Filing Information

Inventor(s)	Jan Ostrup ·
Assignee(s)	Wallac Oy ·  View assignee updates
Attorney/Agent(s)	Fisher, Christen & Sabol ·
Primary Examiner	Alfred E. Smith ·
Assistant Examiner	Janice A. Howell ·
Application Number	US6104762
Filing date	12/18/1979
Issue date	12/01/1981
Predicted expiration date	12/18/1999
U.S. Classifications	250/328  · 250/359  ·
International Classifications	G01T 100  ·
Kind Code	A
International Classifications	250328;358 R;359;361 R ·

Abstract

Independent Claims | See all claims (3)

1. 1. In an automatic gamma counter for measuring radioactive samples contained in sample holders removably supported in elongated racks which are moved step-by-step in a longitudinally directional path past a measuring station comprising:a radiation shielded chamber disposed at said station on one side of said path, said chamber having an opening facing a sample holder positioned at said station through which sample holders are to be sequentially introduced into the chamber for measuring;a slide fabricated of radiation shielding material mounted at said station on the opposite side of said path and facing said opening for horizontal reciprocating movement perpendicular to said path between a retracted position on the side of the path opposite from said opening and a projected position in engagement with said opening;said slide having a configuration to engage with said opening in said projected position to provide a radiation shielded closure for said chamber; andtransferring and gripping means for removing a sample holder from a rack at said station when the slide is in said retracted position and for suspending the removed holder in said shielded chamber when in said projected position.