Filter cartridge for swimming pools and spas

Details Filter cartridge for swimming pools and spas Filter cartridge for swimming pools and spas

1992-04-14

1998-09-22

Walker, W. L.

Liquid purification or separation

Structural installation

Closed circulating system

210232, 210441, 210455, 210457, 210470, 2104931, 4490, B01D 3502

Patent

active

RE0359009

ABSTRACT:
A filter cartridge is disclosed having a pleated filter element, hollow perforated core, a lower annular end cap sealed to the bottom ends of the core and filter element and an upper circular end cap sealed to the top ends of the filter element and core. A hollow threaded nipple open at both ends extends coaxially downwardly from the annular end cap, the hollow interior of the nipple being continuous with the hollow interior of the core. A handle extends upwardly from the circular end cap.

REFERENCES:
patent: 2218339 (1940-10-01), Manning
patent: 3392843 (1968-07-01), Munley
patent: 3506475 (1970-04-01), MacDonnell
patent: 3520417 (1970-07-01), Durr et al.
patent: 3867294 (1975-02-01), Pall et al.
patent: 4552658 (1985-11-01), Adock et al.
patent: 4559138 (1985-12-01), Harons, II
Replacement Swimming Pool and Spa Filter Cartridge Catalog, 13th Edition.
Star Clear II Brochure, Haywood Pool Products, 19B-83.

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