filled in this way debris is removed completely from the intake rather than merely brushing it from the drum into the water flow where it is immediately sucked onto the drum again the brush rotates the drum as it turns on the surface this action flicks the debris from the drum into the holding bin this action automatically removes debris as the drum is working other features of the device include a framework for placing and operating the drum and the collection system application_number US 43777099 A description referring now to fig1 the preferred embodiment of rotary self cleaning drum strainer 10 is shown fig1 also shows a system from which strainer 10 may be suspended the system aa has a skid a from which a pump b an engine c and a fuel tank d are mounted upper framework e provides a place for boom f to be mounted a chain g provides support and holds adjustable boom f at the correct angle for operation a winch h is provided on upper framework e and its cable extends over boom pulley i and to a lifting eye 12 of strainer 10 a flexible conduit j allows strainer 10 to be raised or lowered independently of the system aa the weight of the skid a pump b engine c fuel tank d and upper framework e is more than sufficient to suspend strainer 10 from boom f picking eyes k are provided on top of upper framework e in order to lift entire system aa along with screen drum 10 to a desired location a piece of equipment such as a loader or an excavator is.