Portable gas purge and fill system for night vision equipment

Details Portable gas purge and fill system for night vision equipment Portable gas purge and fill system for night vision equipment

1995-02-22

1996-09-03

Raevis, Robert

Measuring and testing

Fluid pressure gauge

Combined

G01L 2700

Patent

active

055513026

ABSTRACT:
A portable gas purge and fill system. The inventive system (10) includes a portable housing having gas inlet and outlet couplings. An electronic pressure gauge (30) is disposed within the housing (11) for measuring the pressure of the fluid at the outlet (24) thereof. A self-check mechanism (32) is disposed within the housing (11) for verifying calibration and operation of the electronic pressure gauge (30). In a specific implementation, the invention further includes a pressure regulator (20) disposed within the housing and connected between the inlet (12) and outlets (24) thereof. A second gauge (14) is included for measuring the pressure of the fluid contained in the source. First, second and third two-way valves (18, 22, and 28) are included. The first two-way valve (18) is mounted between the second gauge (14) and the pressure regulator (20). The second two-way valve (22) is located between the pressure regulator (20) and the outlet (24). The third two-way valve (28) is located between the pressure regulator (20) and the self-check mechanism (32). A conventional safety valve (26) is included for safety. As the components are disposed within a single housing, a lightweight, portable purge fill system is provided.

REFERENCES:
patent: 2207898 (1940-07-01), Schoenecke
patent: 3633618 (1972-01-01), Blackmore
patent: 4658829 (1987-04-01), Wallace
patent: 4678460 (1987-07-01), Rosner
patent: 4698998 (1987-10-01), Varnagy

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