公开(公告)号：US3764794A

公开(公告)日：1973-10-09

申请号：US3764794D

申请日：1972-05-05

Applicant: KING NUTRONICS CORP

Inventor： KING J ,  MYERS G

IPC: F21S8/00 ,  F21V33/00

CPC classification number: B01J3/004 ,  F21W2131/411 ,  F21Y2103/33

Abstract: A vacuum or pressure chamber having a door provided therein with a circular transparent window and a circular, tubular viewing port in front of and smaller than the window. An annular lamp encircles the tubular viewing port in front of and adjacent the window and serves to illuminate the interior of the chamber.

Abstract translation: 具有门的真空或压力室具有圆形的透明窗和在窗前方和小于窗的圆形管状观察口。 环形灯在窗口前面和邻近窗口处环绕管状观察口，并用于照明室内部。