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Class 368/255 - With piezoelectric means


Subclass of Class 368 - Horology: time measuring systems or devices
Definition: Subject matter wherein the alarm means is at least partly
No. of patents: 53
Last issue date: 08/07/2007


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NumberTitleIssue Date
7253552Piezoelectric actuator, timepiece, and portable device
A rectangular vibrating plate 10 in which a piezoelectric element and a reinforcing plate are stacked is supported on a main plate by a support member 11, and is urged toward the rotor 100 by an elastic force of the support member 11. Thi...
08/07/2007
7201996Sound generator for a portable device
A sound generating device is mounted in a recess formed in a case, and a battery is mounted on the case. A pair of terminals are provided on the underside of the case. A pair of leads connect a pair of electrodes of the battery with the terminals. ...
04/10/2007
7199507Piezoelectric motors and motor driving configurations
A piezoelectric motor comprising: a piezoelectric vibrator having an axis of symmetry and a first vibration mode, which when excited generates oscillatory motion of mass points in the vibrator parallel to the axis of symmetry; and at least one friction nub having a ...
04/03/2007
7173362Vibratory motors and methods of making and using same
A single piezoelectric is excited at a first frequency to cause two vibration modes in a resonator producing a first elliptical motion in a first direction at a selected contacting portion of the resonator that is placed in frictional engagement with a driven elemen...
02/06/2007
7042742Charge-pump circuitry
A charge-pump circuitry which receives an external voltage source to generate a target voltage is provided. The charge-pump circuitry comprises a voltage multiplier module and a voltage difference generating circuitry. Wherein, a first input terminal of the voltage ...
05/09/2006
6995496Electrical power extraction from mechanical disturbances
A method of extracting power includes coupling a transducer that converts mechanical power to electrical power to a disturbance; coupling an electrical circuit to the transducer such that a peak voltage experienced by the transducer is greater than two times higher ...
02/07/2006
6885615Piezoelectric actuator, time piece, and portable device
A rectangular vibrating plate 10 in which a piezoelectric element and a reinforcing plate are stacked is supported on a main plate by a support member 11, and is urged toward the rotor 100 by an elastic force of the support member 11. Thi...
04/26/2005
6813223Portable object such as, in particular, a timepiece, including a piezoelectric transducer for entering data manually
The present invention concerns a portable object such as, in particular, a timepiece (1), including means (16) for displaying at least one data item and a case (2) formed of a top portion including a crystal (14) covering the display mean...
11/02/2004
6747916Communication system between a portable unit and a communication terminal
The present invention concerns a communication system between a portable unit, such as a watch, and a communication terminal (2) such as a personal computer or PC, characterized in that the communication terminal (2) includes at least means for transmi...
06/08/2004
6577559Electronic converter for converting an acoustic signal into a pseudo-digital signal, timepiece including such a converter and two-directional communication method via acoustic waves
The present invention concerns the use of a sound generator circuit (22) including a piezoelectric vibrator (P3) as an acoustic wave receiver. The invention also concerns an electronic converter (20) including a sound generator circuit (22) provided...
06/10/2003
6349075Electron equipment
A small electronic equipment with a vibration alarm has, as a drive source, a flat stator type bipolar stepping motor, which has a rotor having high durability, can be assembled easily, requires low power consumption, is started constantly stably, and can...
02/19/2002
6266296Actuator, and timepiece and notification device using the same
To provide an actuator which can achieve a reduction in size and weight of a device in which the actuator is mounted by amplifying and outputting displacement of a movable end of a vibrating plate as vibration in an in-plane direction, and to provide a ti...
07/24/2001
6219304Device capable of being submerged and including an acoustic transducer
A device includes a case (2) in which an acoustic transducer (11) is mounted so as to communicate in a water tight manner with the exterior of the case (2) via acoustic energy. The transducer (11) is mounted in front of a membrane (18) able to be deformed...
04/17/2001
6014347Device capable of being submerged and including an acoustic transducer
A case (2) in which an acoustic transducer (22) is mounted so as to communicate in a watertight manner with the exterior of the case (2) via acoustic energy. The transducer (22) is attached to a membrane (17) separating it in a watertight manner from an i...
01/11/2000
5878004Electronic equipment with vibration alarm
A small electronic equipment with a vibration alarm has, as a drive source, a flat stator type bipolar stepping motor, which has a rotor having high durability, can be assembled easily, requires low power consumption, is started constantly stably, and can...
03/02/1999
5842288Clothes dryer with chiming alarm
A solid state alarm for a clothes dryer receives a line voltage signal prior to termination of the tumbling cycle to provide a series of pulses with decaying amplitudes driving a piezoelectric-type transducer. A timer terminating the series of pulses comm...
12/01/1998
5668783Sound generator in particular for a timepiece
A sound generator comprises a transducer (3) intended to be supplied with a signal having a frequency determining the sound to be produced and having a variable amplitude (envelope). To this effect, the transducer is connected in series with the principal...
09/16/1997
5604718Timepiece Comprising an electro-acoustic transducer
The piezo-electric device (9) which connects a glass (8) to a movement (3) of the timepiece (1) is arranged in such a way as to deform in flexion in response to an exciting signal applied to its electrodes. The attachment zones (9a,9b) of this device (9) ...
02/18/1997
5602521Electronic device with light
An electronic device with a display having a light source, such as an electroluminescent element, becomes easier to see and is reduced in size and power consumption when a single boosting element is used for selectively driving the light source and an add...
02/11/1997
5493543Capacitive charge pump driver circuit for piezoelectric alarm
A capacitive charge pump circuit and associated method is provided for outputting an output voltage which has a magnitude which is an integer multiple of the magnitude of a power supply voltage used to power the circuit. In one form, a capacitor is charge...
02/20/1996
5043956Wristwatch with oscillation alarm
A wristwatch with an oscillation alarm uses an ultrasonic motor as its drive source. A vibration member has a piezoelectric element adhered thereto on one side and comb-like projections on the other side. A rotor has a sliding member composed of resin at ...
08/27/1991
5023853Electric apparatus with silent alarm
A timepiece in which a vibration member starts vibration at an alarm time to let a person know the alarm time. The timepiece comprises a case having a shape of thin, small-sized wrist watch form, timekeeping circuit for counting a present time, alarm circ...
06/11/1991
4918674Alarm timepiece
An alarm timepiece the internal movements and electronic components of which can be arranged and accommodated more efficiently in that the alarm diaphragm with a piezo-electric element attached thereto is obliquely mounted within the frame of the timepiec...
04/17/1990
4904982Visual and audible warning device
A visual and audible warning device has a piezoelectric element operable to cause vibrations which are transmitted through a light transmitting member, and a light emitting element which upon actuation causes a visual warning to be transmitted through the...
02/27/1990
4821257Electricity supply structure for a piezoelectric vibrator
An electricity supply structure for a piezoelectric vibrator includes a circuit board and a coil spring having one end positioned in contact with the circuit board and the other end with a portion extending toward the center of the spring and a rising con...
04/11/1989
4775948Baseball having inherent speed-measuring capabilities
A baseball with a self-contained speed-measuring module positioned within a hollowed-out portion of the solid core of the ball, with the upper portion of the module being a display unit that indicates the speed at which the baseball was thrown over a fixe...
10/04/1988
4697932Multi-signal alarm
A piezoelectric signaling device that produces a predetermined number of audio signals when activated. The device includes a timer, a pulser, an audio oscillator, and a piezoelectric transducer. The timer enables the pulser for a predetermined time. While...
10/06/1987
4663624Pager having receiving frame tuned by transducer
A pager is described for use in an electronic watch. The pager comprises a frame (1) for picking up a magnetic signal and a piezoelectric transducer (11) having a static capacitance on its terminals, for producing a sound. 11 To improve sensitivity of rec...
05/05/1987
4567806Sound generator
The sound generator applies an envelope to the note signal. Current to the sound producing element is controlled by a series transistor whose base is driven with a signal having a frequency corresponding to the musical note. The driving voltage applied to...
02/04/1986
4529322Booster circuit for electronic watch elements
A booster circuit in an electronic watch having: hands for indicating time or a display portion such as a panel for displaying time digitally; a lamp for lighting the display portion by electroluminescence (EL element); and a sound generating portion for ...
07/16/1985
4526477Piezoelectric buzzer for wrist watches
A piezoelectric buzzer directly secured to a portion of a wrist watch casing and driven to vibrate the casing and produce an alarm sound. Associated circuitry alternately drives the piezoelectric buzzer at two different frequencies having a frequency rati...
07/02/1985
4523856Electronic timepiece including an electro-acoustic transducer
An electronic timepiece is provided with an alarm and means coupling a sounding unit to a circuit generating a sonic signal. The first electrode (6) of the sounding unit (5) is mechanically and electrically fixed to a metallized decoration (4) set under t...
06/18/1985
4496247Display device with transparent cover as a vibrator of a sound generator
Disclosed is a display device including a transparent piezoelectric element having transparent electrodes coated on both surfaces thereof, bonded by transparent adhesive material on an inner surface of a transparent cover to be arranged in front of a disp...
01/29/1985
4487099Electro-acoustic transducer drive circuit for producing damped waveform envelope musical notes
An electro-acoustic transducer drive circuit for driving a device such as a miniature piezoelectric buzzer to emit musical notes, the notes having a damped waveform envelope whose shape is controlled by digital signals. The notes are formed by mutually in...
12/11/1984
4471258Piezoelectric ceramic transducer
In a transducer including at least a piezoelectric ceramic plate which has curved surfaces, electrodes which are formed on both the main surfaces of the piezoelectric ceramic plate, a frame which holds the piezoelectric ceramic plate, and means for applyi...
09/11/1984
4459037Wristwatch with piezoelectric buzzer
A wristwatch having a piezoelectric buzzer therein includes a watch case and a case back. The piezoelectric buzzer includes a piezoelectric element mounted on the case back inside the watch case. A driver selectively applies signals having a frequency of ...
07/10/1984
4445113Small type acoustic device
A small acoustic device is provided with a housing, a first electrically actuated vibrating plate and a second vibrating plate. A support member cooperates with the housing for mounting the periphery of the second vibrating plate to the housing to define ...
04/24/1984
4440504Electronic timepiece including a piezoelectric alarm
An electronic timepiece including a piezoelectric type alarm buzzer wherein the caseback functions as the buzzer diaphragm is provided. The piezoelectric element is mounted on the caseback and a battery for driving the timepiece is mounted on the piezoele...
04/03/1984
4392747Display device structure
A display device structure comprising a casing, a display panel placed in the casing, a transparent covering and vibrating plate member on the front side of the display panel and an actuator for the plate member. The covering and vibrating plate member is...
07/12/1983
4391532Electromagnetic acoustic transducer
An alarm electronic wristwatch has an electromagnetic acoustic transducer having a base plate having a plurality of upstanding projections, and a lead substrate superposed on the base plate and having a plurality of openings dimensioned to receive respect...
07/05/1983
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