Shaped non-contact capacitive displacement sensors for...

Details Shaped non-contact capacitive displacement sensors for... Shaped non-contact capacitive displacement sensors for...

2006-10-03

2006-10-03

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

Specified electrical sensor or system

Reexamination Certificate

active

07114399

ABSTRACT:
An improved non-contact capacitive displacement sensor that may be employed for accurately measuring small distances between the sensor and shaped targets. The non-contact capacitive displacement sensor includes a probe having a sensor element and a guard element. The guard element substantially surrounds the sensor element. At least the sensor element has a shape that substantially matches the shape of a target element.

REFERENCES:
patent: 4766368 (1988-08-01), Cox
patent: 4864300 (1989-09-01), Zaremba
patent: 5337353 (1994-08-01), Boie et al.
patent: 5651044 (1997-07-01), Klotz, Jr. et al.
patent: 6400162 (2002-06-01), Mallory et al.
patent: 6700392 (2004-03-01), Haase

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