Apparatus for controlling alignment between precision ground plates and method of controlling a desired alignment between opposing precision ground plates
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United States of America Patent
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Jan 31, 2012
Grant Date -
Apr 9, 2009
app pub date -
Oct 3, 2007
filing date -
Oct 3, 2007
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus for maintaining alignment between precision ground plates includes a first plate including a main body portion having plurality of passages. The first plate also includes a first heating device mounted to heat the main body portion to a selected temperature. A second plate including a main body portion having a plurality of passages is positioned adjacent the first plate. The second plate includes a second heating device mounted to heat the main body portion to a selected temperature. A controller operatively connected to the first and second heating devices selectively establishes a desired temperature in each of the first and second plates to facilitate a desired alignment between the plurality of passages in the first plate and the plurality of passages in the second plate.
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