Gas separation: processes – With control responsive to sensed condition – Pressure sensed
Patent
1994-02-15
1995-08-08
Chiesa, Richard L.
Gas separation: processes
With control responsive to sensed condition
Pressure sensed
553851, 554591, 95271, 271260, B01D 4512
Patent
active
054395062
ABSTRACT:
In a check processing apparatus, a technique for separating multiple checks from single like items, these transported along a track wherein the checks are first subjected to twin opposed vacuums to separate them; their state (whether single or multiple) is then determined by measuring and analyzing the resulting pressure differentials within the vacuum-generating system; which is, in turn, provided with a cyclonic filter/suction pump for removing and storing dust and debris entrained within the vacuum-forming air flow, this cyclonic pump providing a constant vacuum-airflow regardless of the nature or quantity of debris removed and collected; the system being also provided with pressure sensor(s) to indicate whether (single or multiple checks are passing, plus a fail-safe unit to warn of vacuum failure. A pressure sensing unit is further provided with a variable damping stage to mask-out minor, insignificant pressure fluctuations.
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Chen Zhongtai
Keller Randy C.
Shell Ronald G.
Spall J. Michael
Chiesa Richard L.
McCormack John J.
Starr Mark T.
Unisys Corporation
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