Patent ID: 7665171

Claim:
A fluid operated wash brush comprising: a casing having a top cover with a downward facing opening, the casing including a liquid inlet for connection to a wash liquid supply; a rotary wash brush; a mounting shaft supported by the casing for relative rotation, the rotary wash brush being carried by the mounting shaft adjacent the downward facing opening in the top cover; an impeller configured to turn in response to wash liquid discharging into the casing through the fluid inlet, the impeller being operably coupled to the mounting shaft by a reducing gear train, the wash liquid exiting the casing through the downward facing opening in the top cover; and a separate spring latching mechanism connected to an exposed distal end of the mounting shaft for releasable engagement and disengagement with the rotary wash brush, the spring latching mechanism comprising a plurality of prongs that extend inward away from a distal end of the shaft along a surface of the shaft with each prong being aligned with a separate corresponding groove in the shaft.