Patent · US Active

Self-cleaning pre-filter for a water circulation pump

US11375698B2 · kind B2 · utility

0Cited by
5References
8Claims
0Family size

Inventor

Key dates

Filing dateMar 27, 2019
Grant dateJul 5, 2022
Priority date—
Expiry dateNov 14, 2040

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC02F2303/24
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

A water circulation pump pre-filter unit (PFU). The PFU is submerged and provides structure to camouflage the system to give a natural and aesthetic look. The PFU comprises at least two cleaning systems: (1) biological cleaning mechanism; and (2) an internal self-cleaning mechanism. Specifically, the PFU comprises several filtering surfaces that form a repository for pond debris on which fish and other aquatic creatures feed, i.e., the biological cleaning mechanism. These filtering surfaces of the PFU also provide a protective barrier that prevents large debris from entering the circulation pump. The internal self-cleaning mechanism is a spray wash water source mechanism used to clean the PFU without removing the PFU or fish from the pond or entering the water. Together these features improve the quality of the water in the pond and extend the life of a pump.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.