Measuring and testing – Liquid level or depth gauge – Sight glass
Patent
1981-09-04
1984-05-08
Frankfort, Charles
Measuring and testing
Liquid level or depth gauge
Sight glass
G01F 2302
Patent
active
044467311
ABSTRACT:
A fluid container, e.g. in an air filter or lubricator, has a metal bowl with a sight glass comprising an elongate light-transmitting member of longitudinally tapered form. The sight glass member is slidable into a complementary tapered slot or recess defined by a flange integral with the bowl and overlying a flat wall portion provided with apertures to the main volume of the bowl and the space between said wall portion and the member adjacent top and bottom regions of the member respectively.
REFERENCES:
patent: 1063604 (1913-06-01), Scalley
Corr Denis E.
Frankfort Charles
Hoopes Dallett
Scovill Inc.
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