Plumbing test gauge

Details Plumbing test gauge Plumbing test gauge

1977-09-22

1979-09-25

Queisser, Richard C.

Measuring and testing

With fluid pressure

Leakage

73 498, 138 90, G01M 328

Patent

active

041686217

ABSTRACT:
A pressure indicator rod is attached to a spring pressed piston mounted upon a cap for a plumbing line. The rod is entirely retracted in the absence of pressure to be protected from impact and to be shielded from vandals. The indicator rod is visible from any angle for ease of reading.

REFERENCES:
patent: 1152276 (1915-08-01), Bowden
patent: 1213958 (1917-01-01), Schweinert et al.
patent: 1328572 (1920-01-01), Lees
patent: 1374578 (1921-04-01), Kraft
patent: 1473171 (1923-11-01), Bowden
patent: 2507124 (1950-05-01), Stillinger
patent: 2569120 (1951-09-01), Van Heuvel et al.
patent: 3380427 (1968-04-01), Rubin
patent: 3859849 (1975-01-01), Novak

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