Pre-failure sensing diaphragm

Details Pre-failure sensing diaphragm Pre-failure sensing diaphragm

1995-03-16

1996-10-01

Lopez, F. Daniel

Expansible chamber devices

With inspection window in expansible chamber wall portion

With lock

92103SD, 417 63, F01B 2526

Patent

active

055602797

ABSTRACT:
A combined sensing and barrier element is provided. This sensing element is most useful as a flexible diaphragm which is also described herein. The flexible diaphragm has a resilient elastomeric body and a sensing element having at least one conductive component and at least two nonconductive components such that the conductive component is positioned between the nonconductive components. A change in electrical resistance is recorded by an electrical monitoring device that is electrically connected to the conductive component. By observing changes in the resistance that deviate from a predetermined norm, significant wear of a diaphragm can be determined prior to its failure.

REFERENCES:
patent: 4569634 (1986-02-01), Mantell
patent: 4740139 (1988-04-01), Mantell
patent: 4787825 (1988-11-01), Mantell
patent: 4934902 (1990-06-01), Mantell
patent: 4971523 (1990-11-01), Wacker et al.
patent: 5062770 (1991-11-01), Story et al.
patent: 5217797 (1993-06-01), Knox et al.
patent: 5374473 (1994-12-01), Knox et al.

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