Measuring and testing – Engine detonation – Specific type of detonation sensor
Reexamination Certificate
2007-02-20
2007-02-20
McCall, Eric S. (Department: 2855)
Measuring and testing
Engine detonation
Specific type of detonation sensor
C073S035130, C073S117020
Reexamination Certificate
active
11187918
ABSTRACT:
A stacked body constituted by a first insulating sheet, a first terminal plate, a piezoelectric element, a second terminal plate, a second insulating sheet, a weight, and a disk spring is fitted over a cylindrical portion of a base, clamped and held between a nut and a flange portion of the base, and resin-molded. Annular partial electrodes having a width narrower than a radial width of the piezoelectric element are formed on front and rear surfaces of the piezoelectric element. The first and second terminal plates have annular portions formed so as to have annular shapes having an outside diameter and an inside diameter substantially equal to those of the partial electrodes, and are stacked such that the annular portions are placed in close contact with entire surfaces of the partial electrodes.
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Kohashi Masao
Shibata Harumasa
Yokoi Akito
McCall Eric S.
Mitsubishi Denki & Kabushiki Kaisha
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