Observing window device for liquid tanks

Details Observing window device for liquid tanks Observing window device for liquid tanks

1980-10-31

1983-03-15

Lowrance, George E.

Receptacles

Container attachment or adjunct

Pressure relief means

73323, 116227, 411516, 220 82A, B65D 2554, B65D 2556, G01F 2302

Patent

active

043764908

ABSTRACT:
A flanged cup-shaped transparent pane member is fitted in a window opening formed in the tank wall and held liquid-tight against the latter by means of a pane retainer plate which is inserted along the wall inside into the pane member through slit means provided therein. The retainer plate fully inserted abuts against a shoulder formation on the wall inside and serves to hold the pane member against inadvertent rotation as well as against falling off the tank wall. That portion of the retainer plate which extends across the follow interior of the cup-shaped pane member serves as a light reflector means for enabling the user to observe the liquid level in the tank with ease and accuracy. A minimum level indicator is formed on the closed end wall of the pane member and a maximum level indicator on the retainer plate at its top for convenience in replenishing the liquid tank.

REFERENCES:
patent: 1644298 (1927-10-01), Ledbetter
patent: 2405476 (1946-08-01), Weatherhead
patent: 3000345 (1961-09-01), Gray
patent: 3248946 (1966-05-01), Cochtenberg
patent: 3340760 (1967-09-01), Wormser
patent: 3667645 (1972-06-01), Emmer

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