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Match Document Document Title
8081784 Electrostatic electroacoustic transducers  
An electrostatic electroacoustic device comprising a first electrode configured to receive an audio signal, a first conductive film configured to receive the audio signal, a first electret between...
8058976 Dog bark door bell notification and personal protection system  
A security system includes a warning notification module adapted to recognize at least one of a wireless or audible signal. A door bell ringer or emergency transmission signal from a wireless...
7956764 Ambient condition detector with variable pitch alarm  
An ambient condition detector outputs an alarm comprising a tonal pattern comprising at least two distinctly different pitch tones in one embodiment of the invention. Another embodiment comprises a...
7876198 Adaptive intelligent electronic horn  
An adaptive intelligent electronic horn (100) comprises a mechanical soniferous apparatus (112), an electromagnetic coil (106), a driver circuit (104) and an oscillating circuit (102). A sensor...
7714700 Ambient condition detector with selectable pitch alarm  
The pitch of tones within tonal patterns emitted by ambient condition detector units and systems in the alarm or testing state is not always optimum to be heard by a wide range of users. An ambient...
7605687 Ambient condition detector with variable pitch alarm  
An ambient condition detector outputs an alarm comprising a tonal pattern comprising at least two distinctly different pitch tones in one embodiment of the invention. Another embodiment comprises a...
7605686 Alerting system for a communication device  
An alerting system (202) for a communication device (100) is provided. The alerting system is designed to operate in a plurality of operating modes. The alerting system includes a transducer (204)...
7564342 Audio signal system for vehicle remote locking mechanism  
An audio signal system for a vehicle remote locking mechanism provides an audio signal that is more intricate than a simple, sounding of the vehicle's horn or beep tone. Preferably, the audio...
7551061 Sound generator: a piezoelectric buzzer on a flexible, tensioned surface of an inflatable object  
A sound generator and method of projecting sound that includes a piezoelectric buzzer secured to a tensioned, flexible surface of an inflatable object, the surface being under tension in response...
7551062 Directional acoustic device  
A directional acoustic device configured for producing a directional output along an acoustic axis, including at least one transducer configured to create at least two wave trains which are...
7486173 System and method for setting parameters from control panel  
Parameters defining operational characteristics of audible, visual or audible/visual alarm indicating output devices, can be transmitted to the respective devices from common output control...
7360294 Method of assembling an inductive proximity sensor  
A method of assembling an inductive proximity sensor maintains inductive coil wound bobbins in fixed relation to an inductive core within a housing. The method includes configuring two inductive...
7292136 Audible signal device and machines using same  
An audible signal device which includes a DC to DC converter is provided. A group of work machines is further provided, including at least two work machines having electrical systems with different...
7148789 Handheld device having multiple localized force feedback  
An electronic device (100) comprises a housing (112), an input (118, 122) coupled mechanically to the housing for receiving data, an output (114, 118) coupled mechanically to the housing for...
7071816 Audible alert device and method for the manufacture and programming of the same  
An audible alert device includes a pulse width modulated signal generator. The audible alert device and method for manufacturing the audible alert device also provides resonant frequency and...
6847139 Multi-functional vibrating actuator  
An amount of movement of an air passing through a clearance G2 is adjusted by adjusting the clearance G2 by placing an outer shape surface 35 of a yoke 3 in proximity of an inner side surface of a...
6809635 Mobile terminal using a vibration motor as a loudspeaker and method of use thereof  
The present invention is a mobile terminal (102). The mobile terminal includes a vibration motor (108) which provides a silent vibration alert to a user of the mobile terminal during reception of...
6809634 Buzzer-driving apparatus  
A pulse signal, having a buzzer-driving frequency, for driving a buzzer (3) is generated by a free running timer of a timer management section of a microcomputer (1). The timer management section...
6710705 Method and apparatus for pest deterrence  
A pest deterrent device attracts the attention of a pest with ultrasonic noise and then produces a series of flashes to drive off the pest. In one embodiment, the device continuously produces...
6664892 Device inventory by sound  
When a person first enters an unfamiliar work space, it is useful for that person to know what devices are present in the space and often the person will spend the first few minutes looking around,...
6653934 Electro-magnetic audio transducer for surface-mounted devices  
An electromagnetic audio transducer for SMD applications. The transducer comprises a lead frame with external terminals, which are formed into a predetermined shape. The transducer has a case with...
6617967 Piezoelectric siren driver circuit  
A piezoelectric transducer driving circuit has a main oscillator stage, a buffer circuit, and a voltage-doubling circuit. The main oscillator stage includes a frequency-swept signal generator that...
6456193 Controlling method and apparatus of constant-frequency sound-production of electrical horn  
A controlling method and apparatus of constant-frequency sound-production for an electric horn are described. These are achieved. And comprised by a monolithic-processor. It's characterized in that...
6342831 Electronic apparatus  
Electronic apparatus incorporating a loudspeaker, wherein the loudspeaker comprises a bending wave panel member having a user-accessible surface, an electro-acoustic vibration exciter on the panel...
6339368 Circuit for automatically driving mechanical device at its resonance frequency  
A circuit for automatically driving a mechanical device at its resonance frequency is provided. To do so, the circuit detects non-resonance driving conditions of the mechanical device being coupled...
6317033 Vehicle horn  
The present invention is structured so as to prevent a fixing part from becoming an obstacle when fixing a coil bobbin for a horn for a vehicle to a case. The structure of the present invention is...
6310540 Multiple signal audible oscillation generator  
A microcontroller is used to drive a piezoelectric transducer. Certain pins on the microcontroller are indicative of selection signals. The selector can be activated either by a user directly...
6288633 Actuable audible display for bicycle handlebars  
An actuable audible display (10) for mounting on the handlebars (12) of a child's vehicle such as a bicycle includes a visual image (15) depicted on a plate-like member (16) affixed to the...
6259797 Metal base design for a speaker  
A metal base assembly for speaker that combines with a magnetic circuit to produce a fluctuating magnetic field which drives an acoustic diaphragm into vibration to produce a warning alarm. The...
6252496 Animal warning alarm device  
An animal warning alarm device includes a housing having a hollow tube projecting forwardly therefrom and an electronic sonic generator attached to the housing for providing a sonic wave that is...
6236305 Interchangeable sound effect device  
An interchangeable sound effect device (1) that incorporates and plays sound effects that have been digitally recorded on interchangeable sound cartridges (4). This device (1) is designed to be...
6188313 Device for generating sound  
A device for regenerating powerful acoustic pressure comprises at least an arrangement for generating sound while utilizing the flextensional technique, i.e. having at least one surface element...
6166623 Modular alarm assembly  
A modular audible warning device includes a primary housing which houses the core components of an audible warning device: a transducer and control circuitry. In one embodiment of the invention,...
6111497 Buzzer with Zener diode in discharge path  
A relatively high voltage is developed across a buzzer by placing a resistance in the discharge path of an buzzer, e.g., by shunting one or more Zener diodes or LEDs across a switching transistor,...
6081184 Self-protected, low emission electronic device for driving a warning horn  
A self-protected, low emission electronic device for driving a warning horn includes a coil powered from a battery through a control push-button adapted for operation by a user and included in an...
6016099 Automatically active personal alert safety system  
A problem of accounting for firefighters at a fire scene and also assuring that a firefighter has his PASS device turned on is an ever pressing issue. A tally key and holder, each with an embedded...
5990784 Schmitt trigger loud alarm with feedback  
An alarm system circuit comprises a logic array comprising a piezoelectric transducer driven by one or more Schmitt triggers. The logic array operates at substantially resonant frequency, and the...
5942815 Programmable capacitive horn switch  
A flexible capacitor is used in a switch circuit arrangement for activating a vehicle horn. The switch circuit arrangement includes an astable circuit having a flexible capacitor. The astable...
5909169 Electric bell having a mechanism for supporting electromagnetic unit  
An electric bell includes a base having two walls extended upward from the central portion for forming a casing. The walls each includes an upper portion having one or more projections. Two spring...
5903076 Vibration actuator for pager  
A vibration actuator for effecting paging is provided in which a vibrating section of an electroacoustic transducer is driven using low frequencies to collide it against a fixed section, and the...
5872506 Piezoelectric transducer having directly mounted electrical components and noise making device utilizing same  
The invention is an improved noise-making device using a piezoelectric transducer where electrical circuit components are mounted directly on the transducer itself rather than being mounted on a...
5719549 Buzzer assembly  
A buzzer assembly including a casing mounted with an ornament, an IC board mounted within the casing and carrying a battery and an IC, a buzzer mounted in the casing and connected to the IC, a...
5677679 Sound device for message decoder  
A sound device can be incorporated into a message decoder. The message decoder roughly comprises a decoder body 10, a front shield plate 20, a buzzer 22, an IC substrate 30 and an LCD 32, a back...
5568118 Failsafe module  
A warning module for use with a motor vehicle having multiple sensor inputs and multiple sensor outputs. The inputs are coupled to sensing circuits for monitoring a condition such as engine...
5416463 Method and apparatus for producing a sound from a handheld enclosure  
A portable electronic bar code reader having an improved mechanism for producing sounds. The mechanism includes two piezoelectric disks, each positioned in a separate Helmholtz resonator tuned to a...
5398024 Signal annunciators  
Signal Annunciators are presented that emit short tones upon being triggered by an electrical signal. They are intended primarily as automotive turn signal and emergency light operation indicators...
5317305 Personal alarm device with vibrating accelerometer motion detector and planar piezoelectric hi-level sound generator  
A personal alert safety system, having visual and audio safety components, in a small, lightweight, high impact casing with two compartments separated by a planar wall providing a watertight wall...
5293149 Vehicle horn with electronic solid state energizing circuit  
A vehicle horn with an electronic solid state energizing circuit is described. The horn has an electromagnet for driving a diaphragm assembly which has a resonant frequency of mechanical vibration....
5266921 Method and apparatus for adjusting vehicle horns  
Adjustment of the pulse energizing frequency and duty cycle of a vehicle horn is described. The horn is blown by a test energizing circuit with a varying pulse frequency and the and the frequency...
5264824 Audio emitting tread mat system  
A sound-giving tread mat has a bag-like tread mat, a foam rubber sheet interposed in the tread mat, one or more buzzers partly adhered on the inner surface of the lower layer of the tread mat, and...
Matches 1 - 50 out of 100 1 2 >