Sight glass

Details Sight glass Sight glass

1991-10-15

1992-06-30

Will, Thomas B.

Measuring and testing

Liquid level or depth gauge

Sight glass

73325, 116276, 137559, G01F 2302

Patent

active

051252694

ABSTRACT:
A sight glass includes a solid acrylic ring-shaped body with a glass tubular liner mounted to the interior cylindrical surface of the body with a fuel and fuel-additive resistant sealant. The liner has a diameter slightly less than the interior diameter of the body so as to form an annular air space therebetween. The sealant is also an adhesive which connects the liner to the body. O-rings at the forward and rearward edges of the liner maintian the annular air space between the liner and body. The adhesive/sealant is a flexible resilient material which will permit the liner to move slightly longitudinally.

REFERENCES:
patent: 333046 (1885-12-01), Young
patent: 502073 (1893-07-01), Hallsman
patent: 1615118 (1927-01-01), Farragher et al.
patent: 2024815 (1935-12-01), Blackburn
patent: 2313889 (1943-03-01), Porter
patent: 3307400 (1967-03-01), LeRoy
patent: 3380303 (1968-04-01), LeRoy
patent: 4809862 (1989-03-01), Canty
patent: 4888990 (1989-12-01), Bryan et al.

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