Color valve multiplexer
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United States of America Patent
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Jun 7, 1994
Grant Date -
N/A
app pub date -
Nov 20, 1992
filing date -
Nov 20, 1992
priority date (Note) -
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Abstract
A coating material dispensing system comprises a hazardous area and a non-hazardous area. Multiple coating material type controls have coating material input ports, coating material output ports, and control ports for controlling the passage of a type of coating material controlled by each respective coating material type control from its input port to its output port. A controller generates control signals for controlling the multiple coating material type controls. The control signals are multiplexed in the non-hazardous area, and transmitted into the hazardous area where they are demultiplexed and provided to the coating material type controls. The demultiplexer and coating material type controls are intrinsically safe.
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