Sight flow indicator

Details Sight flow indicator Sight flow indicator

1989-11-07

1990-08-07

Rivell, John

Fluid handling

With indicator, register, recorder, alarm or inspection means

Inspection means

116274, 116276, G01F 1500, F16K 3700

Patent

active

049459481

ABSTRACT:
A sight flow indicator for visually indicating fluid flow through a conduit including a housing that has an inlet and an outlet and defines a flow passage between the two, the flow passage including a sighting region and a downstream restricted region that has a smaller flow area than said sighting region, a window in the housing providing viewing of the sighting region, and an elongated member that is located in the sighting region that is too long to move from the sighting region into the restricted region and is sufficiently smaller than the sighting region so as to be capable of vibrating about in the sighting region in response to flow of fluid therethrough.

REFERENCES:
patent: 1179441 (1916-04-01), Lewis
patent: 2520869 (1948-09-01), Windsor
patent: 2549276 (1951-04-01), Wolfe
patent: 2678624 (1954-05-01), Grise et al.
patent: 2847969 (1956-07-01), Woodruff
patent: 2970561 (1961-02-01), Ashwood
patent: 3015300 (1962-01-01), Tarbox
patent: 3323484 (1967-06-01), Minkin et al.
patent: 4474209 (1984-10-01), Akhtarekhavari
patent: 4819577 (1989-04-01), Campau

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