hand basin, a stone monument, etc., or a wood structure or a steel structure that cannot be fixed with an anchor bolt.

１ 墓石建造物
２ 基礎石
３ 竿石
４ 転倒防止パッド
５ 加圧プレート
６ 面状弾性体
６ａ 角部
６ｂ 裏側粘着層
６ｃ 表側粘着層
７ 点状支持体 DESCRIPTION OF SYMBOLS 1 Tombstone building 2 Foundation stone 3 Meteorite 4 Fall prevention pad 5 Pressure plate 6 Surface elastic body 6a Corner | angular part 6b Back side adhesive layer 6c Front side adhesive layer 7 Point support

Claims (7)

地震による重量物の転倒を防止するために、基礎と重量物との間に介装される転倒防止パッドにおいて、重量物の震動を吸収する柔軟材料からなる面状弾性体と、面状弾性体よりも硬質で重量物の荷重によって塑性変形する材料からなる点状支持体とを備え、点状支持体を面状弾性体の中心から偏った位置に保持したことを特徴とする転倒防止パッド。   In order to prevent the fall of heavy objects due to an earthquake, a planar elastic body made of a flexible material that absorbs vibrations of heavy objects and a planar elastic body in a fall prevention pad interposed between the foundation and the heavy object And a point-like support made of a material that is harder and plastically deformed by the load of a heavy object, and the point-like support is held at a position offset from the center of the planar elastic body. 前記点状支持体を面状弾性体の角部に埋設した請求項１記載の転倒防止パッド。   The fall prevention pad according to claim 1, wherein the point-like support is embedded in a corner of a planar elastic body. 前記点状支持体を一部が露出する状態で面状弾性体に埋設した請求項１または２記載の転倒防止パッド。   The overturn prevention pad according to claim 1 or 2, wherein the point-like support is embedded in a planar elastic body with a part thereof exposed. 前記面状弾性体を透明なゲル状弾性材料で成形した請求項１、２または３記載の転倒防止パッド。   The fall prevention pad according to claim 1, 2, or 3, wherein the planar elastic body is formed of a transparent gel elastic material. 前記面状弾性体の表裏両面に粘着層を設けた請求項１〜４の何れか一項に記載の転倒防止パッド。   The fall prevention pad as described in any one of Claims 1-4 which provided the adhesion layer in the front and back both surfaces of the said planar elastic body. 地震による重量物の転倒を防止するために、基礎と重量物との間に転倒防止パッドを介装した建造物において、前記転倒防止パッドが、重量物の震動を吸収する柔軟材料からなる面状弾性体と、面状弾性体よりも硬質で重量物の荷重によって塑性変形する材料からなる点状支持体とを備え、点状支持体が面状弾性体の中心から偏った位置に保持され、少なくとも３つの転倒防止パッドが点状支持体を基礎の内側に向けた姿勢で配置されていることを特徴とする免震建造物。   In a structure in which a fall prevention pad is interposed between a foundation and a heavy load to prevent the fall of a heavy load due to an earthquake, the fall prevention pad is a planar shape made of a flexible material that absorbs the vibration of the heavy load. An elastic body and a point-like support made of a material harder than the planar elastic body and plastically deformed by the load of a heavy object, the point-like support being held at a position deviated from the center of the planar elastic body, A base-isolated structure, wherein at least three fall prevention pads are arranged in a posture with a point-like support facing the inside of the foundation. 前記転倒防止パッドと重量物との間に、面状弾性体および点状支持体を同じ高さに圧縮するための加圧プレートが介装されている請求項６記載の免震建造物。   The base-isolated building according to claim 6, wherein a pressure plate for compressing the planar elastic body and the point-like support body to the same height is interposed between the fall prevention pad and the heavy object.
JP2011138731A 2011-06-22 2011-06-22 Tip-resistant pad for heavy article and seismic isolation structure Withdrawn JP2013007401A (en)

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EP2722552A4 (en) * 2011-06-17 2016-03-30 Kikuo Sugita Method for preventing overturn of trestle
US9332670B1 (en) * 2012-11-20 2016-05-03 Amazon Technologies, Inc. Data center module with leveling pad
EP2886749B1 (en) * 2013-11-14 2016-03-23 Korea Institute of Civil Engineering and Building Technology Vibration isolation structure using precast concrete shear-key block and anti-vibration pad, and method for controlling anti-vibration of structure using the same
DE102015221864A1 (en) * 2015-11-06 2017-05-11 Maurer Söhne Engineering GmbH & Co. KG Structural bearings
ITUB20160880A1 (en) * 2016-02-19 2017-08-19 Modula S P A DEVICE FOR SEISMIC INSULATION OF STRUCTURES
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US3771270A (en) * 1971-12-13 1973-11-13 J Byers Self-centering horizontally translatable support/hold-down apparatus for building structures and the like
US4941640A (en) * 1985-03-20 1990-07-17 Tokico Ltd. Vibration isolating apparatus
CA2643103A1 (en) * 2005-02-23 2006-08-31 Kikuo Sugita Turnover preventive sheet

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