# US 6,294,084 B1 · Electric powered automatic swimming pool cleaning system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 6,294,084 B1 - Document ID: US6294084B1 - Status: Granted - Kind: B1 - Application number: 09/440,109 - Filed: 1999-11-15 - Granted: 2001-09-25 - Earliest claimed: 1997-12-25 - Inventors: Melvyn L. Henkin; Jordan M. Laby - Web page: https://patentgrep.com/patent/US6294084B1 ## CPC - E04H 4/1654: {Self-propelled cleaners} - E04H: BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL (foundations E02D) ## Abstract A system for automatically cleaning swimming pools includes a unitary body having a level control subsystem for selectively moving the body to a position either proximate to the surface of the water pool or proximate to the interior surface of the containment wall, a propulsion subsystem operable to selectively propel the body in either a forward or rearward direction, and a cleaning subsystem operable in either a water surface cleaning mode for skimming or scooping or a wall surface cleaning mode for vacuuming or sweeping. The subsystems are powered by an electric source such as solar cells and/or rechargeable batteries and/or a wire extending to the unitary body from an external power source. The batteries can be charged from solar cells carried by the unitary body or via electric terminals in an appropriately configured docking station. ## Claims ### Claim 1 Apparatus for use with a containment wall having bottom and side portions containing a pool of water having a water pool surface, for cleaning the surface of said wall, said apparatus comprising: a unitary body capable of floating at the surface of said water pool; a rechargeable electric power source carried by said body; a level control subsystem responsive to said power source for producing a vertical force to selectively place said body proximate to said wall surface below said water surface; at least one pool water inlet in said body; and a propulsion subsystem carried by said body and powered by said power source for selectively moving said body along a path adjacent to said wall surface for collecting pool water through said inlet from adjacent to said wall surface. ### Claim 2 (depends on 1) The apparatus of claim 1 wherein said body is lighter than water; and wherein said level control subsystem defines an active state for producing a vertical force component for holding said body proximate to said wall surface. ### Claim 3 (depends on 1) The apparatus of claim 1 further including: means for removing debris from pool water collected through said inlet. ### Claim 4 (depends on 1) The apparatus of claim 1 wherein said power source includes a solar cell mounted on said body for exposure to the sun when said body is floating at said water pool surface. ### Claim 5 (depends on 1) The apparatus of claim 1 wherein said propulsion subsystem is selectively operable to move said body along a path adjacent to said water pool surface. ### Claim 6 Apparatus for use with a containment wall having bottom and side portions containing a pool of water, for cleaning the surface of said water and the surface of said wall, said apparatus comprising: a unitary body capable of being immersed in said pool water; an electric power source; a level control subsystem carried by said body and powered by said power source for producing a vertical force to selectively place said body either (1) proximate to said water surface or (2) proximate to said wall surface below said water surface; at least one pool water inlet in said body; and a propulsion subsystem carried by said body and powered by said power source for selectively moving said body either (1) along a path adjacent to said water surface for collecting pool water through said inlet from adjacent to said water surface or (2) along a path adjacent to said wall surface for collecting pool water through said inlet from adjacent to said wall surface. ### Claim 7 (depends on 6) The apparatus of claim 6 further including an electric wire. ### Claim 8 (depends on 6) The apparatus of claim 6 further including a debris collection container for removing debris from pool water collected through said inlet. ### Claim 9 (depends on 6) The apparatus of claim 6 wherein said level control subsystem includes means for selectively modifying the buoyancy of said body. ### Claim 10 (depends on 6) The apparatus of claim 6 wherein said propulsion subsystem includes a motor; and a flow generator driven by said motor for discharging a water flow from said body to produce a force acting to propel said body in a first direction. ### Claim 11 (depends on 10) The apparatus of claim 10 wherein said propulsion subsystem includes means for selectively propelling said body in a second direction different from said first direction. ### Claim 12 (depends on 6) The apparatus of claim 6 wherein said propulsion subsystem includes a motor; and traction means carried said body and driven by said motor for engaging said wall surface to propel said body in a first direction. ### Claim 13 (depends on 12) The apparatus of claim 12 wherein said propulsion subsystem includes means for selectively propelling said body in a second direction different from said first direction. ### Claim 14 (depends on 6) The apparatus of claim 6 further including a motor driven by said power source; and a flow generator driven by said motor for collecting pool water through said inlet. ### Claim 15 Apparatus for cleaning the surface of a containment wall configured to contain a pool of water having a water pool surface, said apparatus comprising: a unitary body: a rechargeable electric power source carried by said body configured to allow recharging by a pool docking station; a control system carried by said body and powered by said power source, said control system including: a propulsion subsystem for selectively moving said body along a path adjacent to said wall surface. ### Claim 16 (depends on 15) The apparatus of claim 15 wherein said body defines a pool water inlet for collecting pool water from adjacent to said wall surface. ### Claim 17 (depends on 16) The apparatus of claim 16 further including a debris collection container for removing debris from pool water collected through said inlet. ### Claim 18 (depends on 15) The apparatus of claim 15 wherein said control system further includes a level control subsystem for producing a vertical force to selectively move said body to a position proximate to said wall surface or a position proximate to said water pool surface. ### Claim 19 (depends on 15) The apparatus of claim 15 wherein said propulsion subsystem is operable to move said body along said wall surface when said body is proximate thereto and to move said body along said water pool surface when said body is proximate thereto. ### Claim 20 (depends on 19) The apparatus of claim 19 wherein said body defines a pool water inlet for collecting pool water from said water pool surface when said body is moved along said water pool surface. ### Claim 21 (depends on 20) The apparatus of claim 20 further including a debris collection container for removing debris from pool water drawn into said inlet.