Pool cleaner with filter with self cleaning means and high internal pressure

{
  "publication_number": "US10300412B2",
  "country": "US",
  "kind": "B2",
  "title": "Pool cleaner with filter with self cleaning means and high internal pressure",
  "abstract": "A pool cleaner that may include a drive mechanism for moving the pool cleaner; a housing that has a first fluid opening and a second fluid opening; a filtering unit that comprises a filter enclosure, a cleaning element and a filtering element; and a rotating mechanism that is configured to introduce a relative rotation between the cleaning element and the filtering element thereby causing the cleaning element to clean the filtering element.",
  "claims": [
    "1. A pool cleaner comprising: a drive mechanism for moving the pool cleaner; a housing that has a first fluid opening and a second fluid opening; a filtering unit that comprises a filter enclosure, a cleaning element and a filtering element; and a rotating mechanism that is configured to introduce a relative rotation between the cleaning element and the filtering element thereby causing the cleaning element to clean the filtering element.",
    "2. The pool cleaner according to claim 1 comprising a set of impeller blades that comprises at least one impeller blade; wherein the rotation of the filtering element causes the set of impeller blades to rotate thereby inducing fluid to enter through the first fluid opening.",
    "3. The pool cleaner according to claim 2 wherein the pool cleaner does not include any impeller except the set of impeller blades.",
    "4. The pool cleaner according to claim 1 wherein the filter enclosure comprises a filtering unit gear that meshes with the rotating mechanism; wherein the filtering unit gear is located in proximity to a bottom of the filter enclosure.",
    "5. The pool cleaner according to claim 1 wherein the filter enclosure comprises a filtering unit gear that meshes with the rotating mechanism; wherein the filtering unit gear is located above an upper surface of the filter enclosure.",
    "6. The pool cleaner according to claim 1 wherein the cleaning element is coupled to a movement element that is configured to rotate an interfacing portion of the cleaning element; wherein the interfacing portion is configured to interface with an inner section of the filtering element during a cleaning of the inner section of the filtering element.",
    "7. The pool cleaner according to claim 6 wherein the movement element is configured to rotate the interfacing portion of the cleaning element about an axis that is closer to a sidewall of the filtering element than to a center of the cleaning element.",
    "8. The pool cleaner according to claim 6 wherein the movement element is configured to rotate the interfacing portion of the cleaning element about an axis that is proximate to a sidewall of the filtering element.",
    "9. The pool cleaner according to claim 6 wherein the movement element is configured to rotate the interfacing portion of the cleaning element about an axis; wherein at least an upper portion of the axis is positioned above the filtering element; wherein the filtering element defines a gap that is at least partially sealed by a sealing element; wherein the axis passes through the sealing element.",
    "10. The pool cleaner according to claim 9 wherein the sealing element has an annular shape.",
    "11. The pool cleaner according to claim 6 wherein the interfacing portion is connected to an arm; wherein the interfacing portion is supported by the arm.",
    "12. The pool cleaner according to claim 6 wherein the movement element belongs to the rotating mechanism.",
    "13. The pool cleaner according to claim 6 wherein the movement element is mechanically coupled to the rotating mechanism.",
    "14. The pool cleaner according to claim 6 wherein the movement element is positioned within the filter enclosure.",
    "15. The pool cleaner according to claim 6 wherein the movement element is positioned outside the filter enclosure.",
    "16. The pool cleaner according to claim 1 wherein the cleaning element comprises a vertical portion that interfaces with a sidewall of the filtering element.",
    "17. The pool cleaner according to claim 1 wherein the cleaning element is positioned at a fixed position during a cleaning of the inner section of the filtering element.",
    "18. The pool cleaner according to claim 1 wherein the cleaning element comprises an interfacing portion for interfacing with an inner section of the filtering element, wherein the interfacing portion is coupled to a movement element that is configured to move the interfacing portion in relation to the cleaning element thereby changing a distance between the interfacing portion and the filtering element.",
    "19. The pool cleaner according to claim 1 wherein the cleaning element comprises an interfacing portion that is coupled to a movement element; wherein the movement element is configured to move the interfacing portion between a first position in which the interfacing element interfaces with an inner section of the filtering element and a second position in which the interfacing element is spaced apart from the inner section of the filtering element.",
    "20. The pool cleaner according to claim 1 that comprises multiple filtering elements and multiple cleaning elements for cleaning the multiple filtering elements, wherein the multiple filtering elements comprise the filtering element and at least one additional filtering element; wherein the multiple cleaning elements comprise the cleaning element and at least one additional cleaning element.",
    "21. The pool cleaner according to claim 20 wherein a spatial relationship between at least a pair of cleaning elements of the multiple cleaning elements remains unchanged.",
    "22. The pool cleaner according to claim 1 wherein the cleaning element comprises an arm that comprises a supporting element and an interfacing portion; wherein the interfacing portion is configured to interface the inner section of the filtering element when cleaning the filtering element.",
    "23. The pool cleaner according to claim 1 wherein the cleaning element comprises a rod and alternating fins that are connected to the rod; wherein the rod is configured to rotate about a longitudinal axis of the rod when cleaning the filtering element.",
    "24. The pool cleaner according to claim 1 wherein the cleaning element comprises a brush that is parallel to a sidewall of the filtering element.",
    "25. The pool cleaner according to claim 1 wherein the cleaning element comprises a brush that is oriented in relation to a sidewall of the filtering element.",
    "26. The pool cleaner according to claim 1 wherein the cleaning element comprises a brush that is configured to interface with a sidewall and a bottom of the filtering element.",
    "27. The pool cleaner according to claim 1 wherein the filtering unit is radially symmetrical and wherein the first fluid opening is positioned at a center of the filtering unit.",
    "28. The pool cleaner according to claim 1 comprising a hydraulic system that is configured to direct fluid from the first fluid opening towards the second fluid opening; wherein the rotating mechanism and the hydraulic system share a motor.",
    "29. The pool cleaner according to claim 1, wherein the cleaning element comprises a cleaning element core and an interfacing portion that extends from the cleaning element core and interfaces with the filtering element; wherein the cleaning element core comprises multiple cleaning element core apertures; wherein the filtering element is configured to filter fluid that enters via the first fluid opening, passes through the multiple cleaning element core apertures and exits through the second fluid opening; and wherein the rotating mechanism is configured to rotate the cleaning element core.",
    "30. The pool cleaner according to claim 29 wherein the rotating mechanism is configured to simultaneously rotate the filtering element and the cleaning element core.",
    "31. The pool cleaner according to claim 29 wherein the rotating mechanism is configured to rotate the filtering element and the cleaning element core in a mutual independent manner.",
    "32. The pool cleaner according to claim 29 wherein the interfacing portion comprises multiple bristles.",
    "33. The pool cleaner according to claim 32 wherein the multiple bristles are positioned along a spiral path.",
    "34. The pool cleaner according to claim 29 wherein the interfacing portion comprises a continuous spiral element.",
    "35. The pool cleaner according to claim 29 wherein the interfacing portion comprises a non-continuous spiral element."
  ],
  "description_excerpt": "Pool Cleaners commonly comprise of an enclosed hollow body that travels on wheels or tracks on the relative horizontal swimming pool surfaces; at least one brush to sweep the surfaces; at least two motors one of which drives the body on floor or walls; a pump motor that is positioned in a hydraulic system that draws water and debris from a bottom inlet opening in the said body where the said inlet is near or close to the travelled surfaces; said liquid passes through a filtering media and is subsequently ejected from the body from an upper positioned outlet opening. The drawing through the bottom end of the body and the expelling of the water at the top end creates a negative pressure force at the bottom end to maintain the vehicle in contact with the underwater surface. Such a hydraulic system makes use of the suction port at the lower end of the body that also forms a negative pressure inside the body of the pool cleaner also called a vacuum pressure force. The vacuum pressure force at the bottom of the pool cleaner coupled with the downward pressure created by the ejecting water that is being created will ensure that the pool cleaner remains in close contact to the floor or walls of the swimming pool.\n\nThe art depicts and describes numerous embodiments where said impeller pump motor is positioned - in an upright position or in an angled position - having impeller blades located remotely from of the pool cleaner inlet usually at a higher region within the hydraulic system path in the hollow body.",
  "cpc": [
    "B01D 29/6415",
    "B01D 29/23",
    "B01D 29/60",
    "B01D 33/11",
    "B01D 33/461",
    "B01D 33/804",
    "B25J 11/0085",
    "B25J 5/00",
    "B25J 9/1694",
    "C02F 1/001",
    "C02F 2103/42",
    "C02F 2201/008",
    "E04H 4/1654",
    "Y10S 901/01"
  ],
  "ipc": [
    "B01D 29/23",
    "B01D 29/60",
    "B01D 29/64",
    "B01D 33/11",
    "B01D 33/46",
    "B01D 33/80",
    "B25J 11/00",
    "B25J 5/00",
    "B25J 9/16",
    "C02F 1/00",
    "C02F 103/42",
    "E04H 4/16"
  ],
  "assignees": [
    "MAYTRONICS LTD"
  ],
  "inventors": [
    "WITELSON SHAY",
    "GOLAN ODED"
  ],
  "filing_date": "2015-08-19",
  "publication_date": "2019-05-28",
  "grant_date": "2019-05-28",
  "priority_date": "2014-08-19",
  "application_number": "US-201514829668-A",
  "family_id": "53886972",
  "citations": [
    "FR2742351A1",
    "GB2337948A",
    "US2011000036A1",
    "US2013032527A1",
    "US2013152317A1",
    "US2014076789A1",
    "WO2014097304A1"
  ]
}