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Apparatus for measuring surface particulate contamination

United States Patent

May 7, 2002
View the Complete Patent at the US Patent & Trademark Office
An apparatus for measuring surface particulate contamination includes a tool for collecting a contamination sample from a target surface, a mask having an opening of known area formed therein for defining the target surface, and a flexible connector connecting the tool to the mask. The tool includes a body portion having a large diameter section defining a surface and a small diameter section extending from the large diameter section. A particulate collector is removably mounted on the surface of the large diameter section for collecting the contaminants. The tool further includes a spindle extending from the small diameter section and a spool slidingly mounted on the spindle. A spring is disposed between the small diameter section and the spool for biasing the spool away from the small diameter section. An indicator is provided on the spindle so as to be revealed when the spool is pressed downward to compress the spring.
Woodmansee; Donald E. (Simpsonville, SC)
General Electric Company (Schenectady, NY)
09/ 670,452
September 26, 2000
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH & DEVELOPMENT The U.S. Government may have certain rights in this invention pursuant to contract number DE-FC21-95-MC31176 awarded by the Department of Energy.