Measuring and testing – With fluid pressure – Fluid pressure brake system or unit
Patent
1983-08-24
1985-04-30
Ciarlante, Anthony V.
Measuring and testing
With fluid pressure
Fluid pressure brake system or unit
116291, G01M 328
Patent
active
045136041
ABSTRACT:
Method and apparatus for indicating on a pressure differential gauge whether air leakage in a compressed air line is within a predetermined acceptable level, the gauge has pressure-responsive and manually shiftable pointers and is connectable in the air line across a first restriction in the line for indicating by the pressure-responsive pointer pressure differentials across the first restriction, and a second restriction temporarily insertable in the line downstream of the first restriction for passing air at a rate equal to the permissible air leakage from the line, and discharging air through the second restriction and indicating by the manually shiftable pointer the position of the pressure-responsive pointer during such discharge, the manually shiftable pointer after removal of the temporary restriction indicating by the relative position of the pressure-responsive pointer on charging of the line whether leakage therefrom is within acceptable limits.
REFERENCES:
patent: 2674121 (1954-04-01), Gorman
patent: 3045638 (1962-07-01), Davio
patent: 3175531 (1965-03-01), Du Bois
patent: 3203391 (1965-08-01), Corwin
patent: 3531981 (1970-10-01), Pommer
Bowles Robert W.
Frantz Virgil L.
Ciarlante Anthony V.
Mechlin Wilmer
Roskos Joseph W.
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