Flow-through washing and scrubbing brush handle

An improved flow-through washing and scrubbing brush handle, comprising:

• an elongated hollow outer tube having a coupling structured for connecting a first end of said outer tube to a pressurized water supply;
• an elongated rigid hollow inner tube mounted for slidable rotational and longitudinal movement within said outer tube, a first end of said inner tube extendable beyond a second end of said outer tube and connectable to a flow-through type brush head;
• an elongated twist-lock body having a central longitudinal water passage therethrough, a first portion of said twist-lock body connected within a second end of said inner tube positioned within said outer tube;
• said twist-lock body having a first sealing ring around the end of said first portion thereof for preventing water passing into said inner tube through said water passage from passing out of said inner tube second end;
• a second sealing ring positioned transversely around an end of a second portion of said twist-lock body extending into said outer tube beyond said inner tube second end, said second sealing ring structured for preventing pressurized water entering said outer tube first end from passing between said inner and outer tubes;
• said twist lock body second portion having an eccentric cam segment;
• a locking collar loosely positioned transversely around said eccentric cam segment;
• said locking collar having a generally C-shaped, eccentric construction that includes a pair of circumferentially spaced opposing ends having a first predetermined thickness, and wherein said locking collar gradually thickens, in a radial direction, until it reaches a second predetermined thickness at a preselected point between said opposing ends, said second predetermined thickness being greater than said first predetermined thickness;
• a longitudinally extending protrusion formed on said eccentric cam segment;
• said locking collar having a circumferentially extending recess formed therein, said recess forming a pair of stop surfaces that are circumferentially spaced further apart from one another than said opposing ends of said locking collar;
• said locking collar being wedged against said outer tube when said outer tube is rotated in a first direction;
• said locking collar being continuously rotatable with respect to said outer tube when said outer tube is rotated in a second direction opposite to said first direction;
• and
• a stop surface of said locking collar abutting said longitudinally extending protrusion when said outer tube is rotated in said second direction;
• said inner and outer tubes locking together when relatively rotated in said first direction and freewheeling in an unlocked configuration when said inner and outer tubes are rotated with respect to one another in said direction opposite to said first direction.