Differential pressure gauge for filter

Details Differential pressure gauge for filter Differential pressure gauge for filter

2007-06-05

2007-06-05

Thompson, Jewel (Department: 2855)

Measuring and testing

Fluid pressure gauge

Electrical

Reexamination Certificate

active

11011400

ABSTRACT:
An apparatus for measuring the differential pressure of fluid in filter. The apparatus comprises a housing defining a pressure chamber. A differential pressure gauge divides the pressure chamber into first and second fluid chambers. The differential pressure gauge is arranged to measure a differential pressure between fluid in the first chamber and fluid in the second chamber. The differential pressure gauge has a variable output.

REFERENCES:
patent: 4109510 (1978-08-01), Rodder
patent: 4569220 (1986-02-01), Hopfe et al.
patent: 5024294 (1991-06-01), Van Fossen et al.
patent: 5133323 (1992-07-01), Treusch
patent: 6981421 (2006-01-01), Palmer et al.

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