Pressure sensor

Details Pressure sensor Pressure sensor

2006-10-03

2006-10-03

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Fluid pressure gauge

Diaphragm

C073S753000, C073S756000

Reexamination Certificate

active

07114396

ABSTRACT:
A pressure sensor has a sensing unit and a pressure transmitting rod housed in a case, and a pressure receiving diaphragm. The case has a sensing unit housing portion and a pipe portion that extends from the sensing unit housing portion in a form of a pipe. The pipe portion includes an inner pipe and an outer pipe. The inner pipe is arranged inside the outer pipe and fixed to the outer pipe. The pipe portion has the first end located adjacent to the sensing unit and the second end away from the sensing unit. The inner pipe is projected from the outer pipe at the second end of the pipe portion. The pressure receiving diaphragm is welded to the inner pipe at the second end of the pipe portion such that it covers an opening of the inner pipe. The pressure transmitting rod is arranged inside the case such that its first end and second end are located on the sensing unit side and the pressure receiving diaphragm side, respectively. Pressure received by the pressure sensing diaphragm is transmitted to the sensing unit via the pressure transmitting rod.

REFERENCES:
patent: 5024294 (1991-06-01), Van Fossen et al.
patent: 5115676 (1992-05-01), Lee
patent: 5219041 (1993-06-01), Greve
patent: 5279163 (1994-01-01), D'Antonio et al.
patent: 5463904 (1995-11-01), Kalinoski
patent: A-5-34231 (1993-09-01), None

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