JPH05175715A - Method and structure for preventing snow deposition on reflector antenna - Google Patents

Method and structure for preventing snow deposition on reflector antenna

Info

Publication number
JPH05175715A
JPH05175715A JP3337399A JP33739991A JPH05175715A JP H05175715 A JPH05175715 A JP H05175715A JP 3337399 A JP3337399 A JP 3337399A JP 33739991 A JP33739991 A JP 33739991A JP H05175715 A JPH05175715 A JP H05175715A
Authority
JP
Japan
Prior art keywords
radome
actuator
sheet
reflecting mirror
snow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP3337399A
Other languages
Japanese (ja)
Inventor
Masaaki Mikuni
雅明 三国
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP3337399A priority Critical patent/JPH05175715A/en
Publication of JPH05175715A publication Critical patent/JPH05175715A/en
Withdrawn legal-status Critical Current

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  • Details Of Aerials (AREA)

Abstract

PURPOSE:To obtain a snow deposition prevention means at a low cost by covering a sheet radome to an entire antenna, extending the radome, using an actuator and vibrating the sheet radome, thereby shaking off the snow deposited on the surface. CONSTITUTION:A sheet radome 20 made of a resin sheet such as nylon or polyester covers the entire antenna composed of a main reflecting mirror 3, a subreflecting mirror 4, a primary radiator 5, a frame 2 and a supporting member 6. Then the sheet radome 20 is extended to the reflector antenna by providing a coil spring 22 to an end part 21 to pull the sheet radome. Then an actuator 30 is fitted to the supporting member 6 to couple the driven member of the actuator 30 and the sheet radome 20 of the front face part of the main reflection mirror 3. Then lateral vibration in the direction of the arrow A is imparted to the sheet radome 20 to shake off the snow deposited on the surface. Thus, power consumption is reduced, the cost for preventing snow deposition is reduced and the installation cost is decreased.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、リフレクタアンテナの
着雪防止方法及び着雪防止構造に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a snow accretion preventing method and a snow accretion preventing structure for a reflector antenna.

【0002】衛星を利用した映像, 各種データー等の通
信手段の開発に伴い、リフレクタアンテナを備えた小型
地球局が広く提供されている。これらの小型地球局には
リフレクタアンテナの一種であるオフセット型アンテナ
が使用されているが、積雪地域に設置する場合には、着
雪を防止することが要求されている。
Along with the development of communication means such as images using satellites and various data, a small earth station equipped with a reflector antenna has been widely provided. Offset type antennas, which are a kind of reflector antennas, are used in these small earth stations, but when they are installed in snowy areas, it is required to prevent snow accretion.

【0003】[0003]

【従来の技術】図5は、従来例の断面図である。図5に
図示したように、基柱1に主反射鏡3を保持するフレー
ム2を、俯仰角,方位角調整可能に装着している。
2. Description of the Related Art FIG. 5 is a sectional view of a conventional example. As shown in FIG. 5, a frame 2 holding a main reflecting mirror 3 is mounted on a base column 1 so that the elevation angle and azimuth angle can be adjusted.

【0004】また、フレーム2に支持部材6を取付け、
主反射鏡3の斜め下方に対向して副反射鏡4をこの支持
部材6に搭載し、さらに副反射鏡4に対向するように、
一次放射器5を支持部材6に搭載している。
A support member 6 is attached to the frame 2,
The sub-reflecting mirror 4 is mounted on the support member 6 so as to face diagonally below the main reflecting mirror 3, and further faces the sub-reflecting mirror 4.
The primary radiator 5 is mounted on the support member 6.

【0005】10は、ナイロン, ポリエステル等の樹脂シ
ートよりなるシートレードームである。そして、このシ
ートレードーム10をアンテナ全体に被せ張設すること
で、主反射鏡3,副反射鏡4,及び一次放射器5に、直
接雪が降りかかるのを防止している。
Reference numeral 10 is a sheet radome made of a resin sheet of nylon, polyester or the like. By covering the entire antenna with the seat radome 10, it is possible to prevent snow from directly falling on the main reflecting mirror 3, the sub reflecting mirror 4, and the primary radiator 5.

【0006】15は、主反射鏡3の下部に搭載した温風発
生器である。温風発生器15が発生する温風は、ガイド板
16を案内としてシートレードーム10の内面に吹き付けら
れ、シートレードーム10の内面に沿って上昇し、頂上部
で反転して主反射鏡3に沿って降下して、温風発生器15
に吸い込まれるという循環流となっている。
Reference numeral 15 is a warm air generator mounted below the main reflecting mirror 3. The hot air generated by the hot air generator 15 is a guide plate.
It is blown onto the inner surface of the seat radome 10 by using 16 as a guide, rises along the inner surface of the seat radome 10, reverses at the top and descends along the main reflecting mirror 3, and the warm air generator 15
It is a circulating flow that is sucked into.

【0007】また、主反射鏡3の裏面とシートレードー
ム10との間に断熱材11を介在させて、主反射鏡3が外気
により冷却されることを防止している。従来は上述のよ
うに、降雪時には常時温風発生器を駆動することで、温
風発生器の発生する温風でシートレードーム10内部を温
め、シートレードーム10の表面に積もる雪を溶かして水
にして、シートレードーム10の表面を伝って流れ落ちる
ようにしている。
Further, a heat insulating material 11 is interposed between the back surface of the main reflecting mirror 3 and the seat radome 10 to prevent the main reflecting mirror 3 from being cooled by the outside air. Conventionally, as described above, by driving the warm air generator at all times during snowfall, the warm air generated by the warm air generator warms the interior of the seatley dome 10 and melts the snow accumulated on the surface of the seatley dome 10 into water. So that they flow down along the surface of the seat radome 10.

【0008】[0008]

【発明が解決しようとする課題】ところで、従来の着雪
防止手段は、シートレードームの表面の雪を溶かすため
に、雪を溶解する熱量と、シートレードーム,アンテナ
等から風により奪い取られる熱量とを、温風発生器から
供給している。この熱量が大きいことに起因して、温風
発生器が多量の電力を消費し、着雪防止費がコスト高に
なるという問題点があった。
By the way, in the conventional snow accretion preventing means, in order to melt the snow on the surface of the seat radome, the amount of heat for melting the snow and the amount of heat taken away by the wind from the seat radome, antenna, etc. are set. , Is supplied from the hot air generator. Due to the large amount of heat, there is a problem that the warm air generator consumes a large amount of electric power and the snow accretion prevention cost becomes high.

【0009】本発明はこのような点に鑑みて創作された
もので、低コストの着雪防止手段を提供することを目的
としている。
The present invention has been made in view of the above points, and an object thereof is to provide a low-cost snow accretion preventing means.

【0010】[0010]

【課題を解決するための手段】上記の目的を達成するた
めに本発明は、図1に図示したように、アンテナ全体に
シートレードーム20を被せ張設し、アンテナに取着した
アクチュエータ30を用いて、主反射鏡3の前面部のシー
トレードーム20部分に振動を付与することで、シートレ
ードーム20の表面の積雪を振るい落とすという構成とす
る。
To achieve the above object, the present invention uses an actuator 30 in which a seat radome 20 is stretched over the entire antenna and attached to the antenna as shown in FIG. Then, by applying vibration to the seat radome 20 portion on the front surface of the main reflecting mirror 3, the snow on the surface of the seat radome 20 is shaken off.

【0011】またその構造は、図2に例示したように、
アンテナ全体を覆い張設され、シートの集端部21が複数
のコイルばね26を介してリング25に連結してなるシート
レードーム20と、主反射鏡3の前面を外れた所望の位置
に搭載され、被駆動部材が往復直線運動又は回転運動す
るアクチュエータ30と、主反射鏡3の前面部のシートレ
ードーム20の所望の個所とアクチュエータ30の被駆動部
材間を繋ぐ連結部材とを、備えた構成とする。
The structure is as shown in FIG.
The seat radome 20 is stretched over the entire antenna, and the sheet collecting end 21 is connected to the ring 25 via a plurality of coil springs 26, and is mounted at a desired position outside the front surface of the main reflecting mirror 3. A configuration including an actuator 30 in which the driven member reciprocates linearly or rotationally, and a connecting member that connects a desired portion of the seat radome 20 on the front surface of the main reflecting mirror 3 and the driven member of the actuator 30. To do.

【0012】[0012]

【作用】上述のように本発明は、モーターのようなアク
チュエータで、シートレードームを振動させ、シートレ
ードームの表面の積雪を振るい落とすものである。
As described above, the present invention uses an actuator such as a motor to vibrate the seat radome and shake off the snow accumulated on the surface of the seat radome.

【0013】このアクチュエータの消費電力は、シート
レードームの表面に積もる雪を溶かす熱量よりも小さ
い。したがって、本発明の手段によれば、着雪防止費用
が少なくて済む。
The power consumption of this actuator is smaller than the amount of heat that melts the snow accumulated on the surface of the seat radome. Therefore, according to the means of the present invention, the snowfall prevention cost can be reduced.

【0014】また、本発明の構造によれば、シートレー
ドームの集端部が複数のコイルばねを介してリングに連
結し、且つ、アクチュエータの被駆動部材が連結部材を
介して、主反射鏡の前面部のシートレードームの所望の
個所に接続されている。
Further, according to the structure of the present invention, the collecting end portion of the seat radome is connected to the ring through the plurality of coil springs, and the driven member of the actuator is connected through the connecting member to the main reflecting mirror. It is connected to a desired location on the front seat radome.

【0015】よって、アクチュエータを駆動すること
で、シートレードームに無理な引張応力が付与されるこ
となく、シートレードームが大きい振幅で横振動を行
う。即ち、シートレードームの表面の積雪を振るい落と
すことができる。
Therefore, by driving the actuator, the seat radome vibrates laterally with a large amplitude without applying an excessive tensile stress to the seat radome. That is, the snow on the surface of the seat radome can be shaken off.

【0016】[0016]

【実施例】以下図を参照しながら、本発明を具体的に説
明する。なお、全図を通じて同一符号は同一対象物を示
す。
The present invention will be described in detail with reference to the drawings. The same reference numerals denote the same objects throughout the drawings.

【0017】図1は本発明方法の原理を示す図、図2は
本発明の実施例の断面図、図3は本発明の要所の断面
図、図4はシートレードームの集端部の斜視図である。
図1に示すようにリフレクタアンテナは、基柱1に主反
射鏡3を保持するフレーム2を、俯仰角,方位角調整可
能に装着し、フレーム2に支持部材6を取付け、主反射
鏡3の斜め下方に対向して副反射鏡4をこの支持部材6
に搭載し、さらに副反射鏡4に対向するように、一次放
射器5を支持部材6に搭載している。
FIG. 1 is a view showing the principle of the method of the present invention, FIG. 2 is a sectional view of an embodiment of the present invention, FIG. 3 is a sectional view of the essential points of the present invention, and FIG. 4 is a perspective view of the collecting end of a seat radome. It is a figure.
As shown in FIG. 1, in the reflector antenna, a frame 2 holding a main reflecting mirror 3 is mounted on a base column 1 so that the elevation angle and azimuth can be adjusted, a supporting member 6 is attached to the frame 2, and the main reflecting mirror 3 is attached. The sub-reflecting mirror 4 is attached to the supporting member 6 facing diagonally downward.
The primary radiator 5 is mounted on the support member 6 so as to face the sub-reflecting mirror 4.

【0018】20は、ナイロン, ポリエステル等の樹脂シ
ートよりなるシートレードームであって、シートレード
ーム20をアンテナ全体(主反射鏡3,副反射鏡4,一次
放射器5, フレーム2及び支持部材6) を覆うように被
せ、集端部21にコイルばね22を用いて引っ張る寄せるこ
とで、シートレードーム20をリフレクタアンテナに張設
している。
Reference numeral 20 denotes a seat radome made of a resin sheet of nylon, polyester or the like. The seat radome 20 includes the entire antenna (main reflecting mirror 3, sub-reflecting mirror 4, primary radiator 5, frame 2 and supporting member 6). The seat radome 20 is stretched over the reflector antenna by covering it with the cover end and pulling the collecting end portion 21 by using a coil spring 22.

【0019】そして、支持部材6にアクチュエータ30を
搭載し、アクチュエータ30の被駆動部材と、主反射鏡3
の前面部のシートレードーム20部分とを連結して、シー
トレードーム20に矢印A方向の横振動を与え、シートレ
ードーム20の表面の積雪を振るい落としている。
The actuator 30 is mounted on the supporting member 6, and the driven member of the actuator 30 and the main reflecting mirror 3 are mounted.
The seat radome 20 on the front surface of the seat radome 20 is connected to the seat radome 20 to apply lateral vibration in the direction of arrow A to shake off the snow on the surface of the seat radome 20.

【0020】以下図2乃至図4を参照しながら、本発明
の着雪防止構造を説明する。図2において、支持部材6
の突出端部のそれぞれに、シートレードーム20が外接す
るローラ29を取り付けている。
The snow accretion prevention structure of the present invention will be described below with reference to FIGS. 2 to 4. In FIG. 2, the support member 6
A roller 29 with which the seat radome 20 is circumscribed is attached to each of the projecting ends.

【0021】そして、シートレードーム20を、アンテナ
全体(主反射鏡3,副反射鏡4,一次放射器5, フレー
ム2及び支持部材6) を覆うように被せて張設してい
る。一方、主反射鏡3の前面を外れた下部寄りの位置の
支持部材6上に、アクチュエータ30を搭載している。
The seat radome 20 is stretched so as to cover the entire antenna (main reflecting mirror 3, sub-reflecting mirror 4, primary radiator 5, frame 2 and supporting member 6). On the other hand, the actuator 30 is mounted on the support member 6 at a position closer to the lower part than the front surface of the main reflecting mirror 3.

【0022】このアクチュエータ30は、詳細を図3に示
したようにモーター31と、モーター31の回転を所望に減
速する減速ボックス32と、減速された回転軸33の一方の
端部に固着した被駆動部材、即ちクランクレバー35と
で、構成されている。
As shown in detail in FIG. 3, the actuator 30 includes a motor 31, a deceleration box 32 for decelerating the rotation of the motor 31 as desired, and a driven shaft fixed to one end of a decelerated rotation shaft 33. It is composed of a driving member, that is, a crank lever 35.

【0023】そして、主反射鏡3の前面部のシートレー
ドーム20の所望の個所に、引張コイルばね40の一端を繋
着し、クランクレバー35の先端部に引張コイルばね40の
他端を繋着している。
Then, one end of the tension coil spring 40 is connected to a desired position of the seat radome 20 on the front surface of the main reflecting mirror 3, and the other end of the tension coil spring 40 is connected to the tip of the crank lever 35. is doing.

【0024】このアクチュエータ30のモーター31は、図
示省略したセンサが降雪を検知すると駆動し、降雪が終
わると自動的に停止するうよなっている。一方、25は、
シートレードーム20の集端部21に使用する、金属等より
なるリングである。
The motor 31 of the actuator 30 is driven when a sensor (not shown) detects snowfall, and automatically stops when snowfall ends. On the other hand, 25 is
A ring made of metal or the like used for the collecting end 21 of the sea trade 20.

【0025】リング25には詳細を図4に図示したよう
に、等分した位置に、多数のコイルばね26のそれぞれの
端部を繋着している。そして、アンテナ全体を覆うたシ
ートレードーム20の周縁をこのリング25の周囲に引張寄
せて、集端部21の周縁部にそれぞれのコイルばね26の他
端を繋着している。
As shown in detail in FIG. 4, the ring 25 is connected to the ends of a large number of coil springs 26 at equally divided positions. Then, the peripheral edge of the seat radome 20 covering the entire antenna is pulled around the ring 25, and the other ends of the coil springs 26 are connected to the peripheral edge of the collecting end portion 21.

【0026】上述のようにシートレードーム20が張設さ
れているので、アクチュエータ30が駆動すると、クラン
クレバー35が回転しこれに連動して、引張コイルばね40
が繋着したシートレードーム部分が変移し直線往復運動
を行う。
Since the seat radome 20 is stretched as described above, when the actuator 30 is driven, the crank lever 35 rotates and in conjunction with this, the tension coil spring 40
The seat radome part that is attached moves to make a linear reciprocating motion.

【0027】この際シートレードーム20の集端部21には
コイルばね26があり、且つ支持部材6の先端部にローラ
29を装着しているので、主反射鏡3の前面に対応するシ
ートレードームの全面がこの繋着部を中心にして、大き
い振幅で横振動を行う。したがって、表面の雪が振るい
落とされる。
At this time, a coil spring 26 is provided at the collecting end 21 of the seat radome 20, and a roller is provided at the tip of the supporting member 6.
Since 29 is attached, the entire surface of the seat radome corresponding to the front surface of the main reflecting mirror 3 vibrates laterally with a large amplitude around this joint. Therefore, the snow on the surface is shaken off.

【0028】なお、モーター軸にピニオンギアを装着
し、このピニオンギアに噛合し往復運動するラックを設
け、ラックの先端部に引張コイルばね40を繋着して、シ
ートレードーム20に振動を付与するようにしても良い。
A pinion gear is attached to the motor shaft, and a rack that meshes with the pinion gear and reciprocates is provided. A tension coil spring 40 is attached to the tip of the rack to impart vibration to the seat radome 20. You may do it.

【0029】[0029]

【発明の効果】以上説明したように本発明は、アンテナ
全体にシートレードームを被せ張設し、アクチュエータ
を用いて、シートレードームを振動させて、シートレー
ドームの表面の雪を振るい落とすという着雪防止手段で
あって、電力消費量が少なくて着雪防止費用が安いばか
りでなく、構造が簡単で設備費が低コストであるとい
う、優れた効果を有する。
As described above, according to the present invention, the seat radome is stretched over the entire antenna and the actuator is used to vibrate the seat radome to shake off the snow on the surface of the seat radome. As a measure, it has an excellent effect that not only the power consumption is low and the snow accretion prevention cost is low, but also the structure is simple and the equipment cost is low.

【図面の簡単な説明】[Brief description of drawings]

【図1】 本発明方法の原理を示す図FIG. 1 is a diagram showing the principle of the method of the present invention.

【図2】 本発明の実施例の断面図FIG. 2 is a sectional view of an embodiment of the present invention.

【図3】 本発明の要所の断面図FIG. 3 is a cross-sectional view of the essential points of the present invention.

【図4】 シートレードームの集端部の斜視図FIG. 4 is a perspective view of the collecting end of the sea trade.

【図5】 従来例の断面図FIG. 5 is a sectional view of a conventional example.

【符号の説明】[Explanation of symbols]

1 基柱 2 フレー
ム 3 主反射鏡 4 副反射
鏡 5 一次放射器 6 支持部
材 10,20 シートレードーム 15 温風発
生器 21 集端部 22,26 コ
イルばね 25 リング 29 ローラ 30 アクチュエータ 31 モータ
ー 32 減速ボックス 35 クラン
クレバー 40 引張コイルばね
1 Base Column 2 Frame 3 Main Reflector 4 Sub Reflector 5 Primary Radiator 6 Supporting Member 10,20 Sea Tradeome 15 Hot Air Generator 21 Collecting End 22,26 Coil Spring 25 Ring 29 Roller 30 Actuator 31 Motor 32 Reduction Box 35 Crank lever 40 Tension coil spring

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 アンテナ全体にシートレードーム(20)を
被せ張設し、 該アンテナに取着したアクチュエータ(30)を用いて、主
反射鏡(3) の前面部の該シートレードーム(20)部分に振
動を付与して、該シートレードーム(20)の表面の積雪を
振るい落とすことを特徴とするリフレクタアンテナの着
雪防止方法。
1. A seat radome (20) is stretched over the entire antenna, and an actuator (30) attached to the antenna is used to form the seat radome (20) portion on the front surface of the main reflecting mirror (3). A method for preventing snow accretion on a reflector antenna, characterized by applying vibration to the surface of the seat radome (20) to shake off snow.
【請求項2】 アンテナ全体を覆い張設され、シートの
集端部(21)が複数のコイルばね(26)を介してリング(25)
に連結してなるシートレードーム(20)と、 主反射鏡(3) の前面を外れた所望の位置に搭載され、被
駆動部材が往復直線運動又は回転運動するアクチュエー
タ(30)と、 該主反射鏡(3) の前面部のシートレードーム(20)の所望
の個所と該アクチュエータ(30)の被駆動部材間を繋ぐ連
結部材とを、備えたことを特徴とするリフレクタアンテ
ナの着雪防止構造。
2. A ring (25) which is stretched to cover the entire antenna and has a sheet collecting end (21) via a plurality of coil springs (26).
A seat radome (20) connected to the main reflecting mirror (3), an actuator (30) mounted at a desired position outside the front surface of the main reflecting mirror (3), in which a driven member reciprocates linearly or rotationally, and the main reflecting A structure for preventing snow accretion of a reflector antenna, comprising: a desired position of a seat radome (20) on a front surface of a mirror (3) and a connecting member for connecting a driven member of the actuator (30).
JP3337399A 1991-12-20 1991-12-20 Method and structure for preventing snow deposition on reflector antenna Withdrawn JPH05175715A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3337399A JPH05175715A (en) 1991-12-20 1991-12-20 Method and structure for preventing snow deposition on reflector antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3337399A JPH05175715A (en) 1991-12-20 1991-12-20 Method and structure for preventing snow deposition on reflector antenna

Publications (1)

Publication Number Publication Date
JPH05175715A true JPH05175715A (en) 1993-07-13

Family

ID=18308268

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3337399A Withdrawn JPH05175715A (en) 1991-12-20 1991-12-20 Method and structure for preventing snow deposition on reflector antenna

Country Status (1)

Country Link
JP (1) JPH05175715A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5729241A (en) * 1996-05-28 1998-03-17 Ergen; Charles W. Direct broadcast satellite antenna cover
US6917326B1 (en) 2004-09-29 2005-07-12 Siemens Milltronics Process Instruments Vibratory cleaning mechanism for an antenna in a time-of-flight based level measurement system
DE102008030976A1 (en) * 2008-06-30 2010-03-04 Siemens Aktiengesellschaft Antenna for use in parabolic antenna, has transmitter or receiver unit having emitting surface area and exciter element which is connected with transmitter or receiver unit for laminar mechanical excitation of transmitter or receiver unit
WO2010083453A1 (en) * 2009-01-15 2010-07-22 Walton Enterprises. Inc. Apparatus and method for clearing water from dish antenna covers

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5729241A (en) * 1996-05-28 1998-03-17 Ergen; Charles W. Direct broadcast satellite antenna cover
US6917326B1 (en) 2004-09-29 2005-07-12 Siemens Milltronics Process Instruments Vibratory cleaning mechanism for an antenna in a time-of-flight based level measurement system
EP1643221A1 (en) * 2004-09-29 2006-04-05 Siemens Milltronics Process Instruments Inc. Vibratory cleaning mechanism for an antenna in a time-of-flight based level measurement system
DE102008030976A1 (en) * 2008-06-30 2010-03-04 Siemens Aktiengesellschaft Antenna for use in parabolic antenna, has transmitter or receiver unit having emitting surface area and exciter element which is connected with transmitter or receiver unit for laminar mechanical excitation of transmitter or receiver unit
WO2010083453A1 (en) * 2009-01-15 2010-07-22 Walton Enterprises. Inc. Apparatus and method for clearing water from dish antenna covers
US8659490B2 (en) 2009-01-15 2014-02-25 William D. Walton Apparatus and method for clearing water from dish antenna covers

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Effective date: 19990311