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    • 7. 发明专利
    • CIRCUIT BREAKER
    • JPH09261870A
    • 1997-10-03
    • JP10311096
    • 1996-03-22
    • OGAWA YOSHIHIRO
    • OGAWA YOSHIHIRO
    • H01H83/02H02J3/14
    • PROBLEM TO BE SOLVED: To prevent an operation under the overload condition by automatically closing a particular branch circuit when a current flowing into a circuit breaker is less than the operating current level or opening the circuit when the current is larger than the operating current level. SOLUTION: A control circuit 8 receives a signal from a current circuit 7 and compares a current flowing into a circuit breaker with an operating current to send an on or off signal to a switch 5. When a current less than the operating current level is flowing into the circuit breaker, the control circuit 8 sends an in signal to the switch 5 and also sends an off signal thereto when a current larger than the operating current level is flowing. The control circuit 8 also stores, as the particular branch circuit current, a sufference between the currents flowing into the circuit breaker immediately before and after the particular branch circuit opens. When the sum of the current flowing into the circuit breaker and a current of the particular branching circuit being stored exceeds the operating current level, the control circuit 8 does nor send an on signal. As a result, the operation under the overload condition can be prevented.
    • 8. 发明专利
    • CORNICE PREVENTION DEVICE
    • JP2002147061A
    • 2002-05-22
    • JP2000350645
    • 2000-11-17
    • OGAWA SHIGEOOGAWA YOSHIHIRO
    • OGAWA SHIGEOOGAWA YOSHIHIRO
    • E21F17/00E04D13/00E04H9/16
    • PROBLEM TO BE SOLVED: To provide a cornice prevention device with high practicability and workability capable of installing a cornice prevention body in an optimal state by easily installing a support body on a waterproof sheet, an inclined installation place, etc. SOLUTION: This cornice prevention device is installed in parts having cornice formed by snowfall such as an upper edge 2 of a building 1 and the upper edge of an opening part of a tunnel and constituted of the grid-, net-, or plate- shaped cornice prevention body 3 and a support body 4 supporting the cornice prevention body 3 in an erected state. The support body 4 comprises a mounting body 6 mounted on a mount portion 5 such as a roof floor of the building 1 and the upper surface of the opening part of the tunnel and a support part 7 positioned in the upper part of the mounting body for supporting the cornice prevention body 3. The mounting body 6 has a plurality of divided mount bodies 8 vertically slidably and adjustably connected to one another in an aligned state.
    • 10. 发明专利
    • Liquid purifying treatment method
    • JP2004329988A
    • 2004-11-25
    • JP2003125480
    • 2003-04-30
    • Ogawa YoshihiroKazutoshi Sakuta和利 作田小河 祥浩
    • SAKUTA KAZUTOSHI
    • C02F1/24B01J19/12C02F1/32C02F1/50C02F1/78C10G27/14C10G32/00C10G32/04
    • PROBLEM TO BE SOLVED: To effectively remove the problem that impurities or unnecessary substances dissolved in a liquid to be treated are not removed in conventional purifying treatment using ozone.
      SOLUTION: In a liquid purifying method using ozone, a required amount of the liquid to be treated is housed in a treatment tank having an ultraviolet lamp arranged therein and a mixed gas of ozone and air is successively supplied in a state of fine air bubble groups from the bottom part of the treatment tank for the purpose of aeration to be brought into contact with the liquid to be treated under stirring. The successively supplied fine air bubble groups are irradiate with ultraviolet rays to successively form nascent oxygen and active oxygen produced from ozone contained in the fine air bubble groups. Impurities are oxidized, reduced and sterilized or bonded to be removed by the repeated contact of successively formed nascent oxygen and active oxygen with the stirred liquid to be treated. By this method, the liquid to be treated is successively aerated by the ozone-containing fine air bubble groups and stirred in the treatment tank, the fine air bubble groups are irradiated with ultraviolet rays from the ultraviolet lamp to efficiently form active oxygen and the like from ozone of the fine air bubble groups and impurities are reacted with active oxygen and the like to be separated and removed.
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