Reading apparatus for thermolumines-cent type radiation dosimeters

Claim 1

APPARATUS OF READING RADIATION DOSIMETERS OF THE THERMOLUMINESCENT TYPE COMPRISING MEANS DEFINING A CHAMBER, A LIGHT SENSOR DISPOSED TO SENSE LIGHT EMITTED FROM SAID CHAMBER, TWO SETS OF ELECTRICAL CONTACTS DISPOSED IN SPACED RELATION IN SAID CHAMBER, EACH SET OF CONTACTS INCLUDING A PAIR OF JUXTAPOSED CONTACT ELEMENTS DISPOSED IN FACE TO FACE RELATION, MEANS TO CONNECT EACH SET OF CONTACTS TO AN ELECTRICAL CIRCUIT CAPABLE OF CARRYING A HIGH AMPERAGE ELECTRICAL CURRRENT, MEANS TO INTRODCE A RESISTANCE ELEMENT ADAPTED TO CARRY THERMOLUMINESCENT MATERIAL INTO SAID CHAMBER FOR CONNECTION TO SAID SETS OF ELECTRICAL CONTACTS TO COMPLETE AN ELECTRICAL CIRCUIT BETWEEN SAID CONTACTS COMPRISING A CARRIER ELEMENT HAVING A PORTION ADAPTED TO BE MOVED INTO AND OUT OF SAID CHAMBER, SAID PORTION INCLUDING MEANS TO RECEIVE IN CARRYING RELATION SAID RESISTANCE ELEMENT, SAID PORTION BEING MOVABLE BETWEEN A FIRST POSITION EXTERNAL OF SAID CHAMBER AND A SEOCND POSITION AT WHICH SAID RESISTANCE ELEMENT IS DISPOSED IN FIRM ELECTRICAL ENGAGEMENT WITH SAID CONTACT SETS, AND MEANS COOPERATING WITH SAID CARRIER ELEMENT FOR PREVENTING EXTERNAL LIGHT FROM ENTERING SAID CHAMBER.