| 摘要 |
1,142,626. Opening containers. INTERNATIONAL STANDARD ELECTRIC CORP. 27 May, 1966 [3 June, 1965], No. 23914/66. Heading B8D. [Also in Division H1] An evacuable container 10 has a base-plate 20, an annular flange 16 constructed to fit over and around the periphery of the base-plate and a glass vessel 11 open at one end and having a lip at its open end sealed to the annular flange, the flange 16 having an outwardly extending flat portion 18 arranged when the flange is fitted over the base-plate to be flush with the outer surface 23 of the base-plate, the outer surface 23 having a rabbet 24 round its periphery to form with the flange an annular groove 25. The container is closed by applying a metal sheet 55 across outer surface 23 to cover it and extending outwards to be sealed to the periphery of the flange; and the container is opened by slitting the sheet metal 55 along the annular groove, Fig. 4 (not shown). A number of these containers may be used in making vacuum discharge tubes (see Division H1). |
