Radiant energy – Radiant energy generation and sources – With container for radioactive source and radiation...
Patent
1998-07-07
2000-10-17
Ham, Seungsook
Radiant energy
Radiant energy generation and sources
With container for radioactive source and radiation...
2504981, 2505061, 2504961, G21F 500, G21F 502
Patent
active
061335789
ABSTRACT:
For measuring basis weight of a moving web in the cross direction scanner of a paper-making machine, an encapsulated nuclear source of Promethium 147 is used because of its wide area of emission. To conserve space it is mounted on a vertical axis. The source in a horizontal plane parallel to the moving web from a stowed position where the source is shielded to an active position where the source emits through an aperture, through the moving web, and to a detector. The x-y array planar type detector uses four detector segments symmetrically arranged around a center and compensates for belt direction misalignment (the belt driving the cross direction scanners) by mathematically manipulating the electrical signals from each detector to eliminate the error term.
REFERENCES:
patent: 3697755 (1972-10-01), Boissevain et al.
patent: 4743755 (1988-05-01), Williams
patent: 5010766 (1991-04-01), Typpo
patent: 5233195 (1993-08-01), Hellstrom
patent: 5315124 (1994-05-01), Goss et al.
patent: 5432353 (1995-07-01), Goss
patent: 5714763 (1998-02-01), Chase et al.
patent: 5928475 (1999-07-01), Chase et al.
Ham Seungsook
Impact Systems Inc.
Patti John
Wright Jerry G.
LandOfFree
Nuclear gauge for measuring a characteristic of moving sheet mat does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Nuclear gauge for measuring a characteristic of moving sheet mat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nuclear gauge for measuring a characteristic of moving sheet mat will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-471534