Pressure gauge

Details Pressure gauge Pressure gauge

1986-06-16

1988-04-26

Levy, Stewart J.

Measuring and testing

Borehole or drilling

Downhole test

73712, 73742, 346125, 346 33TP, E21B 4700

Patent

active

047396539

ABSTRACT:
This invention relates to a sub surface pressure gauge comprising an axially displaceable drum with a chart disposed within a housing and having a selective axial movement, rotatable stylus for recordal of pressures on said chart provided on said drum. A motor actuates the drum through a programmable switch, the output shaft of said motor providing for linear displaceable movement of the drum controlled by said switch.

REFERENCES:
patent: 2265098 (1941-12-01), Bettis
patent: 2942462 (1960-06-01), Buck
patent: 3232115 (1966-02-01), Bennett et al.
patent: 3732728 (1973-05-01), Fitzpatrick
patent: 4161782 (1979-07-01), McCracken
patent: 4224628 (1980-09-01), Murray
patent: 4570234 (1986-02-01), Baack

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