Fluid handling – Processes – Cleaning – repairing – or assembling
Reexamination Certificate
2007-04-17
2007-04-17
Chambers, A. Michael (Department: 3753)
Fluid handling
Processes
Cleaning, repairing, or assembling
C137S074000, C137S251100, C137S828000
Reexamination Certificate
active
10941216
ABSTRACT:
A freeze-thaw valve and a method of micro-machining the freeze-thaw valve is provided and includes a valve housing, wherein the valve housing defines a housing cavity and includes a housing inlet, a housing vent, a capillary tubing inlet and a capillary tubing outlet. A valve body is provided, at least a portion of which is lithographically constructed, wherein the valve body includes a refrigerant inlet, a refrigerant outlet and an expansion chamber. The expansion chamber is disposed to communicate the refrigerant inlet with the refrigerant outlet and includes a restriction region having a flow restriction. Additionally, the valve body is disposed within the housing cavity to form an insulating channel between the valve housing and the valve body.
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Caton Pamela F.
Crocker Robert W.
Gerhardt Geoff C.
Brown Rudnick Berlack & Israels LLP
Chambers A. Michael
Michaelis Brian L.
Waters Investments Ltd.
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