US 12,458,911 B2
Filters principally for use in connection with swimming pools and spas
Abian van der Meijden, Midrand (CA); and Hendrikus Johannes van der Meijden, Midrand (CA)
Assigned to ZODIAC POOL SYSTEMS LLC, Carlsbad, CA (US)
Filed by Zodiac Pool Systems LLC, Carlsbad, CA (US)
Filed on Jun. 5, 2019, as Appl. No. 16/431,965.
Claims priority of provisional application 62/688,537, filed on Jun. 22, 2018.
Prior Publication US 2019/0388807 A1, Dec. 26, 2019
Int. Cl. B01D 29/01 (2006.01); C02F 1/00 (2023.01); C02F 103/42 (2006.01); E04H 4/12 (2006.01)
CPC B01D 29/016 (2013.01) [C02F 1/001 (2013.01); E04H 4/1218 (2013.01); C02F 2103/42 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method of filtering water of a swimming pool or spa comprising:
a. positioning a filter assembly in a water-circulation system or a mobile pool cleaning apparatus of the swimming pool or spa, the filter assembly comprising:
a framework comprising a plurality of framework sections, wherein adjacent framework sections of the plurality of framework sections are pivotable relative to each other such that the framework is configurable between a rolled configuration and an unrolled configuration, wherein the framework in the rolled configuration is a spiral pattern, wherein each framework section of the plurality of framework sections supports at least one panel of mesh material, wherein the framework and the mesh material together define a wall of the filter assembly, wherein, when the framework is in the rolled configuration, the framework defines an unfilled gap between and separating adjacent layers of the mesh material in a radial direction relative to the spiral pattern; and
b. causing water of the swimming pool or spa to flow on a flow path through the filter assembly with the framework in the rolled configuration, wherein:
when adjacent layers comprising the mesh material in the radial direction are unobstructed by debris, the flow path is in the radial direction through the mesh material; and
when at least one layer of the adjacent layers of the mesh material is obstructed by debris, the flow path is through the unfilled gap in a spiral direction.