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| Number | Title | Issue Date |
| 4560418 | Wheeled suction cleaners A wheeled suction cleaner with endless tracks is driven by a turbine actuated by water flowing through the cleaner. To enable the cleaner to be steered, the turbine also drives an eccentric mass which momentarily lessens the adhesion of the cleaner to the... | 12/24/1985 |
| 4550463 | Steering device for a suction cleaning appliance A suction cleaning head of the kind which is connected to a suction hose in use and lifts off a surface to move, is manually steered by means of a steering wheel at the upper end of the hose which connects to the suction connection through a swivel.... | 11/05/1985 |
| 4536908 | Suction cleaners A suction cleaner for a swimming pool is supported on a bogie with inclined supporting feet resiliently biased. The bogie is rocked by means of a turbine through which water is pulled by suction to cause the bogie and hence the cleaner to move. To cause t... | 08/27/1985 |
| 4434519 | Apparatus for cleaning submerged surfaces This invention relates to apparatus for cleaning submerged surfaces and particularly the surface of swimming pool walls and floors. The apparatus has a cleaning head comprising a shaft carrying a rotateable turbine in a housing. The apparatus has means as... | 03/06/1984 |
