E - Fixed Constructions – 03 – F
Patent
E - Fixed Constructions
03
F
E03F 3/00 (2006.01) E03F 1/00 (2006.01)
Patent
CA 2291664
A vacuum waste system having reduced noise levels associated therewith. The vacuum waste system includes a sanitary unit for initially receiving waste. An intermediate container is connected to the sanitary unit by a first sewer pipe and a first sewer valve. A receptacle is connected to the intermediate container by a second sewer pipe and a second sewer valve. The system also includes means for generating vacuum in the second sewer pipe, intermediate container, and first sewer pipe. Transfer of waste from the sanitary unit to the receptacle is performed in two stages. In a first stage, the first valve is opened and the second valve is closed so that vacuum transports the waste from the sanitary unit to the intermediate container. In the second stage, the first valve is closed and the second valve is opened to transfer the waste from the intermediate container through the second sewer pipe. Means are provided for adjusting the volume of the intermediate container to control the velocity of air entering through the first valve, thereby reducing noise. The volume adjusting means increase the volume of the intermediate container during the first stage so that the intermediate container holds a sufficient amount of air at approximately ambient air pressure to perform the second stage.
Evac International Oy
Kirby Eades Gale Baker
LandOfFree
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