Abstract: A vacuum toilet system having means to diminish stains generated on a lower surface of a shroud when flush is operated with lid closed. The toilet system is structured to make air flow easier into the bowl when lid is closed. The lid is provided with mesh, slit, or air scoop style openings. The system also provides a structure in which flush operation is triggered by detecting a predetermined inclining angle of the lid before it closes. Another aspect is that the lower surface of the shroud is curved for keeping shroud away from the upper surface around the bowl's rim. Another aspect is that the height of the shroud stays extending from the shroud's lower surface is higher compared to the prior art. The system also provides protrusions projecting upward from the bowl's upper surface opposite the shroud stays in a wavy configuration around the bowl's rim.

Abstract: A vacuum toilet system having means to diminish stains generated on a lower surface of a shroud when flush is operated with lid closed. The toilet system is structured to make air flow easier into the bowl when lid is closed. The lid is provided with mesh, slit, or air scoop style openings The system also provides a structure in which flush operation is triggered by detecting a predetermined inclining angle of the lid before it closes. Another aspect is that the lower surface of the shroud is curved for keeping shroud away from the of the upper surface around the bowl's rim. Another aspect is that the height of the shroud stays extending from the shroud's lower surface is higher compared to the prior art. The system also provides protrusions projecting upward from the bowl's upper surface opposite the shroud stays in a wavy configuration around the bowl's rim.

Abstract: A pressure sensor, having a simple structure for accurately measuring any one of pressure and weight, is provided. The pressure sensor includes a pair of electrode layers and a dielectric layer. The dielectric layer is composed of a rubber elastic body positioned between the pair of electrode layers to act as a spacer for the pair of electrode layers. The dielectric layer has a tan .delta., at 1 to 30 Hz at a temperature of 10.degree. C. to 30.degree. C., of 0.03 or less. The dielectric layer also has a rubber hardness of 20 to 80 degrees in terms of scale A according to JIS-K-6301 at 10.degree. C. to 30.degree. C. Further, the dielectric layer has an impact resilience of 75% or more measured according to JIS-K-6301 at 10.degree. C. to 30.degree. C. and a compression set of 3% or less measured according to JIS-K-6301 at 10.degree. C. to 30.degree. C. The dielectric layer is formed of any one of natural rubber, polybutadiene rubber, polyisoprene rubber, polyurethane rubber and silicone rubber.