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1. US5801475 - Piezo-electricity generation device

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Office United States of America
Application Number 08812070
Application Date 06.03.1997
Publication Number 5801475
Publication Date 01.09.1998
Grant Number 5801475
Grant Date 01.09.1998
Publication Kind A
IPC
H01L 41/08
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
08Piezo-electric or electrostrictive elements
G01P 13/00
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK; INDICATING PRESENCE OR ABSENCE OF MOVEMENT;  INDICATING DIRECTION OF MOVEMENT 
13Indicating or recording presence or absence of movement; Indicating or recording of direction of movement
G01P 15/09
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK; INDICATING PRESENCE OR ABSENCE OF MOVEMENT;  INDICATING DIRECTION OF MOVEMENT 
15Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
02by making use of inertia forces
08with conversion into electric or magnetic values
09by piezo-electric pick-up
G01P 15/18
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK; INDICATING PRESENCE OR ABSENCE OF MOVEMENT;  INDICATING DIRECTION OF MOVEMENT 
15Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
18in two or more dimensions
H01L 41/113
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
08Piezo-electric or electrostrictive elements
113with mechanical input and electrical output
CPC
H01L 41/1136
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
08Piezo-electric or electrostrictive devices
113with mechanical input and electrical output ; , e.g. generators, sensors
1134Beam type
1136Cantilevers
G01P 13/00
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
13Indicating or recording presence, absence, or direction, of movement
G01P 15/0922
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
15Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
02by making use of inertia forces ; using solid seismic masses
08with conversion into electric or magnetic values
09by piezo-electric pick-up
0922of the bending or flexing mode type
G01P 15/18
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
15Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
18in two or more dimensions
G01P 2015/084
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
15Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
02by making use of inertia forces ; using solid seismic masses
08with conversion into electric or magnetic values
0805being provided with a particular type of spring-mass-system for defining the displacement of a seismic mass due to an external acceleration
0822for defining out-of-plane movement of the mass
084the mass being suspended at more than one of its sides, e.g. membrane-type suspension, so as to permit multi-axis movement of the mass
H01L 41/1138
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
41Piezo-electric devices in general; Electrostrictive devices in general; Magnetostrictive devices in general; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
08Piezo-electric or electrostrictive devices
113with mechanical input and electrical output ; , e.g. generators, sensors
1138Membrane type
Applicants Mitsuteru Kimura
Ricoh Seiki Company, Ltd.
Inventors Kimura Mitsuteru
Agents McDermott, Will & Emery
Priority Data 1993268317 30.09.1993 JP
Title
(EN) Piezo-electricity generation device
front page image
Abstract
(EN)

A piezo-electricity generation device without an external power supply unit includes a rectifying means which rectifies an AC voltage generated by the vibration of at least one piezo-electric plate. An accumulating means accumulates an electric charge outputted through the rectifying means. A voltage setting means provides a prespecified voltage. A transmission means transmits substantially all of the electric charge accumulated in the accumulating means to a signal output means when the output voltage of the accumulating means exceeds the prespecified voltage set by the voltage setting means. A timing setting means may also or alternatively be provided for setting a prespecified timing such that the transmission means transmits substantially all of the electric charge stored in the accumulating means at the prespecified timing set by said timing setting means.
Also published as
JP1995107752
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