Transmitters Patents (Class 340/307)
  • Patent number: 11849292
    Abstract: A low power voice processing system that includes a plurality of non-audio sensors, at least one microphone system, and a plurality of audio modules, at least some of which can be configured in selected modes. A context determination module is connected to the plurality of audio modules, and further connected to receive input from the plurality of non-audio sensors and the at least one microphone system. The context determination module acts to determine use context for the voice processing system and at least in part selects mode operation of at least some of the plurality of audio modules.
    Type: Grant
    Filed: October 6, 2021
    Date of Patent: December 19, 2023
    Assignee: AMBIQ MICRO, INC.
    Inventors: Arpit Shah, Scott McLean Hanson, Stephen Howard Nease
  • Patent number: 11374757
    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for blockchain-based storage of patrol inspection proof are provided. One of the methods includes: receiving proof information of patrol inspection at a patrol inspection site; obtaining one or more operating environment parameters of the mobile terminal at a time of the patrol inspection, wherein the one or more operating environment parameters comprise at least location information and sensor data of the mobile terminal; performing credibility verification on the patrol inspection site based on the proof information, the location information, and the sensor data using an algorithm model based on labeled identification information, labeled operating environment parameters, and historical attendance information; and in response to the credibility verification being successful, uploading verification information associated with the proof information for storing in a blockchain.
    Type: Grant
    Filed: April 22, 2021
    Date of Patent: June 28, 2022
    Assignee: ADVANCED NEW TECHNOLOGIES CO., LTD.
    Inventors: Hongbo Cai, Kaiming Huang, Zhe Han, Shiqi Jiang, Lei Yang
  • Patent number: 10713437
    Abstract: Embodiments of the present invention provide a method and an apparatus for word detection in an application program. The method includes extracting a resource file from a multilingual application program installation package and converting the resource file into a text file. The method further includes disassembling the text file according to a language version to acquire a corresponding language text file; invoking a language detection tool according to the language version; and checking the language text file by using the language detection tool to identify questionable character information. The apparatus for word detection includes a file processing module, configured to extract a resource file from a multilingual application program installation package, and convert the resource file into a text file; and a disassembling module, configured to disassemble the text file according to a language version to acquire a corresponding language text file.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: July 14, 2020
    Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Rumin Ding, Juzhen Huo, Yixin Gao
  • Patent number: 10489226
    Abstract: A user interface system is provided. A first engine receives message data from managed infrastructure that includes managed infrastructure physical hardware which supports the flow and processing of information. A second engine determines common characteristics of events and produces clusters of events relating to the failure of errors in the managed infrastructure, where membership in a cluster indicates a common factor of the events that is a failure or an actionable problem in the physical hardware managed infrastructure directed to supporting the flow and processing of information. One or more situations are created that are a collection of one or more events or alerts representative of the actionable problem in the managed infrastructure. An external connection adapter is coupled to the first and second engines and configured to provide access to one or more data fields within a file.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: November 26, 2019
    Assignee: Moogsoft Inc.
    Inventors: Philip Tee, Robert Harper, Charles Mike Silvey, Andrew John Leonard, Jeffrey Ellison Townsend
  • Patent number: 9761120
    Abstract: Provided are a digital security system, method and a program that prevent erroneous reports and failed reports to improve reliability, while allowing reporting an abnormal situation in security, even in front of a suspicious person, without the suspicious person's awareness.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: September 12, 2017
    Assignee: TECHNOMIRAI CO., LTD.
    Inventor: Kazuo Miwa
  • Patent number: 9204622
    Abstract: The animal deterrent device of the present disclosure utilizes and automatic system to detect the presence of an animal in a designated area. Upon detection, the animal deterrent device releases a deterring stimulus. The deterring stimulus is intended to remove the animal from the designated area, and through continuous use, eventually training the animal from entering the designate area. The designation area can include: furniture, such as a couch, chair, table, etc; a room or portions thereof; plants, indoor or outdoor gardens; and the like.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: December 8, 2015
    Assignee: Sunbeam Products, Inc.
    Inventors: Anson Wong, Kim Wah Chung
  • Patent number: 8744401
    Abstract: An enhanced emergency notification system comprising a vehicle location device located in a vehicle, an emergency notification device located in the vehicle, a receiving/transmitting device, and an emergency responder receiving device. The vehicle location device is configured to provide data regarding a current location of the vehicle. The emergency notification device is configured to send a first signal upon a specified event, wherein the first signal includes information on the location of the vehicle obtained from the vehicle location device. The receiving/transmitting device is configured to directly receive the first signal from the emergency notification device and transmit a second signal within a range, wherein the second signal includes at least the same information as the first signal. The emergency responder receiving device is configured to directly receive the second signal from the receiving/transmitting device when within the range.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: June 3, 2014
    Assignee: Continental Automotive Systems, Inc.
    Inventor: Don Peterson
  • Patent number: 8275349
    Abstract: Methods and systems automatically allocate cellular communication network resources to emergency response personnel during emergency situations which are detected by call volumes exceeding a predetermined maximum. Access to cellular communication network resources is provided by dedicating a portion of communication channels to emergency response personnel use. By reserving whole communication channels for emergency communication purposes, emergency personnel are able to both initiate and receive calls from both other mobile devices as well as conventional landline telephone stations. Qualified emergency response personnel can preregistered their phones and be assigned personal identification numbers to enable access to allocated network resources. Users can also be registered “on the fly.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: September 25, 2012
    Assignee: Rivada Networks, LLC
    Inventor: Clint Smith
  • Publication number: 20120149344
    Abstract: Methods and systems in accordance with the present invention provide a Bluetooth, wifi or other wirelessly connected door answering system. This system may include a Bluetooth or wifi device, for example, which may be affixed to or near a door and is enabled to communicate with a software application running on a mobile telephone, personal computer (“PC”), laptop or other portable computer, or any other appropriate connected device with a processor and user interface. In some implementations, this system may allow the user to communicate with the visitor via audio, video, and/or textual methods of communication.
    Type: Application
    Filed: December 9, 2010
    Publication date: June 14, 2012
    Inventor: Sudeep Dasgupta
  • Patent number: 8149095
    Abstract: A gateway device includes a base processor which converts a signal input from an IP network to a signal which can be handled by the gateway device, and a home appliance control processor having a controller which converts the signal which can be handled by the gateway device to a control signal in compliance with the communications protocol of a home appliance to be controlled. The controller stores, on a table, information about the communications protocol, driver, controllable setting condition and status of respective appliances to be controlled in association with each other. The controller also includes a conversion functional block which converts information supplied to the control information of the communications protocol of the respective appliances to be controlled on the basis of the stored information.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: April 3, 2012
    Assignees: Oki Electric Industry Co., Ltd., Nara Institute of Science and Technology
    Inventors: Jun Hayashi, Takaaki Horibuchi, Mitsuharu Ozawa, Yoshinobu Kimura, Masahide Nakamura, Yusuke Fukuoka
  • Patent number: 7923674
    Abstract: After resetting the potential VPD of the photodiode (11) to the predetermined potential VRST, light is incident onto the photodiode (11) for a predetermined period to decrease the VPD corresponding to the amount of the incident light. After that, a declivous ramp voltage VRAMP is applied to the source terminal of the first MOS transistor (12) which is a common-source amplifier for reading out the VPD. When the voltage difference between the gate and source of the MOS transistor (12) exceeds a threshold voltage, the MOS transistor is turned on and the output suddenly decreases. If a signal having a pulse width from the starting point of the sweep of the ramp voltage to the sudden lowering point of the output is generated, the pulse width depends on the amount of the incident light. With the signal readout of this PWM method, it is possible to lower the power consumption while a wide dynamic range is maintained, and to downsize the picture cells to achieve a higher number of picture cells.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: April 12, 2011
    Assignee: National University Corporation Nara Institute of Science and Technology
    Inventors: Keiichiro Kagawa, Jun Ohta
  • Patent number: 7881839
    Abstract: An apparatus is provided that includes at least one image sensor, and at least one processor. The processor is configured to receive at least a portion of at least one image from the at least one image sensor, wherein an aim of the at least one image sensor is a function of the at least one image. The processor is further configured to generate at least one vehicle equipment control signal as a function of at least one feature extracted from at least a portion of at least one image.
    Type: Grant
    Filed: November 14, 2005
    Date of Patent: February 1, 2011
    Assignee: Gentex Corporation
    Inventors: Joseph S. Stam, Gregory S. Bush, Timothy S. DeBruine, Eric J. Walstra
  • Patent number: 7701359
    Abstract: A setting device used in an illumination control system to realize a separate control, a group control, and a pattern control is disclosed. The object of the present invention is to enable a setting operation to be performed easily, and to prevent missing. In connection with the switch arranged on a wall side, the setting device sets a separate address of the separate control, a group number of the group control, and a pattern number of the pattern control by using an infrared ray communication. On the other hand, the corresponding relationships between each switch and the relay controlling the load actually is established by mounting the setting device on the operation terminal, and connecting it to the transmission unit via the communication line. Accordingly, it is possible to perform a setting operation easily by performing two kinds of setting as one pair. Further, missing can be prevented by mounting the movable setting device on the operation terminal arranged on the wall side.
    Type: Grant
    Filed: September 21, 2005
    Date of Patent: April 20, 2010
    Assignee: Panasonic Electric Works Co., Ltd.
    Inventor: Takeshi Hatemata
  • Patent number: 7688178
    Abstract: A remote start controller is mounted on a vehicle, which includes a keyless entry device for controlling a locking action of doors of the vehicle in response to a user's operation with respect to a lock button of a transmitter. The remote start controller includes a CPU. Upon detecting that the lock button of the transmitter is operated in a first predetermined way, the CPU causes an engine of the vehicle to start.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: March 30, 2010
    Assignee: Fujitsu Ten Limited
    Inventors: Masaki Koike, Minoru Yoshimura, Yasuomi Kimura
  • Patent number: 7683800
    Abstract: A door bell notification and personal protection system includes a warning notification module adapted to recognize at least one of a door bell notification from a door bell ringer or emergency transmission signal from a wireless transmitter and thereafter provide a recognition signal to a microprocessor. The microprocessor is adapted to retrieve dog barking sounds stored in a memory and provide the dog barking sounds to at least one of an amplifier or radio frequency transmitter after the microprocessor receives the recognition signal from the warning notification module. Dog barking sounds can be broadcasted using the wireless transmitter. A delay module can enable processing with a delay time after first receipt of the recognition signal. A random module can enable random retrieval of various dog barking sounds from memory for processing. A time out module can disable operation of the microprocessor at a set time after recognition signal receipt.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: March 23, 2010
    Inventors: Melisendro T. Ortiz, Luis M. Ortiz
  • Patent number: 7313540
    Abstract: A system and method for electronically communicating investment plan information between money managers and issuers of investment contracts to facilitate plan inquiry and plan bidding processes. An import specification is defined, identifying database format characteristics of investment plan information stored in a first database. Data fields are mapped from the first database to data fields in a second database to create a data import map, where the data fields in the second database are predefined data fields. Investment plan information is imported into the predefined data fields of the second database according to the import specification and data import map. The resulting imported information is transferred to a central database accessible by investment contract sellers who are authorized by the investment contract buyers to receive the investment plan information.
    Type: Grant
    Filed: March 8, 2000
    Date of Patent: December 25, 2007
    Assignee: Hueler Companies
    Inventors: Kelli Hustad Hueler, Janet Jasin Quarberg
  • Patent number: 7006792
    Abstract: A portable wireless andon communication system and method for use in manufacturing, assembly and other industrial settings. A transmitter station and receiver station are set up for immediate use by simply connecting each to a standard power source. A user needing assistance manually activates a switch at the transmitter station, thus turning on a light and transmitting a corresponding signal to the receiver station. The receiver station receives the signal and turns on a corresponding light and tone generator. The tone generator and light alert indicate to the proper parties the request for a response. A responding party scans transmitter stations for the corresponding light and provides assistance. The switch may be a sensor activated by a change in state indicating that assistance is required. The portable system is easily reconfigured if necessitated by layout changes in a manufacturing line.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: February 28, 2006
    Inventor: Robert H Wilson
  • Patent number: 6727815
    Abstract: A fire alarm system may comprise a control center, a wired communication pathway connected to the control center, and a relay station having a receiver and a signal evaluation circuit connected to the communication pathway. First decentralized alarm boxes may be wired to the communication pathway, and second decentralized alarm boxes may communicate with the receiver of the relay station via a wireless channel, wherein the first and second alarm boxes, in case of fire, produce an alarm signal which is transmitted to the control center via the communication pathway. A set of separate coupling modules may be disposed in the relay station and may be disconnectably connected to the signal evaluation circuit and the communication pathway via appropriate connecting elements, the coupling modules being designed for different communication modes.
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: April 27, 2004
    Assignee: Job Lizenz GmbH Co., KG
    Inventor: Gerhard Röpke
  • Publication number: 20030164753
    Abstract: A signage system for a traffic area, the traffic area comprising visually-identifiable boundary markers, the signage system having sign means at the boundary markers, the sign means visually viewable by an occupant of a vehicle adjacent the boundary markers. The signage system further having interaction apparatus at the parking lot for providing communication between a vehicle occupant and an entity remote from the traffic area. The signage system wherein the sign means has at least one electronic display apparatus for presenting information to a person at the traffic area.
    Type: Application
    Filed: March 4, 2002
    Publication date: September 4, 2003
    Inventor: Christopher Gongolas
  • Patent number: 6532447
    Abstract: An electronic device, e.g. a mobile telephone, includes speech recognition means for controlling the operation of the device in response to a voice command. The device includes a proximity sensor e.g. a capacitive, inductive, or IR-red proximity sensor, for providing a control signal indicative of whether an object is in proximity of the device, and control means for controlling the voice controlled operation of the device in response to the control signal.
    Type: Grant
    Filed: June 6, 2000
    Date of Patent: March 11, 2003
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Nils Christensson
  • Patent number: 6487375
    Abstract: The invention provides automatic machinery with the capability to communicate to an operator or technician or other machine user with a description of a machine condition, such as, for example, a machine problem, if the machine requires attention.
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: November 26, 2002
    Assignee: Xerox Corporation
    Inventors: Gabriel E. Ferrer, Bernard Leibman
  • Publication number: 20010052848
    Abstract: A personal security system including a base unit which communicates emergency voice information to a surrounding area through and amplified speaker/siren system. The security system includes a held-held remote “panic button” unit to allow activation of an amplified call for help. The unit uses an RF transmitter and receiver to trigger a digitally recorded voice/siren when the panic button is pushed. Once triggered, the pre-recorded voice and or siren alarm will sound continuously until positively reset. The base unit of the present invention is suitable for installation inside a vehicle.
    Type: Application
    Filed: May 7, 2001
    Publication date: December 20, 2001
    Inventor: Vernon Lewis
  • Patent number: 6060979
    Abstract: A call box apparatus includes a controller unit, a radio frequency audio transceiver unit controlled by the controller unit, and a sensor assembly connected to the controller unit for controlling operation of the controller unit. A power supply assembly, an audio storage assembly, an output speaker unit, and an input microphone unit are connected to the controller unit. A housing assembly houses the controller unit, the radio frequency audio transceiver unit, the sensor assembly, the power supply assembly, the audio storage assembly, the output speaker unit, and the input microphone unit. The housing assembly includes a hinged door. The housing assembly includes a first housing portion which supports the door, and a second housing portion which supports the first housing portion. The door includes a door lock assembly. The sensor assembly includes an open-door sensor and a key-operated switch assembly. The power supply assembly includes a rechargeable battery.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: May 9, 2000
    Inventor: Gary Eichsteadt
  • Patent number: 6052052
    Abstract: An alarm security system is provided that interfaces a standard communications system with the monitoring of variety of remote sensors resulting in a flexible portable silent alarm. The sensor alarm conditions are communicated, with prerecorded voice information, directly over pre-programmed standard radio communications channels to on-duty security personnel. The equipment responds to commands sent, along with a correct identification code, over the same standard communications channels. Remote arming, disarming, status, activation of listening devices, and other remote functions are therefore possible. The alarm security system includes a remote wireless security electronics unit that is powered by battery, solar panel, or AC. The remote electronics unit includes monitoring of sensors in a plurality of separate zones. Each zone having a separate prerecorded message, appropriate for that zone, that can be transmitted directly to on-duty security personnel.
    Type: Grant
    Filed: August 29, 1997
    Date of Patent: April 18, 2000
    Assignee: Navarro Group Limited, Inc.
    Inventor: Terry J. Delmonaco
  • Patent number: 5828292
    Abstract: A 3-button emergency signal via incorporated transmitter device including a housing with 3 push button switches situated thereon. Also included is a transmitter and a reset module positioned within the housing and in communication with the switches. The transmitter is adapted to transmit a unique transmission signal via free space for receipt by a specific emergency facility upon the depression of a designated button. The present invention thus allows the receiving emergency facility to locate the user and reactivate the device for the further use by transmitting a unique signal via the reset module incorporated in this device.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: October 27, 1998
    Inventor: Viatcheslav A. Kokhan
  • Patent number: 5761534
    Abstract: A client interface supporting a plurality of peripheral channels and a network channel. The peripheral channels include a maintenance channel, message input channel, message output channel, express channel and several DMA channels. The client interface routes packets from the network to the peripheral resources and prioritizes the dispatching of packets onto the network. Express packets and message packets are given priority over DMA type packets. Priority to dispatch is rotated among the DMA channels.
    Type: Grant
    Filed: May 20, 1996
    Date of Patent: June 2, 1998
    Assignee: Cray Research, Inc.
    Inventors: Eric P. Lundberg, Joseph M. Placek
  • Patent number: 5532677
    Abstract: A variable distance marker system includes a display mounted in a housing and attached to electronics circuits having a light detector for receiving externally generated light signals. A rechargeable battery and a solar cell array are interconnected for supplying power to the display and circuits. An antenna is mounted in the housing for receiving RF signals and a remote RF transmitter is controllable to transmit an actuating signal to the antenna for altering the display. A remote hand-held light generator is controllable to generate a beam of light onto the light detector for controlling the digits displayed.
    Type: Grant
    Filed: July 1, 1994
    Date of Patent: July 2, 1996
    Inventor: John E. Miller
  • Patent number: 5339339
    Abstract: Process for carrying out an inspection or monitoring round of a nuclear site (5) consisting of recording in a central computer (22) connected to a radiofrequency transmitter/receiver or transceiver (24) a combination or sequence of different collection or reading points (12) grouping sensors (10) constituting the round to be performed. This sequence is copied again into a memory of a portable microcomputer (26) carried by the watchman during the round and connected to a radiofrequency transceiver (28). Each connection point (12) is validated and this validation is transmitted to the central computer (22). The sensors are checked and any abnormal condition is indicated to the central computer (22). All the checks carried out are recorded in the portable microcomputer (26) and copied again at the end of the round into a central computer (22) in such a way that they can be processed.
    Type: Grant
    Filed: September 22, 1993
    Date of Patent: August 16, 1994
    Assignee: COGEMA - Compagnie Generale des Matieres Nucleaires
    Inventors: Jean-Louis Petitclerc, Jean-Louis Ricaud
  • Patent number: 4928099
    Abstract: Each of a large number of geographically distributed call boxes asynchronously transmits unique code-identified digital messages for taxicab request, vanadalism alarm, low power, or on-line status by Frequency Shift Keyed Bi-phase Modulated radio. To ensure receipt of any simultaneous, conflicting, messages at a central receiver, each call box repeats transmission of its messages three times at intervals. For human-initiated taxicab requests the call box itself feeds back a "cab dispatched" visual indication to satisfy the requestor after a predetermined delay. However, this indication actually represents only a highly probable occurrence and is not generated in response to an actual dispatch at a central location. The centrally received messages are processed by digital computer to eliminate redundance, display requests to a dispatcher of service, an log all requests and responses thereto.
    Type: Grant
    Filed: March 1, 1988
    Date of Patent: May 22, 1990
    Inventor: Donald L. Drake
  • Patent number: 4633231
    Abstract: Apparatus for monitoring the time duration in which a visitor remains in a defined region on the way from a visited place to another place, more particularly from the entry to the visited place and back, freely and without supervision. At the entry place, the visitor receives a transmitter with a timing member. After termination of a given time duration which corresponds to the normal travelling time of the visitor between the visited places, the transmitter transmits an individual identification signal which is received by a central receiver and is decoded. It can be immediately ascertained which visitor dwells for too long a time within the defined region so that searching or controlling measures can be initiated.
    Type: Grant
    Filed: February 27, 1985
    Date of Patent: December 30, 1986
    Assignee: U.S. Philips Corporation
    Inventor: Ernst A. Kilian
  • Patent number: 4630035
    Abstract: An alarm system for sensing an alarm condition within a relevant alarm area includes one or more portable alarm units for sensing an alarm condition. Each alarm unit includes a radio frequency transmitter for identifying the alarm unit and a secondary, audio, transmitter for defining the relevant alarm area. The system also includes a plurality of transponders. Each transponder includes a primary receiver for receiving a radio message from an alarm unit and a secondary receiver for receiving an audio signal from the alarm unit. A real-time clock in each transponder provides the elapsed time between receipt of a primary and receipt of the secondary alarm signals. The alerted transponders then transmit to a control unit a transponder address code, an alarm unit identification code and an elapsed time indicia. Based on the address code or codes and the minimal elapsed times detected by the control unit, the relevant alarm area can be determined.
    Type: Grant
    Filed: January 4, 1985
    Date of Patent: December 16, 1986
    Assignee: Motorola, Inc.
    Inventors: John I. Stahl, Burton J. Fischel, Frank J. Will
  • Patent number: 4389635
    Abstract: An attachment which converts a single station, spring powered, temperature sensitive, fire alarm protection device into a remote signalling heat detector for a central fire alarm system, without affecting the internal apparatus of the alarm device or the environmental protection of such internal apparatus. The attachment includes a pivotally mounted member having a shield arm interposed between a magnet and a reed switch, and a lever arm which interacts with a winding key on the alarm device to move the shield arm from between the magnet and reed switch when the alarm is actuated. This movement of the shield arm permits the magnetic force of the magnet to activate the reed switch. The reed switch is connected by wire or radio link to a central monitor. Actuation of the reed switch, in response to actuation of the alarm device, produces an alarm signal at the central monitor.
    Type: Grant
    Filed: November 28, 1980
    Date of Patent: June 21, 1983
    Assignee: A-T-O, Inc.
    Inventor: Edward L. Gallagher
  • Patent number: 4296408
    Abstract: A location transmitting system for use by one or more guards in a security system. Encoders are located at predetermined reporting locations which have no power supplies. Each guard carries a walkie-talkie radio transmitter which he places in a receptacle at the reporting location, energizing the encoder through external terminals in the receptacle which mate with external terminals of the walkie-talkie and its power supply.
    Type: Grant
    Filed: April 14, 1980
    Date of Patent: October 20, 1981
    Assignee: Portronix Communications Inc.
    Inventor: Jules K. Neuringer
  • Patent number: 4157540
    Abstract: The wireless alarm system comprises a portable wireless transmitter assembly adapted to be concealed on the person, a radio receiver and signal decoder for receiving a coded wireless signal transmitted by the radio transmitter, an adjustable timer and signal relay means for relaying the wireless alarm signal received by the radio receiver on to personnel alerting means a predetermined period of time after the wireless alarm signal is received by the radio receiver, and personnel alerting means activated by the alarm signal received from the adjustable timer and signal relay means.
    Type: Grant
    Filed: July 13, 1976
    Date of Patent: June 5, 1979
    Assignee: Anatronics Corporation
    Inventor: Stefan Oros
  • Patent number: 4017844
    Abstract: A multi-zone fire protection system in which each protected zone is provided with a detector for producing an alarm signal in response to the presence of combustion products, a source of fire extinguishing agent, and a pull box station manually operable to induce discharge of the extinguishing agent into the protected zone. Each pull station possesses a signal lamp that can be energized to signal an abnormal condition to personnel present in the area. A signal lamp in a given zone is energized via a central control panel in response to an alarm signal from a detector associated with that zone, thereby clearly indicating to personnel at hand the specific zone in which a fire has been detected.
    Type: Grant
    Filed: July 14, 1975
    Date of Patent: April 12, 1977
    Assignee: Walter Kidde & Company, Inc.
    Inventors: Enio Facchini, Carl I. Swanson