Patent ID: 8118999

Claim:
A pool filter capable of operating in a normal mode and in a backwash mode, comprising: a. a filter container having a hollow interior and a bottom; b. said hollow interior being configured to receive a volume of filter media; c. a plurality of intake inlets located within said hollow interior proximate said bottom; d. wherein when said pool filter is operating in said normal mode and when said volume of filter media is in position, said plurality of intake inlets draw in water through said filter media; e. a plurality of exit jets located within said hollow interior proximate said bottom; f. wherein when said pool filter is operating in said backwash mode, said plurality of exit jets expel water upward through said filter media; g. wherein each of said plurality of exit jets is tilted off of vertical such that said plurality of exit jets acting in unison, when said pool filter is operating in said backwash mode, create a swirling flow within said hollow interior and i. the filter container comprising a plurality of laterals, the surface of said laterals containing said inlets and connecting to said exit jets separately from said inlets.