Variable analog output pressure switch

Details Variable analog output pressure switch Variable analog output pressure switch

2007-08-14

2007-08-14

Allen, Andre J. (Department: 2855)

Measuring and testing

Fluid pressure gauge

Photoelectric

Reexamination Certificate

active

11390845

ABSTRACT:
A variable analog output pressure switch having a diaphragm attached to a plunger, the plunger controlling the amount of light detected by a photocell or photodetector, the photocell or photodetector outputting voltage roughly proportional to an applied pressure on the diaphragm.

REFERENCES:
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patent: 4581941 (1986-04-01), Obermann et al.
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patent: 6089098 (2000-07-01), Tylisz et al.
patent: 6154586 (2000-11-01), MacDonald et al.
patent: 6870966 (2005-03-01), Silverbrook et al.
patent: 6980704 (2005-12-01), Kia et al.
patent: 2007/0014490 (2007-01-01), Silverbrook et al.

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