Liquid purification or separation – Structural installation – Closed circulating system
Patent
1996-09-19
1997-11-11
McCarthy, Neil
Liquid purification or separation
Structural installation
Closed circulating system
210232, 210246, 150154, B65D 6508
Patent
active
056859775
ABSTRACT:
A swimming pool filter apparatus cover providing protection to a pool service technician servicing the filter apparatus, the cover forming a barrier between the technician and the filter apparatus. The filter apparatus is of the type having a central cylindrical body with upper and lower hemispherical portions, and an outwardly protruding flange base, with water inlet and outlet pipes intersecting the cylindrical body. A removable top cap which, when removed, reveals an entrance opening through the upper hemisphere. The technician extends his arm through this opening to remove contaminated sand or other filter material for replacement. The cover consists of a heavy flexible vinyl material having a rectangularly shaped main body to encircle the filter apparatus cylindrical body. This main body top peripherial edge joins a plurality of trapezoidal segments also joined together adapted to cover the upper hemispherical portion of the filter apparatus while providing a hexagonal opening for the top cap and entrance into the vessel. Further, openings for the inlet and outlet pipes are provided in the main body, which is closed with fastening materials. Alternate embodiments of the device provide for disposable type covers, and protection of the technician against threads in the filter apparatus top entrance.
REFERENCES:
patent: 3143154 (1964-08-01), Best
patent: 4811767 (1989-03-01), Kessler
patent: 4947794 (1990-08-01), Baldwin
patent: 5097678 (1992-03-01), Aubuchon
patent: 5318821 (1994-06-01), Bradley, Jr.
patent: 5511655 (1996-04-01), Porter
Brown Morris
Golston Betty Carolyn
Green Theodore M.
McCarthy Neil
McClanahan J. Michael
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