Electricity: circuit makers and breakers – Liquid contact
Reexamination Certificate
2005-04-26
2005-04-26
Friedhofer, Michael A. (Department: 2832)
Electricity: circuit makers and breakers
Liquid contact
Reexamination Certificate
active
06884951
ABSTRACT:
Fluid-based switches and methods for producing the same are disclosed. In one embodiment, a method for producing a switch comprises depositing a first alignment pad on a first substrate, depositing a second alignment pad on a second substrate with a perimeter relief surrounding the second alignment pad, depositing solder on at least one of the alignment pads, depositing a switching fluid on the first substrate, mating the first substrate to the second substrate by aligning the alignment pads and heating the solder, the substrates defining there between a cavity holding the switching fluid, the cavity being sized to allow movement of the switching fluid between first and second states to form a liquid switch, forming a perimeter ring around the liquid switch on at least one of the two substrates, depositing wettable material in the perimeter ring, depositing solder paste containing uncured epoxy on the wettable material in the perimeter ring, and reflowing the solder paste.
REFERENCES:
patent: 3955059 (1976-05-01), Graf
patent: 6646527 (2003-11-01), Dove et al.
patent: 6647165 (2003-11-01), Hu et al.
patent: 6759611 (2004-07-01), Wong et al.
Agilent Technologie,s Inc.
Friedhofer Michael A.
Mitchell Cynthia S.
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