Fluid handling – Self-proportioning or correlating systems – Self-controlled branched flow systems
Reexamination Certificate
2006-04-10
2009-11-17
Lee, Kevin L (Department: 3753)
Fluid handling
Self-proportioning or correlating systems
Self-controlled branched flow systems
C137S512150, C137S512400, C137S843000, C137S605000
Reexamination Certificate
active
07617837
ABSTRACT:
The present invention presents various novel approaches to solving the problems inherent in measuring biological pressures in high pressure systems. Thus, to protect a pressure transducer exposed to fluid flows at higher pressures than its overpressure rating, a novel valve is used that closes a protected leg in which the transducer is located. The various exemplary embodiments of such valves each have a high pressure input, one or more low pressure inputs, and an output. In operation, when a high pressure fluid flow occurs at a high pressure input, such valves automatically close the low pressure inputs. Alternatively, a novel transducer system is presented, which automatically limits the effective pressure sensed by a transducer to a certain maximum.
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Duchon Douglas J.
Gabbard Mark
McPeak Thomas
Mohiuddin Khader
Wilson Robert F.
ACIST Medical Systems, Inc.
Lee Kevin L
Shumaker & Sieffert P.A.
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