Thermoplastic sight monitor

Details Thermoplastic sight monitor Thermoplastic sight monitor

1987-12-21

1989-02-28

Yasich, Daniel M.

Measuring and testing

Liquid level or depth gauge

Sight glass

73306, 73326, 285 93, G01F 2302, F16L 4700

Patent

active

048074730

ABSTRACT:
A liquid sight monitor includes a translucent thermoplastic viewing tubular element having ends that are flared, after the tube is inserted through the central holes of flanges located at either end, to secure the viewing element in place. A float may be included in the viewing element of the same material and cup shaped to entrap air so that the float rises to the level of the fluid surface, even though it is otherwise heavier than the fluid. A flow-through restrictor disk prevents the float from falling out the bottom of the viewing element when there is an absence of fluid therein. The monitor may have a protective see-through shield connected between its top and bottom flanges, if desired.

REFERENCES:
patent: 2732715 (1956-01-01), Hawkins
patent: 2833148 (1958-05-01), Hoyt et al.
patent: 3046785 (1962-07-01), Au Werter
patent: 3096748 (1963-07-01), Harry
patent: 3183716 (1965-05-01), Lyon
patent: 3381976 (1968-05-01), Goodson et al.
patent: 3693441 (1972-09-01), von Obstfelder
patent: 4335825 (1982-06-01), Sakazume
patent: 4371490 (1983-03-01), Mizusaki
patent: 4753458 (1988-06-01), Case et al.

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