Coating implements with material supply – Separate feed from plural supply means to tool or to work – Selective feed
Patent
1989-05-08
1991-05-28
Johnson, Richard J.
Coating implements with material supply
Separate feed from plural supply means to tool or to work
Selective feed
15 98, 15 17, 134 21, 134 3, 134167R, E04H 320, B08B 504
Patent
active
050188909
ABSTRACT:
A portable pool cleaning system for cleaning the surfaces of swimming pools and surrounding decks without draining the pool water. The system includes a cart for containing an electrically powered pump, a line to an external source of muriatic acid or another suitable swimming pool cleaning agent and a line to a clean water source. The system also includes a cleaning wand having a cleaning head for engagement with the pool walls and floor. A valving system is used to regulate the flow of a cleaning agent through the system, to dilute the muriatic acid with water from the clean water source, and to recirculate through the system any unused portion of muriatic acid which is prevented from flowing to the cleaning wand. The valving system further allows the operator to flush the system with clean water before withdrawing the cleaning wand from the pool water. A cylindrical safety shield is provided for each valve in case of leakage in order to prevent serious damage to system elements, objects external to the system, and persons within the pool vicinity. Switches wired in series with the pump switch are closed only when the safety shields are in place, thus preventing use of the cleaning system without this safety feature.
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Johnson Richard J.
North Broadway Corp.
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