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Matches 1 - 44 out of 44


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3750383 QUARTZ-OSCILLATOR CONTROLLED TIMEPIECE USING LIQUID CRYSTAL DISPLAY DEVICE  
A timepiece which is quartz-oscillator controlled and which displays the time by means of a liquid crystal digital device, contains a low voltage battery for operating the quartz-oscillator circuit...
3788060 WATCH WITH AN ELECTRONIC BUZZER  
A watch with an electronic buzzer which comprises a double-constructed back cover including an inner back cover on which a piezoelectric element is mounted to produce a mechanical buzz sound when a...
3869855 ACOUSTICAL SOUND PRODUCER FOR CLOCKS, ESPECIALLY FOR WRISTWATCHES  
A sound producer for a watch with a pin of ferromagnetic material attached to the watch crystal and directly excited by an electromagnetic system.
4023162 Electronic buzzer  
An electronic buzzer comprises an acoustic vibrator comprised of a circular metal plate having its entire periphery rigidly secured to a support, and a piezoelectric element adhered to one face of...
3828547 QUARTZ CRYSTAL TIMEPIECE  
A timepiece having a quartz crystal vibrator serving as a time standard, a liquid crystal display, and divider and driving circuits formed from COS/MOS transistors dividing the high frequency...
5420570 Manually actuatable wrist alarm having a high-intensity sonic alarm signal  
A personal alarm which is compact, portable and fashionably designed. In one embodiment, this personal alarm is structurally incorporated into a wrist watch with the alarm components arranged...
5258746 Manually actuatable wrist alarm having a high-intensity sonic alarm signal  
A personal alarm which can be manually actuated to produce a high-intensity sonic alarm signal, and which is compact, portable and fashionably designed. In one embodiment, this personal alarm is...
4110968 Control for a step motor for the measurement of time  
A step motor in a horological device is connected in a control circuit such that the motor is fed by a battery under the control of a reference oscillator, a frequency divider, a power stage and a...
5425004 Two-wire electronic module for remote digital clocks  
An electronic system is used with one or more digital clocks. The electronic system comprises a two-wire module, attached to the digital clock, for allowing each digital clock to be run and reset...
3875738 Watch with built-in audio alarm device  
This invention relates to an alarm watch adapted for delivery of voice frequency alarm signal by the use of a built-in miniaturized audio machine, preferably a cartridge endless tape type magnetic...
3999368 Circuit for an electronic timepiece  
A circuit in an electronic timepiece including a battery, a crystal oscillator, a frequency divider, a display driver and a display for reducing the magnitude of the voltage to one or more of the...
3879931 Electronic watch with an electronically operated sound producer  
An electronically powered watch is disclosed which has an audible signal producing alarm system incorporated into the watch structure. The audible signal is produced by a vibrating membrane located...
3934399 Electric timepiece incorporating rectifier and driving circuits integrated in a single chip  
A timepiece having a quartz crystal vibrator serving as a time standard, a digital display, and integrated divider and C-MOS transistor driving circuits for dividing the high frequency signal from...
3921386 Circuit for synchronizing watches driven by a coil-magnet system  
A circuit arrangement for electrically driven watches wherein the mechanical vibrator is driven by a mechanical or electronic switch which can be synchronized by the divided frequency of a quartz...
5604718 Timepiece 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...
4083179 Regulator key for watch movements  
A one-piece regulator key for watch movements includes two spaced apart prongs projecting from and integral with a common support, each prong has an inward plane surface facing and substantially...
6520674 Mechanical timepiece with posture detector  
A mechanical timepiece has a mainspring for generating a rotational force and a front train wheel for undergoing rotation in accordance with a rotational force generated by the mainspring. An...
4374377 Piezoelectric audio transducer  
A piezoelectric audio transducer adapted to produce a sound output when a vibrator which is formed by bonding a piezoelectric element to a metallic diaphragm is electrified, wherein the audio...
4266291 Electromagnetic swing device  
An electrical swing mechanism having a drive device with a rotor and a stator. The drive device carries out self-returning reciprocation with a rotation angle of the rotor. An intermittent drive...
3765163 ELECTRONIC TIMEPIECE  
An all electronic direct digital read-out timepiece employing a matrix of light emitting diodes which are user actuated to provide a display of the time in response to their actuation. A first...
6554468 Mechanical timepiece with timed annular balance rotating angle control mechanism  
A mechanical time piece has a mainspring for generating a rotational force and a front train wheel for undergoing rotation in accordance with a rotational force generated by the mainspring. An...
4079582 Electronic timepiece  
An electronic timepiece comprising a means for generating a base signal, an electromechanical transducer to convert the base signal into mechanical motion of a rotatable shaft, only a back side...
3858389 ELECTRONIC WRIST WATCH WITH ALARM  
An electronic wrist watch with an alarm has a buzzer provided on the outside of a watch case, a perforated cover which covers said buzzer, an excitation circuit which drives said buzzer, apparatus...
3842589 ELECTRONIC TIMEPIECES  
An electronic timepiece such as a wrist watch of the type employing all solid state components including an electronic or a liquid crystal output display for indicating time, utilizes a high...
5587970 Personal attack/help alarm  
A watch incorporates an alarm signal generating device with activating means for the user comprising a pin which once actuated is not readily resettable by an attacker. The alarm may be tested by...
4321699 Wrist watch with alarm  
A wrist watch with an alarm having a vibratory plate supported at a point inside the bottom housing of the wrist watch. The vibratory plate comprises a piezoelectric element, a base electrode fixed...
4297838 Electronic timepiece  
An electronic timepiece comprising a step-motor including a stator and rotor is disclosed. The timepiece is so constructed and arranged that a coil winding core of the stator is located between the...
4579464 Electronic clinical thermometer  
An envelope of an electronic clinical thermometer has an inner wall on which is mounted a vibrating element adapted to produce an audible tone. The portion of the envelope at which the vibrating...
7036977 Precision regulating device  
A precision regulating device for the regulator pointer of a timepiece includes a balance cock and an index regulator mounted on the balance cock such that the index regulator is pivotable about a...
6612734 Mechanical timepiece with stud adjustment mechanism  
A mechanical timepiece movement has a mainspring serving as a power source, a wheel train rotated by a rotational force produced by the mainspring for driving a display, and an escapement and speed...
4526477 Piezoelectric 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...
4480216 Motor driving circuits  
A motor driving circuit comprising a pulse generating circuit for generating plural types of pulse trains, a modulation pulse generating circuit connected to the pulse generating circuit, a...
4523856 Electronic 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...
5479153 Method and apparatus for displaying an object  
An advertising display including a display object, a motor connected to the display object for rotating the object about a rotation axis, and a control circuit coupled to the motor. The control...
3943701 Regulator and balance bridge arrangement for a horological device  
A horological device with a conventional balance wheel assembly, supporting bridge and hairspring with an adjustable regulator for the hairspring. The improvement comprises means for pinning the...
4270194 Electronic alarm timepiece  
An electronic timepiece includes a frequency supply for providing a relatively high frequency time base signal, a frequency converter responsive to the time base signal to provide a relatively low...
8411533 Crystal-bezel assembly unit for a timepiece and process assembly  
The invention relates to a process for assembly of a crystal and a bezel for use of the crystal as vibrating and radiating element, according to which unconnected junction zones are determined and...
7396154 Regulating element for wristwatch and mechanical movement comprising one such regulating element  
Regulating element for wristwatch comprising: a balance, a magnetic return member for returning the balance to at least one stable equilibrium position, and an escapement for maintaining the...
8770828 Oscillator system  
An oscillator system (30) of a mechanical timepiece, comprising: at least one balance wheel (35) that is free to rotate about an axis; and at least one hairspring (31) connecting the at least one...
3899700 Indexing mechanism for electric watch  
An indexing mechanism for transforming oscillatory motion produced by a motor in an electronic or electric watch to unidirectional rotation of the index wheel. The indexing mechanism includes two...
4249251 Gear train for timepiece with a stepping motor  
A stepping motor driven by a time-based electrical driving signal periodically rotates an overhung gear train directly driving the hour and minute hands mounted on a main arbor. The arbor is...
4233679 Adjustable piezoelectric transducer for a watch  
A watch includes a piezoelectric wafer mounted on a membrane held by its peripheral edge inside a watch caseback. A frequency adjustment device mounted in the caseback includes a rotatable arm...
5361241 Vib-a-wake  
A Vib-A-Wake wristwatch is provided that alerts the wearer by vibrating the entire watchband. Unlike watches that vibrate just the watch body, this provides a quieter and more effective alarm. Two...
4010602 High frequency reed time governor for a timepiece  
A high frequency reed time governor for a timepiece comprises a high frequency reed made from a temperature stable material which oscillates above 1,000 Hz and a low frequency reed which oscillates...
Matches 1 - 44 out of 44