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    • 2. 发明专利
    • Effective-use system for radiation source
    • 辐射源的有效使用系统
    • JP2003006318A
    • 2003-01-10
    • JP2001187849
    • 2001-06-21
    • Hitachi Ltd株式会社日立製作所
    • MIZUGAKI HIROMISAWADA SHUSAKUHORIUCHI SUSUMUOTSUKI ATSUSHI
    • G21G4/00G06Q30/06G06Q50/00G06Q50/10G06F17/60
    • PROBLEM TO BE SOLVED: To make effective use of radiation source. SOLUTION: A radiation source supplier 12 who wants to transfer or lend the radiation source, a radiation source accepter 13 who wants to receive the radiation source and a radiation source application-promoting center 11 which mediates between the radiation source supplier 12 and the radiation source accepter 13 for transferring or lending the radiation source are in existence. The terminal 16 of the radiation source supplier 12, the terminal 17 of the radiation source accepter 13 and the server 14 of the radiation source application-promoting center 11 are connected with Internet 18. The radiation source application-promoting center 11 accumulates the kind and quantity of the radiation source, which the radiation source-supplier 12 has, in the server 14, computes the strength of the radiation source at present and in future, and accumulates the results of the computation in the server 14. Then, when an access is made via the Internet 18 by the radiation source accepter 13, the data accumulated in the server 14 are disclosed to the radiation source accepter 13.
    • 要解决的问题:有效利用辐射源。 解决方案:想要转移或借出辐射源的辐射源供应器12,想要接收辐射源的辐射源接收器13和辐射源应用促进中心11,其在辐射源供应器12和辐射源 存在用于转移或借出辐射源的接收器13。 辐射源供应器12的端子16,辐射源接收器13的端子17和辐射源应用促进中心11的服务器14与互联网18连接。辐射源应用促进中心11累积种类和 在服务器14中辐射源 - 供应商12具有的辐射源的数量在当前和将来计算辐射源的强度,并将计算结果累积在服务器14中。然后,当访问 通过互联网18由辐射源接收器13进行,将累积在服务器14中的数据公开到辐射源接收器13。
    • 4. 发明专利
    • ENTRANCE DEVICE OF ELEVATOR LANDING
    • JPH0632570A
    • 1994-02-08
    • JP19046792
    • 1992-07-17
    • HITACHI LTDHITACHI BUILDING SYST ENG
    • OTSUKI ATSUSHIKOMATSU TOSHIROYAMAMOTO KOJISUGAWARA JIYUNIIDA NARUAKI
    • B66B13/30
    • PURPOSE:To simplify adjustment of door suspension for eliminating doorstop sound and reduce noise at opening or closing a door, in an entrance device in which at least two door panels are provided so as to open at the center, by providing a cushioning stopper for reducing doorstop sound on the upper part of a door panel. CONSTITUTION:In a two door center opening type door provided on the entrance device of a landing, right and left respective doors 1, 2 are guided with door shoes 5 sliding in the threshold 4 on a landing floor at the lower ends, and suspended with hangers 6 rollingly running on the door rail 8 of a header 9 supported with a landing wall 15 at the upper ends. Both the doors 1, 2 are in cooperation with each other through a rope 16, and simultaneously opened or closed. In this case, a cushioning stopper 18 for reducing doorstop sound is fitted to the hanger 6 through a metal fitting 17, meanwhile a plate 19 is fitted to the header 9. The cushioning stopper 18 is brought in contact with the plate 9 at a few mm this side of the door closing end, the shock is absorbed until both doors are perfectly closed, and hence the doorstop sound is reduced.
    • 8. 发明专利
    • SELF-ACTUATING NUCLEAR REACTOR SHUT-OFF MECHANISM
    • JPH01155295A
    • 1989-06-19
    • JP31588687
    • 1987-12-14
    • HITACHI LTD
    • ARASHIDA GENJIITOOKA SATOSHIOTSUKI ATSUSHI
    • G21C7/12G21C9/02
    • PURPOSE:To prevent a malfunction of a mechanism, by providing a plurality of grooves through which a reactor core coolant flows, at peripheries of an armature or an electromagnet or both, to get a large difference of an electromagnetic coercive force between a normal operating condition and an abnormal one. CONSTITUTION:An armature 4 of a nuclear reactor shut-off mechanism is composed of a magnetic material having its Curie point to be the same temperature to which a sodium flow temperature rises at an abnormal operating condition, and with a phenomena which a sodium temperature at an outlet of a fuel assembly 9 in the abnormal operating condition rises and the temperature of the armature 4 reaches to the Curie point, a magnetic attraction between the armature and an electromagnet 8 is weakened. Therewith, the armature 4 is separated from the electromagnet 8 and a control rod 3 falls into a reactor core. In case that numerous grooves are provided at peripheries of not only the armature 4 but also a magnetic core 33 of the electromagnet 8, the sodium 10 touches the whole part where lines of magnetic force 17 run in the armature 4. Therefore, a thermal transfer to the armature 4 is improved and a difference in electromagnetic coercive force between a standard rate operation and an abnormal condition can be set with rather large amount of value and therewith a possibility of a malfunction is much more lessened.