Resources Contact Us Home
Vacuum unit and a vacuum toilet system comprising such a unit

Image Number 2 for United States Patent #5754987.

A vacuum unit, intended particularly for a vacuum toilet system, includes two valves (4, 6) which can be connected to a compressed-air source, an ejector (10) which includes an inlet nozzle (10a), an outlet nozzle (10b) and a vacuum opening (10c). The ejector is connected to the first valve (4) via the inlet nozzle, and to a first vacuum-unit connection (U1), via the vacuum opening. A piston valve (16) includes a first inlet (16a), a second inlet (16b) and an outlet (16c). The first inlet connects the piston valve with the ejector outlet nozzle (10), the second inlet connects the piston valve with the second valve (6), and the outlet connects the piston valve with a second vacuum-unit connection (U2). A check valve (17) is mounted between the piston valve outlet (16c) and the second vacuum-unit connection (U2). A passageway connects the second valve (6) and the second inlet (16b) of the piston valve with a further ejector inlet (10d). The further ejector inlet (10d) is directed generally at right angles to the ejector inlet nozzle (10a) and the rejector outlet nozzle (10b). The valves (4, 6) can be connected to one and the same source of compressed air via a common inlet.

  Recently Added Patents
Functional component compensation reconfiguration system and method
Document-related representative information
Method and apparatus for performing real time anomaly detection
Magnetic element with top shield coupled side shield lamination
Automated security analysis for federated relationship
Buried object detection in GPR images
Routing of data including multimedia between electronic devices
  Randomly Featured Patents
Image processing method and apparatus to select a data compression method according to a size of an output image
Programmable logic devices with enhanced multiplexing capabilities
Spatial light modulator employing voltage gradient pixels, and associated methods
Modified bituminous composition for roof membranes
Method and system for process upgrade
Method and apparatus for current and voltage control of an oscillator
Horological instrument
Timing recovery system
BIST to provide phase interpolator data and associated methods of operation
Acceleration pump with temperature-responsive control of delivery