Measuring and testing – Fluid pressure gauge – Bourdon
Reexamination Certificate
2006-10-24
2006-10-24
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Fluid pressure gauge
Bourdon
C073S715000, C073S736000
Reexamination Certificate
active
07124642
ABSTRACT:
A dual gauge system determines pressures of two separately contained gases by use of two separate pointer—Bourdon tube sections within the dual gauge. The Bourdon tube of a first one of the sections is gaseously coupled to a first one of the contained gases to determine pressure of the first one of the contained gases and a Bourdon tube of a second one of the sections is gaseously coupled to a second one of the contained gases to determine pressure of the second one of the contained gases. Accuracy of pressure determination is enhanced by allowing for separate calibration of each of the two gauge sections.
REFERENCES:
patent: 3956920 (1976-05-01), Kollmeyer
patent: 4058016 (1977-11-01), Schwartz
patent: 4916944 (1990-04-01), Ho-Chuan
patent: 5363703 (1994-11-01), Delatorre
patent: 5652391 (1997-07-01), Kingsford et al.
Campbell Sidney R.
Kope Tyler R. M.
Davis , Wright, Tremaine, LLP
Jenkins Jermaine
Johnson Brian L.
Lefkowitz Edward
Right Weigh, Inc.
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