Pressure sensor

Details Pressure sensor Pressure sensor

2006-11-21

2006-11-21

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Fluid pressure gauge

Mounting and connection

Reexamination Certificate

active

07137304

ABSTRACT:
The pressure sensor of the invention, with an internal hydraulic system for pressure transfer, has a seal enabling an exact fill volume for the hydraulic system. The pressure sensor includes: a platform; at least one separating membrane, which, with the platform, encloses a pressure chamber; a hydraulic path inside the platform, which communicates with the pressure chamber; a platform blind hole in a surface of the platform, with, extending from the end of the platform blind hole, a canal, which communicates with the hydraulic path, wherein the diameter of the canal is smaller than the diameter of the platform blind hole, so that a first abutment surface is formed between the platform blind hole and the canal; a sealing element insertable into the platform blind hole and having a second abutment surface complementary to the first abutment surface and having a radially flexible, lateral surface; and an expander, which can be brought into engagement with the sealing element, in order to expand the lateral surface of the sealing element radially.

REFERENCES:
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patent: 4965777 (1990-10-01), Timossi et al.
patent: 5492017 (1996-02-01), Jennings et al.
patent: 41 39 147 (1992-06-01), None
patent: 197 44 208 (1998-12-01), None
patent: 200 13 295 (2001-04-01), None
patent: 21 65 055 (1986-04-01), None

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