Viewing glass for vacuum apparatus

Receptacles – Compartmented container – Compartment partition is movable or removable

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Details

350589, 220663, 73334, B65D 2554, G02B 700

Patent

active

049866362

ABSTRACT:
The invention is directed to a viewing glass having a transparent pane and a pair of flanges. In order to facilitate simple manufacture of the viewing glass, it is proposed that the pane be arranged in an inside step of the one of the flanges and be surrounded by an O-ring for producing a vacuum-tight connection. The edge of the pane and the step of the flange preferably have corresponding frustoconical surfaces.

REFERENCES:
patent: 2942469 (1960-06-01), LeRoy
patent: 3556038 (1971-01-01), Wolfe
patent: 3625390 (1971-12-01), Meginnis
patent: 3880005 (1975-04-01), Butterfield et al.
patent: 3922999 (1975-12-01), Meginnis
patent: 4182179 (1980-01-01), Meginnis
patent: 4807474 (1989-02-01), Foster
"Transactions of the ASME" Journal of Engineering for Industry, Published Quarterly by the American Society of Mechanical Engineers, Nov. 1971, pp. 943-952.

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