Flow meter with displaceable flow rate indicator

Details Flow meter with displaceable flow rate indicator Flow meter with displaceable flow rate indicator

1985-01-04

1986-10-28

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Combined

7386155, G01F 122

Patent

active

046191399

ABSTRACT:
A flow meter includes a transparent tubular housing in which an indicator in the form of a piston having a radially expanded edge cooperates with a tapered inner peripheral wall portion of the housing. The housing can include scale indicia of flow rates coinciding with positions of the indicator edge. In addition, a temperature sensitive label providing a visible indication of fluid temperature can be orthogonally aligned with respect to the flow rate scale to permit accurate placement of a graphic overlay exhibiting representations of a different fluid characteristic which varies with changes in the flow rate and temperature of the fluid within the ranges indicated by the meter. Projection of the temperature indication to the indicator edge identifies a particular value for the fluid characteristic shown on the graphic representation by mere observation. The inner periphery of the housing includes a radially expanded portion at one end to provide a bypass for fluid at flow rates greater than the normal range for the meter.

REFERENCES:
patent: 2755664 (1956-07-01), Chapman
patent: 3528288 (1970-09-01), Scourtes
patent: 3910112 (1975-10-01), Gerlach
patent: 3979955 (1976-09-01), Schulte et al.
patent: 4235105 (1980-11-01), Walter
patent: 4361051 (1982-11-01), de Fasselle et al.
patent: 4424716 (1984-01-01), Boehringer et al.

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