Patent ID: 9670688
Date: 2017-06-06
CPC Classifications: B08B,E04H

Claim:
1. A self-propelled robotic pool cleaner for cleaning a submerged surface of a pool, comprising: a housing having a longitudinal axis and an interior chamber, a first discharge conduit having a first water jet discharge port at a first end of the housing and a second discharge conduit having a second water jet discharge port at an opposing second end of the housing, and at least one inlet port formed in a bottom surface of the housing; rotationally-mounted supports attached to the housing to permit movement of the pool cleaner over the surface of the pool being cleaned; and an electric water pump mounted within the interior chamber of the housing and having a reversibly-rotatable driveshaft with opposing ends and a pair of propellers, wherein one of the pair of propellers is mounted on each of the opposing ends of the driveshaft, the water pump being configured to simultaneously rotate the pair of propellers in a common rotational direction to draw water and debris from the pool into the housing through the at least one inlet port for filtering and discharge filtered water from the interior chamber through one of the first or second water jet discharge ports in the form of the water jet, the water jet having sufficient force to propel the pool cleaner in a direction of movement opposite to a direction in which the water jet is being discharged, the direction of movement corresponding generally to the longitudinal axis of the pool cleaner.