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:
Sep. 17, 1991
Filed:
Jun. 26, 1989
James W Hoelscher, Pullman, WA (US);
Carl D Bloomsburg, Moscow, ID (US);
International Sensor Technology, Inc., Pullman, WA (US);
Abstract
Disclosed is a radiation dosimeter reading apparatus designed to disassemble, reposition, read, and reasemble radiation dosimeter badges. The dosimeter reading apparatus includes a dosimeter badge chuck assembly which engages a dosimeter badge in an infeed dosimeter badge holder. The chuck assembly engages the dosimeter badge using a set of tamper element prongs which depress a tamper ring which forms part of the dosimeter badge. The depression of the badge tamper ring releases a locking ring which also forms part of the dosimeter badge. Once the locking ring is freed, then another set of prongs on the chuck assembly are rotated to route the locking ring of the badge and thereby release a disk-shaped dosimeter badge insert. The chuck assembly is further adapted to grasp the released insert by contracting the tamper element prongs inwardly against the perphery of the disk-shaped insert to hold the inset on the chuck assembly. The chuck assembly then is carried with the removed badge insert on a chuck positioning mechanism which places inside of the dosimeter insert adjacent to a laser reading arrangement which stimulates the dosimeters with a laser beam and measures the amount of luminescent energy stored in the dosimeters held on the badge. After reading the badge is reassembled by inserting the disk-shaped badge insert into the remaining portions of the dosimeter badge and rotating the locking ring with the chuck assembly locking prongs thereby sealing the insert and badge case together. The invention also includes methods for assembly, disassembly and reading of dosimeter badges.