Static structures (e.g. – buildings) – Specified terranean relationship – Open top – embedded container – tank – or reservoir
Patent
1996-02-02
1998-02-03
Safavi, Michael
Static structures (e.g., buildings)
Specified terranean relationship
Open top, embedded container, tank, or reservoir
4506, 527414, B04H 414
Patent
active
057131643
ABSTRACT:
The installation of a vinyl liner within an in-ground swimming pool is carried out using a direct drive, over-hung vacuum machine to exhaust air from between the liner and the steel walls and cement bowl within which the liner is installed. The vacuum machine has the overhung impellor located within a volute chamber isolated from the driving electric motor, so that the induced air flow is segregated from the driving motor. The vacuum machine impellor is of non-corrosive material, to avoid corrosion of the impellor when water is entrained, and to avoid the consequent imbalance and undue wear of the bearing that would otherweise ensue. The paddle-style impellor blades ensure that the vacuum suction is insufficient to cause intake of the pool liner into the air-evacuation hose.
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Eggins D. W.
Safavi Michael
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