Exhaust pressure transducer

Details Exhaust pressure transducer Exhaust pressure transducer

1992-08-19

1998-12-01

Ledynh, Bot L.

Electricity: electrical systems and devices

Electrostatic capacitors

Variable

73718, 73724, 3612831, H01G 700

Patent

active

058447695

ABSTRACT:
An exhaust pressure capacitive transducer includes an improved pressure sensing cavity configuration. The cavity is either in the form of a wide cylinder or a cone so that the housing structure does not underlie the deflecting portion of the diaphragm but only the nondeflecting peripheral edge portion thereof to eliminating any ledges underlying the diaphragm which could collect soot thereon and prevent the diaphragm from returning to its undeflected position and giving an improper pressure reading.

REFERENCES:
patent: 4128006 (1978-12-01), Grabow
patent: 4207604 (1980-06-01), Bell
patent: 4414851 (1983-11-01), Maglic
patent: 4425799 (1984-01-01), Park
patent: 4426673 (1984-01-01), Bell et al.
patent: 4490773 (1984-12-01), Moffait
patent: 4774626 (1988-09-01), Charboneau et al.
patent: 5060108 (1991-10-01), Baker et al.
patent: 5079921 (1992-01-01), McCandless et al.
patent: 5079953 (1992-01-01), Martin et al.
patent: 5159525 (1992-10-01), Tate
patent: 5186054 (1993-02-01), Sekimura

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