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Sir William Preece, chief engineer, British Post Office ; 1878
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| Number | Title | Issue Date |
| 7210420 | Floating drive on boat docking apparatus An improved floating boat lift incorporates a passive hydraulic pivoting lift mechanism, onto which a boat can be driven and positioned ready for storage using only the motive power of the boat itself. The passive hydraulic pivoting lift mechanism provides mechanica... | 05/01/2007 |
| 6338594 | Movable barrier wall A movable barrier wall system includes a housing assembly 12 that has an interior chamber 32. A barrier member 14 is made of a buoyant material having a selected density. The barrier member 14 floats vertically within the chamber 32 when a liquid is prese... | 01/15/2002 |
| 4405458 | Continuous flow, variable capacity self-compensating floating weir The floating weir is a device for regulating or maintaining continuous flow from the surface level of a liquid body. As designed, the device provides a continuous, uninterrupted weir edge for controlling liquid flow. The device is particularly suited for ... | 09/20/1983 |
| 4242009 | Apparatus for automatically and selectively discharging saline water An apparatus for automatically and selectively discharging saline water at a tide-preventing floodgate between the ocean and a river or like which comprises a tide-preventing floodgate provided between the ocean and a river or the like, a drainpipe for di... | 12/30/1980 |
| 4027487 | Method for adjusting an automatic sluice with a view to ensuring a determined level Method for adjusting an automatic sluice for it to ensure a constant upstm level at a determined level mark above or below its axis of oscillation, consisting in inserting a certain quantity of water into the float, effecting normally the balancing of th... | 06/07/1977 |
