Self cleaning device for sight flow indicators

Signals and indicators – Indicators – Fluid flow

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7386175, G01F 1512

Patent

active

051037572

ABSTRACT:
A self cleaning device for rotatable sight glass equipped visual flow indicators (for visually indicating fluid flow therethrough) that includes several stationary wiper implements that each include a wiper holder fixedly mounting a wiper in the form of a tube of compressible material that is in compressed wiping engagement with the inside surfacing of the sight glass, for improved wiping away of foreign materials when the sight glass is rotated for this purpose.

REFERENCES:
patent: 2648857 (1953-08-01), Kelly et al.
patent: 4037471 (1977-07-01), Okamoto et al.
Kobold 1990 Catalog (in loose leaf form), five sheets selected and submitted herewith, said Kobold 1990 Catalog received by Dwyer Instruments, Inc. (Applicant's employer), Jul. 1990.

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