Power plants – Motor operated by expansion and/or contraction of a unit of... – Mass is a solid
Patent
1992-01-30
1993-10-26
Husar, Stephen F.
Power plants
Motor operated by expansion and/or contraction of a unit of...
Mass is a solid
2041802, F01B 2910
Patent
active
052559726
ABSTRACT:
An internal electrode is printed on one surface of each electrostrictive ceramic green sheet by the screen printing. Two such electrostrictive ceramic green sheets each with an internal electrode layer are laid the electrostrictive ceramic layer of one on the internal electrode layer of the other and rolled together, and then sintered. Subsequently lead wires are soldered to the exposed portions of the corresponding internal electrodes. In virtue of this, small-size, low-voltage driven, highly reliable electrostrictive effect elements can be obtained, and the manufacture of them is very facilitated with the effect of remarkably reducing manufacture cost. In addition the electrostrictive effect element according to the present invention has the capability of radial expansion and contraction about the central axis of the rolled structure and thereby can be applied to new use out of the scope of the prior art.
REFERENCES:
patent: 4681667 (1987-07-01), Utsumi et al.
patent: 4864824 (1989-09-01), Gabriel et al.
patent: 5173162 (1992-12-01), Hagimura et al.
Husar Stephen F.
NEC Corporation
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