Part for measuring forces or pressures, and sensor...

Details Part for measuring forces or pressures, and sensor... Part for measuring forces or pressures, and sensor...

2008-11-24

2011-12-13

McCall, Eric S (Department: 2855)

Measuring and testing

Internal combustion engine or related engine system or...

Compression

Reexamination Certificate

active

08074502

ABSTRACT:
A part to be mounted into force or pressure sensors includes an annular measuring element made of piezoelectric material. First and second electrodes rest against respective opposite sides of the measuring element and are provided with wires. An electrically insulating transmission member laterally adjoins the first electrode, across from the measuring element. Another electrically insulating insulation member laterally adjoins the second electrode, across from the measuring element. All components are mounted within the part in such a way as to be centered relative to each other. The external face of the transmission member and the external face of the insulation member which face away from and run parallel to the electrodes are designed in a very planar manner, having a levelness of less than 10 μm.

REFERENCES:
patent: 7712444 (2010-05-01), Kern et al.
patent: 7759612 (2010-07-01), Last et al.
patent: 2006/0218997 (2006-10-01), Yamada et al.
patent: 2007/0228030 (2007-10-01), Boucard et al.
patent: 2007/0295710 (2007-12-01), Yamada et al.
patent: 2009/0026889 (2009-01-01), Wolfer et al.
patent: 2009/0165739 (2009-07-01), Kern et al.
patent: 2009/0242540 (2009-10-01), Itoh et al.
patent: 1460403 (2004-09-01), None
patent: 1557654 (2005-07-01), None
patent: 2004/070334 (2004-08-01), None
patent: 2006/089446 (2006-08-01), None
patent: 2007/096205 (2007-08-01), None
International Search Report on Patentability, issued Jan. 15, 2010.
English translation of International Preliminary Examination Report on Patentability, issued Jun. 8, 2010.

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