Recherche Images Maps Play YouTube Actualités Gmail Drive Plus »
Connexion
Les utilisateurs de lecteurs d'écran peuvent cliquer sur ce lien pour activer le mode d'accessibilité. Celui-ci propose les mêmes fonctionnalités principales, mais il est optimisé pour votre lecteur d'écran.

Brevets

  1. Recherche avancée dans les brevets
Numéro de publicationUS3439320 A
Type de publicationOctroi
Date de publication15 avr. 1969
Date de dépôt21 sept. 1967
Date de priorité21 sept. 1967
Numéro de publicationUS 3439320 A, US 3439320A, US-A-3439320, US3439320 A, US3439320A
InventeursJames E Ward
Cessionnaire d'origineRelton Corp
Exporter la citationBiBTeX, EndNote, RefMan
Liens externes: USPTO, Cession USPTO, Espacenet
Personnel location system
US 3439320 A
Résumé  disponible en
Images(1)
Previous page
Next page
Revendications  disponible en
Description  (Le texte OCR peut contenir des erreurs.)

April 15;1969

J. E. WARD PERSONNEL LOCATION SYSTEM Filed Sept. 21, 1967 l VVENTOR.

3,439,320 PERSONNEL LOCATION SYSTEM llames E. Ward, Glendora, Calif., assignor to Relton Corporation, Arcadia, Calif., a corporation of California Filed Sept. 21, 1967, Ser. No. 669,610 lnt. Cl. G01s 3/80 US. Cl. 340-16 7 Claims ABSTRACT OF THE DISCLOSURE of the location of this person at a designated area. Preferably, the indication is maintained until the person moves to a different area and actuates his transmitter there.

Background of the invention This invention relates to communication between a plurality of persons and a central point and, more particularly, to an indication system for locating personnel at a large facility.

At large business establishments, hospitals, construction sites, and other extended areas of activity, provision must be made for communicating with personnel that move about the area in the course of their work. Most known systems for accomplishing this type of communication have disadvantages of one sort or another that must be taken into consideration and weighed when selection of a particular system is made. For the most part, the person sought is paged in one way or another.

Probably the most commonly employed paging system is a public address network in which the name of the person sought is .announced over loudspeakers distributed throughout the entire facility. Communication in this type of system is not selective, i.e., the pages are heard by everyone within the facility regardless of whether or not a person is affected by the announcement being made. Continual paging over such a public address network often disturbs the personnel and therefore reduces the efficiency of their activities.

Other paging systems are selective and therefore do not disturb personnel who are not concerned with the page. These systems employ one or more radio frequency transmitters distributed throughout the facility. The transmitters are capable of producing one of a plurality of different frequencies. Each person to be paged has in his possession a radio receiver tuned to a unique one of these frequencies. To communicate with a person, his unique frequency is broadcast by all the transmitters, thereby producing only in his receiver an audible indication that can be heard by him. This type of system requires a portable source of electrical energy in each receiver on which a current drain is continually imposed as long as the receiver is in a stand-by condition. When the energy source is expended, it must be replaced or recharged in order to maintain its operation.

on the concept that personnel are located in response to signals sent out by them each time they move to a different nited States Patent O designated area at a facility. Specifically, each person has in his possession a transmitter capable of producing a locating signal having a unique frequency. Each area or room at the facility to be designated is provided with a transducer or receiver capable of sensing all the unique frequencies assigned to the personnel. The transducers are all coupled to a centrally located display panel capable of indicating the designated area in which each person is located. When a person actuates his transmitter, thereby sending a locating signal to the transducer in the area or room in which he is located, control circuitry determines which unique frequency is being received at the central location and which transducer is sensing this unique frequency. An indication of the location of the person sending the signal at one of the designated areas is then produced on the display panel responsive to the control circuitry. Most advantageously, this indication is maintained on the display panel until the person sends out a signal from his transmitter in a diiferent designated area, at which time a new indication replaces the original one.

Preferably, the locating signals are produced by ultrasonic sound transmitters. In such case, the system produces no audible sounds that may disturb other personnel, and no portable sources of electrical energy are required for the units in the possession of the person to be located. The energy for actuating the ultrasonic transmitter could be provided by the person operating the transmitter in the form of a hammer blow on an ultrasonic resonant tuning fork or the like.

Brief description of the drawing The features of a specic embodiment of the invention are illustrated in the drawing, in which:

FIG. 1 is a schematic diagram in block form of a communication system incorporating the principles of the invention; and

FIG. 2 is a circuit schematic diagram of a portion of the display panel control circuitry of FIG. 1.

Description of a specific embodiment In connection with FIG. l, a personnel location system is described that indicates the location of ve persons designated JIM, MAX, BUD, JOE, and BILL at one of three areas of a facility designated ROOM 1, ROOM 2, and ROOM 3. Each person is provided with a transmitter capable of producing an ultrasonic sound signal having a unique frequency. The ultrasonic frequencies are designated f1, f2, f3, f4, and f5. Preferably, the ultrasonic transmitters are of the type that produce ultrasonic signals in response to a hammer blow so that no portable source of electrical energy is required in the transmitters. Such ultrasonic transmitters are in common use to control remotely commercial television receiver sets in the home. Instead, a portable power source could be used to give a constant signal or a selectively intermittent signal. The areas encompassed by ROOM 1, ROOM 2, and ROOM 3 are represented schematically in FIG. 1 by blocks 10, 11, and 12, respectively. Ultrasonic transducers or receivers 13, 14, and 15, which each have a band width sufficiently wide to sense all of the frequencies f1 through f5, are provided in ROOM 1, ROOM 2, and ROOM 3, respectively. Transducers 13, 14, and 15, which convert ultrasonic sound energy to electrical energy, are coupled through ampliers 16, 17, and 18, respectively, to centrally located display panel control circuitry 19. A display panel 20 in the form of a grid with rows and columns of indicators, such as lamps, is also provided at the centrally located point. Each indicator on display panel 20 is situated in a square area of the grid. One horizontal row of indicators is provided for each room to be designated,

and one vertical column of indicators is provided for each person to be identified.

When a person enters a room, he actuates his transmitter, thereby sending an ultrasonic signal to display panel control circuitry 19. This is illustrated in FIG. 1 by an ultrasonic transmitter 21 in ROOM 1 that produces an ultrasonic sound signal at frequency f1 assigned to JIM. The ultrasonic sound signal is represented at 22. Display panel control circuitry 19 senses which one or more of the frequencies f1 through f5 is being sent and which transducer is receiving this frequency. On the basis of this information, the location of the person involved at a designated area is determined and indicated on display panel 20 responsive to control circuitry 19. Following the assumption that transmitter 21 is actuated in ROOM 1, a lamp is lit in the upper left-hand square on display panel 20, designated 23. The lamp remains lit in square 23 until transmitter 21 is actuated in a different room, at which time a new indication replaces the indication in square 23. The central operator can then inform interested people as to JIMs precise whereabouts or can communicate directly with him without disturbing anyone other than the occupants of his room.

In FIG. 2, a schematic circuit diagram of that portion of display panel control circuitry 19 associated with ROOM 1 is shown. The same circuitry would be repeated for ROOM 2 and ROOM 3. Lamps corresponding to each of the ve squares in the row for ROOM 1 are energized under the control of relays. The control coil of each relay is designated by a capital letter, and its contacts are designated by small letters corresponding to the capital letters with different subscripts Where plural contacts are involved. In accordance with well-accepted practice, normally open contacts are designated by a cross and normally closed contacts are designated by a slash. Relay coils A, B, and C are labeled SR and SO to designate that they are slow operating and slow releasing relays. The remaining relays are assumed to operate and release instantaneously. Three out of the five indicator lamps for ROOM 1, designated 30, 31, and 32, and the associated control circuitry are shown in FIG. 2. Identical circuitry would be employed for the other lamps associated with ROOM 1. The output of amplifier 16 (FIG. 1) is connected through a filter 33 to relay coil A, through filter 34 to relay coil B, and through filter 35 to relay coil C. Filters 33, 34, and 35 are selective filters having narrow bands that will pass only the frequency assigned to the person identified by the corresponding column of display panel 20, namely frequencies f1, f2, and f5, respectively. On the application of a signal at frequency f1, relay coil D operates immediately to complete a circuit through contact d to relay coil X. As described in detail below, the operation of relay coil X serves to deenergize any other lamps in the column of display panel 20 identifying JIMs location. After a short delay, relay coil A operates. Consequently, contact a3 opens to interrupt the energizing circuit for relay coil D, so that relay coil X releases. Contact a1 closes to complete a circuit from a source 36 of positive potential to lamp 30. Contact a2 closes to complete a latching circuit from source 36 to relay coil A. As a result, relay coil A remains latched after the signal received from ROOM 1 terminates. Relay coil A remains latched and indicator lamp 30 remains lit until transmitter 21 (FIG. 1) sends an ultrasonic signal to the transducer in a different room.

The outputs of the filters corresponding to filter 33 that select the frequency f1 from the transducers leading from the other rooms are also connected to relay coil X through a normally open contact controlled by a coil corresponding to coil D. As in the case of lamp 30 and relay coil A, relay coil X has a normally closed contact in the latching circuit for the lamp energizing the relay coils for ROOMS 2 and 3. Whenever a signal at frequency f1 is received from the transducers in any of the rooms, relay coil X is energized for a short period of time as described above, thereby opening the latching circuit for the lamps in the corresponding column. Accordingly, any previously energized lamp in the column is extinguished and the lamp in the row corresponding to the transducer from which the signal is being received becomes lit.

The control circuitry associated with the lamps in the other columns operates in the same manner. Relay coils B and C correspond to relay coil A; relay coils E and G correspond to relay coil D; and relay coils Y and Z correspond to relay coil X.

What is claimed is:

1. A communication system comprising;

a plurality of portable transmitters each generating a unique signal;

a plurality of fixed receivers positioned to cover different areas at a facility, each receiver being capable of sensing any of the unique signals generated by the transmitters;

a display capable of individually indicating the receivers and the transmitters; and

means connected between the plurality of receivers and the display for indicating on the display which receivers are sensing signals and which transmitters are producing the signals sensed by the respective receivers.

2. The communication system of claim 1, in which the transmitters each generate an ultrasonic sound signal and the receivers are ultrasonic transducers capable of converting ultrasonic sound energy into electrical energy.

3. The communication system of claim 1, in which the transmitters each generate a signal having a unique frequency and the receivers are capable of sensing signals having the frequencies of all the transmitters.

4. The communication system of claim 1, in which the indicating means retains an indication that a receiver is sensing the unique signal produced by a transmitter until another receiver senses the unique signal produced by the same transmitter, causing the indicating means to indicate that the other receiver is sensing the unique signal.

5. The communication system of claim 1, in which the display has a plurality of indicators equal in number to the product of the number of transmitters and the number of receivers and the indicating means comprises control circuitry that energizes the indicator corresponding to the receiver sensing a signal and the transmitter sending the sensed signal.

6. The communication system of claim 1, in which the display forms a grid having a number of areas equal to the product of the number of transmitters and the number of receivers, an indicator being located in each area, and the indicating means energizes the indicator corresponding to the receiver sensing the signal and the transmitter sending the sensed signal.

'7. The communication system of claim 1, in which the display forms a grid of areas arranged in rows and columns, the grid has a column corresponding to each transmitter and a row corresponding to each receiver, an indicator is located in each area, and the indicating means energizes the indicator in the area Where the row that corresponds to the receiver sensing a signal and the column that corresponds to the transmitter generating the sensed signal intersect.

References Cited 3,238,503 3/1966 Uitermark et al. 340-311 X RICHARD A. FARLEY, Primary Examiner.

U.S. C1. X.R.

Citations de brevets
Brevet cité Date de dépôt Date de publication Déposant Titre
US2499475 *15 avr. 19477 mars 1950Ericsson Telefon Ab L MDevice for registering the locations of personnel
US2535162 *4 août 194526 déc. 1950Philco CorpPosition indication and control system for moving objects or vehicles
US3115622 *15 oct. 195824 déc. 1963Polard Electronics CorpPanoramic scanning counter
US3238503 *23 févr. 19601 mars 1966Philips CorpFrequency responsive signalling system employing selective plural frequencies
Référencé par
Brevet citant Date de dépôt Date de publication Déposant Titre
US3573620 *31 mai 19686 avr. 1971Ashley John RaymondSecurity system with inductive to rf communications links
US3657715 *13 avr. 197018 avr. 1972Curtin William JUltrasonic paging system
US3696384 *8 juil. 19713 oct. 1972Recognition DevicesUltrasonic tracking and locating system
US3739329 *24 mai 197112 juin 1973Recognition DevicesElectronic system for locating
US3805227 *3 oct. 197216 avr. 1974Rcds Enterprises IncElectronic tracking locating system using multiple frequency, modulated, and time delayed ultrasonic signals
US3805265 *6 oct. 197116 avr. 1974Rcds Enterprises IncRadiant wave locating system
US4225953 *29 sept. 197830 sept. 1980Simon William FPersonnel locator
US4237344 *20 avr. 19792 déc. 1980Hospital Communication Systems, Inc.Rapid response health care communications system
US4275385 *13 août 197923 juin 1981Bell Telephone Laboratories, IncorporatedInfrared personnel locator system
US4740788 *6 oct. 198626 avr. 1988Konneker Lloyd KMethod of providing location dependent visitor dispatching service
US4814751 *27 juin 198821 mars 1989Wildlife Materials, Inc.Patient tracking system
US4835372 *24 juil. 198730 mai 1989Clincom IncorporatedPatient care system
US4850009 *31 mai 198818 juil. 1989Clinicom IncorporatedPortable handheld terminal including optical bar code reader and electromagnetic transceiver means for interactive wireless communication with a base communications station
US4857716 *8 juin 198815 août 1989Clinicom IncorporatedPatient identification and verification system and method
US4864313 *18 févr. 19875 sept. 1989Konneker Lloyd KVoting method of locating mobile objects
US4906853 *17 mars 19886 mars 1990United Manufacturing Co., Inc.Apparatus and method for varying the timing of a control signal
US4955000 *16 juin 19894 sept. 1990Nac Engineering And Marketing, Inc.Ultrasonic personnel location identification system
US5027314 *7 mars 199025 juin 1991United Manufacturing Co., Inc.Apparatus and method for position reporting
US5291399 *27 juil. 19901 mars 1994Executone Information Systems, Inc.Method and apparatus for accessing a portable personal database as for a hospital environment
US5317309 *21 sept. 199231 mai 1994Westinghouse Electric Corp.Dual mode electronic identification system
US5396224 *22 nov. 19917 mars 1995Hewlett-Packard CompanyTelemetered patient location system and method
US5426425 *7 oct. 199220 juin 1995Wescom, Inc.Intelligent locator system with multiple bits represented in each pulse
US5465082 *3 août 19927 nov. 1995Executone Information Systems, Inc.Apparatus for automating routine communication in a facility
US5479408 *22 févr. 199426 déc. 1995Will; Craig A.Wireless personal paging, communications, and locating system
US5524129 *23 juin 19944 juin 1996Ronald K. PettigrewPortable counter and data storage system
US5561412 *12 juil. 19931 oct. 1996Hill-Rom, Inc.Patient/nurse call system
US5588009 *3 févr. 199424 déc. 1996Will; Craig A.Personal paging, communications, and locating system
US5627524 *2 mars 19956 mai 1997Lifecom, LlcInfrared locator system
US5640157 *29 nov. 199517 juin 1997Hollandse Signaalapparaten B.V.Information system for a ship
US5822544 *20 avr. 199513 oct. 1998Executone Information Systems, Inc.Patient care and communication system
US5838223 *23 août 199617 nov. 1998Hill-Rom, Inc.Patient/nurse call system
US5892817 *10 juil. 19956 avr. 1999Will; Craig AlexanderWireless system for alerting individual to incoming telephone call
US5970388 *26 déc. 199619 oct. 1999Will; Craig A.Wireless system for indicating an incoming telephone call and controlling its transfer
US6046687 *10 mars 19974 avr. 2000Trimble Navigation LimitedClandsetine location reporting for missing vehicles
US6292106 *13 oct. 199818 sept. 2001Cubic Defense Systems, Inc.Acoustical system and method for simultaneously locating and tracking multiple personnel in rooms of a building
US63447947 janv. 20005 févr. 2002Hill-Rom, Inc.Personnel and asset tracking method and apparatus
US646265629 déc. 20008 oct. 2002Hill-Rom Services, Inc.Personnel and asset tracking method and apparatus
US675995924 mai 20026 juil. 2004Hill-Rom Services, Inc.Waste segregation compliance system
US68257637 oct. 200230 nov. 2004Hill-Rom Services, Inc.Personnel and asset tracking method and apparatus
US695870618 juin 200125 oct. 2005Hill-Rom Services, Inc.Patient care and communication system
US697268319 juil. 20026 déc. 2005Hill-Rom Services, Inc.Badge for a locating and tracking system
US69801112 août 200227 déc. 2005Hill-Rom Services, Inc.Medication tracking system
US6982639 *26 nov. 20023 janv. 2006Ge Medical Systems Information Technologies, Inc.Wireless subject locator
US70103696 mai 20037 mars 2006Hill-Rom Services, Inc.Medical equipment controller
US70423378 janv. 20029 mai 2006Hill-Rom Services, Inc.Communication and data entry device
US706139613 avr. 199513 juin 2006Dwyer Precision Products, Inc.Intelligent locator system
US70923761 avr. 200215 août 2006Hill-Rom Services, Inc.Hospital bed and network system
US71196886 juil. 200410 oct. 2006Hill-Rom Services, Inc.Waste segregation compliance system
US724230612 avr. 200410 juil. 2007Hill-Rom Services, Inc.Article locating and tracking apparatus and method
US72489338 mai 200224 juil. 2007Hill-Rom Services, Inc.Article locating and tracking system
US731553511 janv. 20061 janv. 2008Hill-Rom Services, Inc.Information management system for bed data
US731938627 juil. 200515 janv. 2008Hill-Rom Services, Inc.Configurable system for alerting caregivers
US745002428 juin 200711 nov. 2008Hill-Rom Services, Inc.Article locating and tracking apparatus and method
US748333812 déc. 200327 janv. 2009GencsusUltrasonic locator system and method
US748618926 avr. 20063 févr. 2009Rf Code, IncRFID systems and methods employing infrared localization
US771538719 déc. 200711 mai 2010Hill-Rom Services, Inc.Healthcare computer system with intra-room network
US773447629 sept. 20038 juin 2010Hill-Rom Services, Inc.Universal communications, monitoring, tracking, and control system for a healthcare facility
US774621820 déc. 200729 juin 2010Hill-Rom Services, Inc.Configurable system for alerting caregivers
US78314479 avr. 20109 nov. 2010Hill-Rom Services, Inc.Healthcare computer system
US78522087 févr. 200714 déc. 2010Hill-Rom Services, Inc.Wireless bed connectivity
US786874029 août 200711 janv. 2011Hill-Rom Services, Inc.Association of support surfaces and beds
US80310577 déc. 20104 oct. 2011Hill-Rom Services, Inc.Association of support surfaces and beds
US803106914 janv. 20084 oct. 2011Oded Yair CohnElectronic security seal and system
US804662512 févr. 200925 oct. 2011Hill-Rom Services, Inc.Distributed fault tolerant architecture for a healthcare communication system
US81204714 déc. 200921 févr. 2012Hill-Rom Services, Inc.Hospital bed with network interface unit
US816930412 févr. 20091 mai 2012Hill-Rom Services, Inc.User station for healthcare communication system
US827289228 mai 200825 sept. 2012Hill-Rom Services, Inc.Hospital bed having wireless data capability
US82840473 déc. 20109 oct. 2012Hill-Rom Services, Inc.Wireless bed connectivity
US83058426 mai 20086 nov. 2012Merlin360.Com LimitedLocation system for asset or personnel tracking using multi-frequency ultrasonic transducers and goertzel filters
US838452612 févr. 200926 févr. 2013Hill-Rom Services, Inc.Indicator apparatus for healthcare communication system
US839274723 sept. 20115 mars 2013Hill-Rom Services, Inc.Distributed fault tolerant architecture for a healthcare communication system
US842160623 déc. 201116 avr. 2013Hill-Rom Services, Inc.Wireless bed locating system
US845628611 avr. 20124 juin 2013Hill-Rom Services, Inc.User station for healthcare communication system
US846196829 août 200711 juin 2013Hill-Rom Services, Inc.Mattress for a hospital bed for use in a healthcare facility and management of same
US853699024 janv. 201217 sept. 2013Hill-Rom Services, Inc.Hospital bed with nurse call system interface unit
US859899512 févr. 20093 déc. 2013Hill-Rom Services, Inc.Distributed healthcare communication system
US860491623 sept. 201110 déc. 2013Hill-Rom Services, Inc.Association of support surfaces and beds
US860491728 sept. 201210 déc. 2013Hill-Rom Services, Inc.Hospital bed having user input to enable and suspend remote monitoring of alert conditions
US876276620 févr. 201324 juin 2014Hill-Rom Services, Inc.Distributed fault tolerant architecture for a healthcare communication system
US877992424 févr. 201015 juil. 2014Hill-Rom Services, Inc.Nurse call system with additional status board
US88036693 juin 201312 août 2014Hill-Rom Services, Inc.User station for healthcare communication system
US886659811 sept. 201321 oct. 2014Hill-Rom Services, Inc.Healthcare communication system with whiteboard
US89171666 déc. 201323 déc. 2014Hill-Rom Services, Inc.Hospital bed networking system and method
US90500319 oct. 20149 juin 2015Hill-Rom Services, Inc.Healthcare communication system having configurable alarm rules
US914292313 mai 201422 sept. 2015Hill-Rom Services, Inc.Hospital bed having wireless data and locating capability
US923597229 mai 201312 janv. 2016Pragmatus Mobile LLCPersonal security and tracking system
US92359796 août 201412 janv. 2016Hill-Rom Services, Inc.User station for healthcare communication system
US929924227 nov. 201329 mars 2016Hill-Rom Services, Inc.Distributed healthcare communication system
US933667214 avr. 201510 mai 2016Hill-Rom Services, Inc.Healthcare communication system for programming bed alarms
US94119348 mai 20129 août 2016Hill-Rom Services, Inc.In-room alarm configuration of nurse call system
US951389926 nov. 20146 déc. 2016Hill-Rom Services, Inc.System wide firmware updates to networked hospital beds
US951703426 févr. 201613 déc. 2016Hill-Rom Services, Inc.Healthcare communication system for programming bed alarms
US951703525 févr. 201613 déc. 2016Hill-Rom Services, Inc.Distributed healthcare communication system
US957273714 août 201521 févr. 2017Hill-Rom Services, Inc.Hospital bed having communication modules
US973429316 juin 201415 août 2017Hill-Rom Services, Inc.System and method for association of patient care devices to a patient
US20020044043 *18 juin 200118 avr. 2002John ChacoPatient care and communication system
US20020183979 *8 mai 20025 déc. 2002Wildman Timothy D.Article locating and tracking system
US20030090387 *19 juil. 200215 mai 2003James LestienneBadge for a locating and tracking system
US20040100377 *26 nov. 200227 mai 2004Ge Medical Systems Information Technologies, Inc.Wireless subject locator
US20040193449 *29 sept. 200330 sept. 2004Wildman Timothy D.Universal communications, monitoring, tracking, and control system for a healthcare facility
US20040250004 *6 juil. 20049 déc. 2004Hill-Rom Services, Inc.Waste segregation compliance system
US20050035862 *12 avr. 200417 févr. 2005Wildman Timothy D.Article locating and tracking apparatus and method
US20050128099 *12 déc. 200316 juin 2005Edwards Systems Technology, Inc.Ultrasonic locator system and method
US20050151641 *3 nov. 200414 juil. 2005Hill-Rom Services, Inc.Personnel and asset tracking method and apparatus
US20060114888 *11 janv. 20061 juin 2006Schuman Richard JInformation management system for bed data
US20060261951 *26 avr. 200623 nov. 2006Rf Code, Inc.RFID systems and methods employing infrared localization
US20070072676 *29 sept. 200529 mars 2007Shumeet BalujaUsing information from user-video game interactions to target advertisements, such as advertisements to be served in video games for example
US20070080801 *18 oct. 200412 avr. 2007Weismiller Matthew WUniversal communications, monitoring, tracking, and control system for a healthcare facility
US20070210917 *7 févr. 200713 sept. 2007Collins Williams F JrWireless bed connectivity
US20080094207 *20 déc. 200724 avr. 2008Collins Williams F JrConfigurable system for alerting caregivers
US20080095156 *19 déc. 200724 avr. 2008Schuman Richard JHealthcare computer system with intra-room network
US20080189132 *5 févr. 20077 août 2008Matthew MinsonAutomatic Hospital Bed Accounting System
US20080224861 *28 mai 200818 sept. 2008Mcneely Craig AHospital bed having wireless data capability
US20090056027 *29 août 20075 mars 2009Hill-Rom Services, Inc.Mattress for a hospital bed for use in a healthcare facility and management of same
US20090179757 *14 janv. 200816 juil. 2009Cohn Oded YairElectronic security seal and system
US20090212925 *12 févr. 200927 août 2009Schuman Sr Richard JosephUser station for healthcare communication system
US20090212956 *12 févr. 200927 août 2009Schuman Richard JDistributed healthcare communication system
US20090217080 *12 févr. 200927 août 2009Ferguson David CDistributed fault tolerant architecture for a healthcare communication system
US20100102965 *6 mai 200829 avr. 2010Merlin360.Com LimitedLocation system, for asset or personnel tracking
US20110072583 *7 déc. 201031 mars 2011Mcneely Craig AAssociation of support surfaces and beds
US20110074571 *3 déc. 201031 mars 2011Collins Jr Williams FWireless bed connectivity
US20110205062 *24 févr. 201025 août 2011Pesot Whitney WNurse call system with additional status board
DE2232946A1 *5 juil. 197218 janv. 1973Recognition DevicesUltraschall-ortungsanlage
DE3210002A1 *19 mars 198222 sept. 1983Zettler Elektrotechn AloisPresence display
DE102005040069A1 *24 août 200515 mars 2007Siemens AgVerfahren und Kommunikationssystem zur Positionsbestimmung einer Kommunikationseinrichtung
Classifications
Classification aux États-Unis367/191, 367/111, 340/572.1, 367/910, 367/117, 340/8.1
Classification internationaleG08B3/10
Classification coopérativeG08B3/1008, Y10S367/91
Classification européenneG08B3/10B