Fluid handling – Flow affected by fluid contact – energy field or coanda effect – Means to regulate or vary operation of device
Reexamination Certificate
2006-11-07
2006-11-07
Chambers, A. Michael (Department: 3753)
Fluid handling
Flow affected by fluid contact, energy field or coanda effect
Means to regulate or vary operation of device
C137S341000, C137S549000, C137S883000, C137S884000, C251S129150
Reexamination Certificate
active
07131461
ABSTRACT:
An improved double block and double bleed stream switching system (modifiable to, for example, a double block, single bleed stream switching system) includes a common stream path for a multitude of gas streams from, for example, a process pipeline. The improved stream switching system includes a heating mechanism and insulation oven to help temperature stabilization, along with a structure to separate temperature sensitive solenoids from the heated area. Pre-heat coils are located between the sample switching system and the sample shut off system to warm the gas sample and to act as a flow restrictor. A first embodiment is suited for the Division1environment and a second embodiment is suited for Division2uses. The improved stream switching system may also feature membrane or cartridge filters located upstream of the sample wetted portion of the stream switching system.
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Lechner-Fish Teresa
Xu Yang
Chambers A. Michael
Conley Rose PC
Daniel Industries Inc.
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