Power plants – Pressure fluid source and motor – Pulsator
Patent
1992-09-22
1994-08-02
Look, Edward K.
Power plants
Pressure fluid source and motor
Pulsator
188267, 26714014, F15B 700, F16F 1503
Patent
active
053334558
ABSTRACT:
A displacement magnifying device for magnifying the displacement of a piezoelectric element according to an applied voltage, is applied to a vibration absorber and an actuator. The device includes a member for supporting the element, a first elastic sealing member forming part of a sealed chamber containing a non-compressible fluid which moves together with the other end of the element, a second elastic sealing member also forming part of the chamber, and a displacement transmitting member connected to the second sealing member. Preferably, the first sealing member is a diaphragm and the second sealing member is a bellows. By setting the volume change of the chamber per unit displacement of the first sealing member to be larger than the volume change of the chamber per unit displacement of the second sealing member, the displacement of the piezoelectric element is magnified and transmitted to the displacement transmitting member.
REFERENCES:
patent: 4583723 (1986-04-01), Ozawa
patent: 4669711 (1987-06-01), Beer
patent: 4789142 (1988-12-01), Hoying et al.
patent: 4793599 (1988-12-01), Ishioka
patent: 4802648 (1989-02-01), Decker et al.
patent: 5100166 (1992-03-01), Mitsui
Look Edward K.
Nguyen Hoang
Nissan Motor Co,. Ltd.
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