Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2006-10-17
2006-10-17
Arbes, Carl J. (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S602100, C445S035000, C445S036000, C445S046000
Reexamination Certificate
active
07120998
ABSTRACT:
A technique for providing a grid for a gate such as utilized in gating a stream of ions or other particles in a spectrometer instrument. The grid of wires may, for example, be a so-called Bradbury-Nielson Gate that consists of a set of two electrically isolated sets of equally spaced wires that lie substantially in the same plane and alternate in potential. The method utilized to provide is to first fabricate a frame of an insulating substrate having a hole and depositing metal film patterns such that conductive portions are formed on either side of the hole. Conductive portions on either side form a series of terminating pads on the portion of the substrate closest to the hole and a bus bar. Grid wires are then formed by stretching a section of wire with desired constant tension across the hole and bonding the ends of the wire to a respective one of the pads on one side and bus bar on the other side. The method provides a rapid, inexpensive way to fabricate such modulating devices.
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Crothers C. Bronson H.
Frederick Brian G.
Jackson, III Robert H.
Kleban Peter H.
LeCursi Nicholas
Arbes Carl J.
Hamilton Brook Smith & Reynolds P.C.
Stillwater Scientific Instruments
University of Maine
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