Pressure gauge for measuring pressure in liquid and gasseous...

Details Pressure gauge for measuring pressure in liquid and gasseous... Pressure gauge for measuring pressure in liquid and gasseous...

2007-02-20

2007-02-20

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Fluid pressure gauge

Mounting and connection

C073S706000

Reexamination Certificate

active

11071164

ABSTRACT:
A pressure gauge comprising a thread tube, a printed circuit board carrying a pressure sensing device installed on one side of the printed circuit board and tightly packed with silicon rubber to form the end cover of the thread tube. When used for testing the pressure of acidic or alkaline liquid the pressure sensing device of the pressure gauge will not be brought into contact with the liquid, but can sense the pressure through the silicon rubber packing to test the pressure of the acidic or alkaline liquid, and the range of application of the pressure gauge covers the test of pressure of gas, acidic liquid, alkaline liquid and low pressure gas.

REFERENCES:
patent: 4128006 (1978-12-01), Grabow
patent: 4776219 (1988-10-01), Friedrich
patent: 4890497 (1990-01-01), Cahill
patent: 5048181 (1991-09-01), Grider
patent: 5090247 (1992-02-01), Liebgen
patent: 6176138 (2001-01-01), Barr et al.
patent: 6561039 (2003-05-01), Ozawa

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