Diaphragm type fluid pressure gauge

Details Diaphragm type fluid pressure gauge Diaphragm type fluid pressure gauge

1991-07-30

1993-01-26

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Diaphragm

73431, G01L 708

Patent

active

051814226

ABSTRACT:
A diaphragm type fluid pressure gauge comprises a case formed of an injection molded thermoplastic. The bottom wall of the case selectively defines a rear axial fluid connection or a radial fluid connection to a fluid chamber defined within the case. The fluid chamber is closed by a diaphragm which is clamped against an annular radial surface in the case by a thermoplastic ring which is melt-welded to the case. The other face of the ring provides a mounting for a movement mechanism for driving a pointer in response to axial displacement of the diaphragm.

REFERENCES:
patent: 3543586 (1970-12-01), Waite
patent: 3795148 (1974-03-01), Luich
patent: 4589287 (1986-05-01), Dickens

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