The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 01, 2009
Filed:
Jun. 05, 2008
Daniel B. Mitchell, Port McNicoll, CA;
Geoffrey G. Harris, Midland, CA;
Douglas J. Brown, Midland, CA;
Daniel B. Mitchell, Port McNicoll, CA;
Geoffrey G. Harris, Midland, CA;
Douglas J. Brown, Midland, CA;
Raytheon Company, Waltham, MA (US);
Abstract
A detector calibration reference is disposed along a path of travel for radiation that extends from a radiation source to a radiation detector. The detector calibration reference has mutually exclusive first and second portions that are offset in a direction transverse to the path of travel, the first portion being substantially opaque to radiation from the source, and the second portion being substantially transmissive to radiation from the source. The detector calibration reference is moved relative to the path of travel in a manner so that the first and second portions become successively aligned with the path of travel.