Patent ID: 6453481
Filing Date: 2002-09-24
Classification: B64D,E03F,Y02T,Y10T

Abstract:
A vacuum waste system comprising:a receptacle for receiving waste, the receptacle having an outlet; a collection tank in fluid communication with the receptacle outlet; a vacuum source in fluid communication with the collection tank to produce a partial vacuum in the collection tank; a flush actuator operable to generate a flush command; a flush valve disposed between the toilet outlet and the collection tank having a normally closed position, the flush valve actuating to an open position for a flush interval in response to the flush command, thereby to control fluid communication between the collection tank and toilet outlet; and a vacuum control valve disposed between the vacuum source and the collection tank, the vacuum control valve being operable between open and closed positions thereby to control fluid communication between the collection tank and vacuum source, the vacuum control valve being operably linked to the flush valve so that the vacuum control valve is operated in the closed position during at least a portion of the flush interval.