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US 4,064,440 AGranted
X-ray or gamma-ray examination device for moving objects
OwnerFrederick L. Roderinventor
Life of this patent
Estimating the term…
Abstract
This apparatus obtains information about the interior of optically opaque objects rectilinearly translated therethrough. This apparatus assures the conformity of objects to predetermined constraints for purposes of quality control, and enables content identification.
Claims12
In combination,
- means for transporting an object in a given direction at a known rate of travel along a selected rectilinear path having at least one substantially straight reference section;
- an angularly divergent fan beam source of ionizing photons;
- a plurality of photon detection means disposed in selected spaced relation and adapted to detect photons from said beam source;
- said photon source and said photon detection means being disposed in the vicinity of said reference section such that an object transported by said means for transporting passes therebetween and photons of the angularly divergent beam of said photon source impinges upon said object, said angularly divergent beam photon source and said photon detection means having a fixed orientation with respect said reference section whereby the divergent beam of said photon source is aligned with the direction of travel of an object within said reference section and said detection means are spaced with respect said direction of travel;
- a signal processing means,
- means connecting said detection means to said processing means,
- means for providing an output signal indicative of the mass distribution of said optically opaque object, and
- means connecting said processing means to said means, for providing an output signal.
5 more elements
A quality control tomographic examination device for the detection and location of density discontinuities in an optically opaque object moving therethrough comprising:
- means for transporting said object in a given direction at a known rate of travel along a selected rectilinear path having at least one substantially straight reference section;
- an angularly divergent fan beam source of ionizing photons;
- at least two photon detection means disposed in selected spaced relation and adapted to detect photons from said beam source;
- said photon source and said photon detection means being disposed in the vicinity of said reference section such that an object transported by said means for transporting passes therebetween and photons of the angularly divergent beam of said photon source impinges upon said object, said angularly divergent beam photon source and said photon detection means having a fixed orientation with respect said reference section whereby the divergent beam of said photon source is aligned with the direction of travel of an object within said reference section and said detection means are spaced with respect said direction of travel;
- signal processing means;
- means connecting said photon detection means to said signal processing means;
- output means;
- and
- means connecting said signal processing means to said output means, said signal processing means having an output representative of the time differential between signals produced in response to detection to density discontinuities in said object moving through said device at said selected rate of travel.
6 more elements
Dependencies are inferred from the claim text.