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TOKYO METROPOLITAN SEWERAGE SERVICE CORPORATION
Tokyo, JP
| TOKYO METROPOLITAN SEWERAGE SERVICE CORPORATION Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20110297250 | OPENING/CLOSING DEVICE - An opening/closing device includes a gate that receives a flow of a sewage, and can fall toward a downstream side of the flow, a fall prevention unit that prevents the gate from falling by supporting the gate, a support release unit that releases the support for the gate by the fall prevention unit, a first float that is arranged on the upstream side of the gate, and is smaller in specific gravity than the sewage, a surfacing prevention unit that prevents the first float from surfacing, a second float that is arranged on the upstream side of the gate, above the first float, and is smaller in specific gravity than the fluid, and a surfacing-prevention release unit that releases, resulting from surfacing of the second float, the prevention of the surfacing of the first float by the surfacing prevention unit. Further, the support release unit is activated resulting from surfacing of the first float. | 12-08-2011 |
| 20110290343 | OPENING/CLOSING DEVICE - An opening/closing device | 12-01-2011 |
| 20110284441 | VORTEX FLOW TYPE WATER SURFACE CONTROL DEVICE FOR DRAINING DEVICE - A vortex flow type water surface control device for a draining device is provided. The vortex flow type water surface control device may include an inflow pipe, an outflow pipe, an intercepting pipe, and a separating weir that is disposed to block the intercepting pipe and the inflow pipe from the outflow pipe. The vortex flow type water surface control device may also include a control plate that is disposed between an opening of the inflow pipe and an opening of the intercepting pipe. A height of the control plate may be higher than at least a height of the separating weir. The control plate may be apart from the separating weir, and may approximately extend to a center axis of the intercepting pipe. | 11-24-2011 |