Digital pressure gauge

Details Digital pressure gauge Digital pressure gauge

2006-10-10

2006-10-10

Colilla, Daniel J. (Department: 2854)

Measuring and testing

Fluid pressure gauge

Diaphragm

C600S480000, C600S485000, C702S085000

Reexamination Certificate

active

07117746

ABSTRACT:
A digital pressure gauge comprises a power supply, an input button unit, a pressure sensor, a display unit, a warning unit, and a control unit. The control unit counts the number of operations and/or operation duration of the digital pressure gauge and generates an alarm through the display unit and the warning unit when the counted number of operations and/or operation duration of the digital pressure gauge exceeds a threshold.

REFERENCES:
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patent: 3857399 (1974-12-01), Zacouto
patent: 3996928 (1976-12-01), Marx
patent: 4263918 (1981-04-01), Swearingen et al.
patent: 4320767 (1982-03-01), Villa-Real
patent: 4397317 (1983-08-01), Villa-Real
patent: 5238001 (1993-08-01), Gallant et al.
patent: 5485848 (1996-01-01), Jackson et al.
patent: 5875413 (1999-02-01), Vinci
patent: 6485429 (2002-11-01), Forstner

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