Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 7821380 | Compact warning light A warning light comprising a base member, a dome removeably connected to the base member, and at least one light module having a top and bottom surface positioned within the dome with the top surface being positioned against the inside of the top surface of said dom... | 10/26/2010 |
| 7764165 | Locatable information sound device and method A device is described to provide a localisable information signal. The device is adapted to emit sequentially a locating sound signal comprising broad band sound and an information sound signal comprising at least verbal information. A signal generated by such a dev... | 07/27/2010 |
| 7443285 | Enhanced audio feedback for vehicle security systems A vehicle security system comprises a security module adapted to detect an event, a memory for storing a composition, and a processor coupled to the security module, wherein upon detecting the event the processor selects the composition from the memory and triggers ... | 10/28/2008 |
| 7356603 | Integrated system of loads with multiple public awareness functions A signaling system may include two subsystems that share a common wiring backbone and provide public awareness functions. The two subsystems may be a public address system and a master/slave clock system. Remote rooms at the tail end of the wiring backbone include a... | 04/08/2008 |
| 7292141 | Audible alarm enhancement for monitoring systems An alarm system for a computer-based monitoring system such as a patient medical monitoring system is provided. The system comprises a main processor connected to a first speaker, a second processor communicatively connected to the main processor for exchange of mes... | 11/06/2007 |
| 7256685 | Applause device An applause device including a sound generator capable of generating at least one applause sound. The sound generator preferably can generate at least one sound which can indicate approval or disapproval, such as clapping, hollering, whistling, booing, and hissing. ... | 08/14/2007 |
| 7245171 | Voltage clamping circuit for a bicycle dynamo A voltage clamping circuit comprises a first high current gain circuit adapted to receive current from the first line; and a first switching circuit that turns on the first high current gain circuit to flow current away from the first line when the first switching c... | 07/17/2007 |
| 7211976 | Control and motor arrangement for use in model train A control and motor arrangement in accordance with the present invention includes a motor configured to generate a locomotive force for propelling the model train. The control and motor arrangement further includes a command control interface configured to receive c... | 05/01/2007 |
| 7205493 | Pressure sensitive horn switch A horn activation system for a lightweight utility vehicle can comprises a pressure sensitive horn switch (PSHS) operably connected to a horn button. The horn button is operable with the PSHS such that pressing the horn button compresses the PSHS. The horn activatio... | 04/17/2007 |
| 7158040 | Environmental condition detector with audible alarm and voice identifier Due to the presence of various environmental condition detectors in the home and businesses such as smoke detectors, carbon monoxide detectors, natural gas detectors, etc., each having individual but similar sounding alarm patterns, it can be difficult for occupants... | 01/02/2007 |
| 7151458 | Discreet bed-wetting alarm and method of use thereof A discreet bed-wetting alarm comprising a controller, earpiece with earphone, and interconnecting cable. The controller comprises a clock/processor with timer, a display, a sound signal/tone generator, an amplifier programmed to provide an increase in sound volume l... | 12/19/2006 |
| 7142097 | Enhanced audio feedback for vehicle security systems A vehicle security system comprises a security module adapted to detect an event, a memory for storing a composition, and a processor coupled to the security module, wherein upon detecting the event the processor selects the composition from the memory and triggers ... | 11/28/2006 |
| 7132761 | Universal fleet electrical system The universal fleet electrical system is an integrated system for supplying electrical power to aftermarket accessories, particularly to police vehicles and other emergency vehicles. The system includes a central power distribution panel, which includes a fuse panel... | 11/07/2006 |
| 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 decibel peaking capabilities. Resonant frequency and decibel peaking routin... | 07/04/2006 |
| 7064943 | Boost-type switching power device A boost-type switching power device which obtains a dc output by connecting a rectifying diode to the output side of an inductance element, connected in series to a main switching element, the device including: a control circuit which controls the operation of the m... | 06/20/2006 |
| 6977495 | Detection circuitry for surgical handpiece system Various circuit configurations for use in switch assembly used in a surgical hand piece system are provided. The circuit configuration provide a number of functions such as permitting the presence and direction of conductivity to be detected. The circuit configurati... | 12/20/2005 |
| 6972697 | Controller for automatically manipulating a horn signal for navigational purposes A system and method for a horn controller is provided that automatically operates a vessel's horn as a foghorn. The horn controller automatically causes the vessel's horn to sound according to the proper foghorn sounding schedule. The horn controller is designed to ... | 12/06/2005 |
| 6933838 | Informing sound generation method and apparatus for vehicle Detection is made of an activated direction of a vehicular operator device capable of being activated in at least two directions. In response to activation, in a first direction, of the operator device, informing sound is generated which varies over time with a firs... | 08/23/2005 |
| 6928350 | Control console for an automobile A control device for controlling a plurality of user appliances is disclosed. The device is ergonomically designed to enforce hand placement and eliminate the problem of finding the correct switch to manipulate. Additionally, the controls on the device have software... | 08/09/2005 |
| 6879848 | Method and apparatus for alerting an operator of an incoming cellular or portable phone call A method and apparatus for notifying a user of an incoming cellular telephone call are provided. The apparatus includes a cellular telephone body having at least a back surface, a first transducer positioned within said cellular telephone body perpendicular to the b... | 04/12/2005 |
| 6819227 | Acoustic signal generator, and method for generating an acoustic signal An acoustic signal generator, and a method for generating an acoustic signal are described. The acoustic signal generator has a membrane that can oscillate, a deflection sensor for detecting any deflection of the membrane, an exciter configuration that is coupled to... | 11/16/2004 |
| 6778078 | Integrated emergency signaling load management system An emergency signaling system with integrated load management functionality is provided wherein the load management circuitry is alternatively operable in programming and operating modes. The system includes a keypad, control head, control unit and a plurality of si... | 08/17/2004 |
| 6774798 | Personal alarm system A personal alarm system for efficiently alerting individuals nearby that the user is possibly in danger. The personal alarm system includes a power source, a switch unit, and a speaker electronically connected to a control unit and positioned within an apparel membe... | 08/10/2004 |
| 6753763 | Vehicle security system siren to supplement light flash and associated methods A vehicle security system includes at least one security sensor and a security controller switchable between armed and disarmed modes. The vehicle includes a horn being electrically operable, a horn switch permitting selective occasional operation of the horn by a u... | 06/22/2004 |
| 6750759 | Annunciatory signal generating method and device for generating the annunciatory signal When a dividing ratio data is written in a counter/timer register 530, a counter/timer circuit 534 divides a frequency of an oscillation signal of the oscillator 532 as much as the dividing ratio data. When an output enabling data is written in ... | 06/15/2004 |
| 6686833 | Compound acoustic actuator drive circuit and portable information terminal In a signal generation circuit for a compound acoustic actuator that generates a sound and a vibration in response to a frequency of a signal input to the compound acoustic actuator, the signal generation circuit comprising a plurality of signal data stor... | 02/03/2004 |
| 6646548 | Electronic siren An electronic siren emulates the sound of a mechanical siren using a dynamic algorithm and look up tables to generate a series of wave sets, each wave set including one fixed frequency wave and one variable frequency wave. A micro controller stores the al... | 11/11/2003 |
| 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 can be configured to provide different outputs to the buff... | 09/09/2003 |
| 6538565 | Applause device An applause device includes a sound generator capable of generating at least one applause sound. The sound generator preferably can generate at least one sound which can indicate approval or disapproval, such as clapping, hollering, whistling, booing, and... | 03/25/2003 |
| 6522244 | Children's ride-on vehicle with audiovisual device A ride-on vehicle for children comprising a body with a seat, a plurality of wheels rotatably coupled to the body, a steering mechanism operable by a child seated on the seat, and a frame forming a portion of the body. The frame includes a plurality of in... | 02/18/2003 |
| 6433673 | Digital enunciator, process and communication system employing same A receiver in a communication system is coupled to a transmission channel for receiving communication signals transmitted over a transmission channel. The receiver includes signal receiving electronics for receiving communication signals directed to the r... | 08/13/2002 |
| 6433677 | Vehicle security system siren and associated method A vehicle security system includes a siren for sounding a siren security alarm to supplement a horn security alarm responsive to operation of the horn in a predetermined pattern, such as by a security controller. The siren may not sound the siren security... | 08/13/2002 |
| 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 to and driven by such circuit. Based on such detection, t... | 01/15/2002 |
| 6323778 | Alarm system for a toilet seat An alarm system for signaling when the toilet seat of a toilet is left in an upright position in relation to a rim of the toilet bowl. The alarm system for a toilet seat includes a housing for mounting the alarm system to the toilet bowl. A sensor is prov... | 11/27/2001 |
| 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 circuit provides a feedback loop to sustain the oscillation... | 11/23/1999 |
| 5831518 | Sound producing method and sound producing apparatus In a sound producing apparatus and a sound producing method of this invention, at least underlying sound representing situations of the place within virtually actualized space and ornamental sound corresponding to object within the virtually actualized sp... | 11/03/1998 |
| 5831515 | Electronic siren apparatus including an integrated handheld microphone and control handle A two-piece electronic siren apparatus including an integrated handheld microphone and control handle and a receiver/amplifier box is provided. The microphone and control handle permits handheld control of emergency light functions, siren functions, and a... | 11/03/1998 |
| 5714926 | Method and means for preventing trespassing Method and means for preventing trespassing and/or unauthorized staying in an area outdoors or indoors, e.g. in a building, part of a building, in vehicles, vessels, etc., sound signals with periodically varying frequencies with the variation of the frequ... | 02/03/1998 |
| 5675311 | Frequency sweeping audio signal device An audio signal is generated that sweeps from a lower frequency to a higher frequency in a substantially linear function. The circuit used to produce this sweeping audio frequency has a stable power supply, a square wave oscillator, a ramp generator, a vo... | 10/07/1997 |
| 5638043 | Warning apparatus The present invention relates to a warning apparatus which can continuously monitor a normal condition wherein an alarm sound can be produced. When a high level judgement signal (W) indicating safety is input, an inaudible frequency signal is supplied fro... | 06/10/1997 |
