CA719311A
(en)
*
|
|
1965-10-05 |
H. Bijkerk Hendrik |
Switch for signalizing unwanted micturition
|
AT58704B
(de)
|
1910-11-18 |
1913-04-25 |
Julius Heinrich Joh Stephenson |
Schaltungsanordnung zur Fehlerortbestimmung an Kabeln und Leitungen.
|
US1084910A
(en)
*
|
1911-11-14 |
1914-01-20 |
Julius Heinrich Johann Adolpf Stephenson |
Method for localizing faults in cables and circuits.
|
GB164965A
(en)
|
1920-06-19 |
1921-06-23 |
Leicester Richards Lee |
Improvements in or relating to electric cables
|
US1648197A
(en)
*
|
1926-03-22 |
1927-11-08 |
Benjamin T Roodhouse |
Water-operated circuit closer
|
US2004569A
(en)
*
|
1926-05-14 |
1935-06-11 |
Nat Aniline & Chem Co Inc |
Electrometric determinations
|
US1772232A
(en)
*
|
1927-12-06 |
1930-08-05 |
Jesse S Van Guilder |
Alarm
|
US1786843A
(en)
*
|
1929-10-07 |
1930-12-30 |
Hans N Hedeby |
Leak detector
|
DE684427C
(de)
*
|
1938-04-13 |
1939-11-28 |
Heinz Berger |
Vorrichtung zum Feststellen von Gasausstroemungen aus Gasleitungen und Behaeltern
|
BE471379A
(de)
|
1941-02-27 |
|
|
|
DE899978C
(de)
|
1942-10-18 |
1953-12-17 |
Siemens Ag |
Einrichtung zum Bestimmen der Lage eines Erdschlusses an einem elektrischen Leiter
|
GB561523A
(en)
|
1942-11-05 |
1944-05-23 |
Angus Love |
Improvements in or relating to electrical measuring instruments
|
US2360434A
(en)
*
|
1943-07-29 |
1944-10-17 |
Dennis J Manning |
Leak-locating apparatus
|
US2432367A
(en)
*
|
1943-09-23 |
1947-12-09 |
Wingfoot Corp |
Leak detector
|
US2716229A
(en)
*
|
1946-06-14 |
1955-08-23 |
Ralph F Wehrmann |
Leak detector
|
GB646392A
(en)
|
1947-11-29 |
1950-11-22 |
Thomas Greene |
Improvements in electric measuring apparatus short or open circuits in wires, cables, or other sets of conductors
|
US2563341A
(en)
*
|
1949-11-30 |
1951-08-07 |
Gen Motors Corp |
Humidity control
|
US2581213A
(en)
*
|
1949-12-15 |
1952-01-01 |
Gen Electric |
Temperature responsive signaling and locating system
|
US2741591A
(en)
*
|
1951-03-02 |
1956-04-10 |
Ionics |
Method of and apparatus for separating ions
|
BE513364A
(de)
*
|
1951-12-29 |
|
|
|
US2790146A
(en)
*
|
1952-04-02 |
1957-04-23 |
Honeywell Regulator Co |
Voltage ratio measuring apparatus
|
US2879471A
(en)
*
|
1954-02-23 |
1959-03-24 |
Dresser Ind |
Resistance meter
|
US2759175A
(en)
*
|
1954-03-12 |
1956-08-14 |
Thomas R Spalding |
Leak detector for pipe joint
|
US2881392A
(en)
*
|
1955-01-10 |
1959-04-07 |
Western Electric Co |
D. c. voltage ratio measuring system
|
US2841765A
(en)
*
|
1955-03-18 |
1958-07-01 |
George B Harrold |
Electric ohmmeter
|
US2930232A
(en)
*
|
1955-07-20 |
1960-03-29 |
Morton F Spears |
Device for manifesting thermal boundaries
|
US2976486A
(en)
*
|
1958-01-16 |
1961-03-21 |
Daystrom Inc |
Resistance comparator
|
GB919517A
(en)
|
1958-06-04 |
1963-02-27 |
Raymond Gstalder |
A system for detecting, indicating and locating automatically liquid or gas leaks or excessive temperatures at separate fixed points or over a continuous length or distance
|
US3033916A
(en)
*
|
1958-06-16 |
1962-05-08 |
Insul 8 Corp |
Electrical conductor
|
US3098116A
(en)
*
|
1959-10-07 |
1963-07-16 |
Anaconda Wire & Cable Co |
Leak-detecting telephone cable
|
US3045198A
(en)
*
|
1959-12-11 |
1962-07-17 |
James P Dolan |
Detection device
|
FR1260189A
(fr)
|
1960-03-25 |
1961-05-05 |
Thomson Houston Comp Francaise |
Câble à conducteurs de faible section et à très grande résistance mécanique
|
US3200388A
(en)
*
|
1960-08-12 |
1965-08-10 |
Weber Aircraft Corp |
Water leakage alarm system
|
NL271732A
(de)
*
|
1960-11-24 |
|
|
|
US3127485A
(en)
*
|
1961-06-26 |
1964-03-31 |
Robert V Vitolo |
Rain trigger switch
|
US3248646A
(en)
*
|
1962-07-19 |
1966-04-26 |
Whitney Blake Co |
Location of cable faults by comparing a section of the faulted cable with a part of the section
|
DE1210057B
(de)
*
|
1963-10-11 |
1966-02-03 |
Siemens Ag |
Einrichtung zur Meldung von Wassereinbruch in Fernmeldekabeln
|
US3254334A
(en)
*
|
1963-12-19 |
1966-05-31 |
American District Telegraph Co |
Electrical protection system utilizing reverse polarity line testing with unidirectional current devices having reverse breakdown characteristic
|
US3304612A
(en)
*
|
1963-12-23 |
1967-02-21 |
Union Oil Co |
Method and apparatus for converting cartograph coordinates to permanent digital form
|
US3382493A
(en)
*
|
1964-11-04 |
1968-05-07 |
Thermal Conduits Inc |
Underground pipe insulation liquid-detector
|
US3365661A
(en)
*
|
1965-04-26 |
1968-01-23 |
Anaconda Wire & Cable Co |
Method and apparatus for locating leaks in a cable by determining the distance to a short circuit in the cable
|
US3470340A
(en)
*
|
1965-09-13 |
1969-09-30 |
Butts Ernest Otto |
Leak detection apparatus
|
GB1178231A
(en)
|
1966-02-11 |
1970-01-21 |
Post Office |
Improvements in or relating to methods and apparatus for locating faults in the conductors of cables.
|
DE1297682B
(de)
|
1966-04-21 |
1969-06-19 |
Siemens Ag |
In seiner Daempfung stufenweise einstellbares Vierpolnetzwerk
|
US3383863A
(en)
*
|
1966-08-03 |
1968-05-21 |
Joe R. Berry |
Pond, tank and pit liner and method of detecting leaks
|
US3564526A
(en)
*
|
1966-12-23 |
1971-02-16 |
Butts Ernest Otto |
Pipeline leak detection device
|
US3427414A
(en)
*
|
1967-01-13 |
1969-02-11 |
Sinclair Research Inc |
Switch assembly for detecting underground leaks
|
US3520476A
(en)
*
|
1967-07-19 |
1970-07-14 |
Howard C Schmid |
Electronic soil moisture and temperature sensing device
|
US3465109A
(en)
*
|
1967-10-25 |
1969-09-02 |
Sealtronics Inc |
Electrical switch having deformable moving contact arm
|
DE1811704A1
(de)
*
|
1968-11-29 |
1970-07-30 |
Allg Ind Commerz Walter Von We |
Kohlenwasserstoff-Warnsonde fuer Boden- und Erdverlegung
|
US3721898A
(en)
*
|
1968-12-04 |
1973-03-20 |
P Dragoumis |
Apparatus for detecting leakage from or rupture of pipes and other vessels containing fluid under pressure
|
US3550120A
(en)
*
|
1968-12-09 |
1970-12-22 |
Honeywell Inc |
Control apparatus
|
US3578767A
(en)
*
|
1968-12-11 |
1971-05-18 |
Atlas Chem Ind |
Safety and arming device
|
US3588776A
(en)
*
|
1969-01-13 |
1971-06-28 |
Lewis Eng Co |
Safety cable
|
US3600674A
(en)
*
|
1969-04-02 |
1971-08-17 |
Chevron Res |
Method of determining leaks from buried pipelines using a time-sharing transmission line
|
US4013924A
(en)
*
|
1970-03-19 |
1977-03-22 |
A/S E. Rasmussen |
Methods and means for detecting the presence of moisture adjacent insulated pipes
|
GB1352124A
(en)
|
1970-07-08 |
1974-05-08 |
Electricity Council |
Cable fault location
|
US3849723A
(en)
*
|
1970-08-06 |
1974-11-19 |
G Allen |
Conductivity measuring method and apparatus
|
US3662367A
(en)
*
|
1971-01-04 |
1972-05-09 |
Bell Telephone Labor Inc |
Water alarm and fault-locating for air core plastic-insulated telephone cable
|
US3706927A
(en)
*
|
1971-04-27 |
1972-12-19 |
Gustaf I Jedvall |
Method for measuring the absolute distance to a leakage fault in an electrical conductor
|
US3866202A
(en)
*
|
1971-06-15 |
1975-02-11 |
Gulf & Western Mfg Co |
Alarm circuitry
|
DE2135214C3
(de)
|
1971-07-14 |
1974-01-31 |
Siemens Ag, 1000 Berlin U. 8000 Muenchen |
Resonanzkreis mit einer Induktivität, einer Kapazität und einem veränderbaren Dämpfungswiderstand
|
US3800216A
(en)
*
|
1971-08-11 |
1974-03-26 |
Dynatel Corp |
Cable fault locator apparatus and method with reference voltage comparison
|
US3702473A
(en)
*
|
1971-08-27 |
1972-11-07 |
Gen Motors Corp |
Seven-state resistance sensing supervisory system utilizing single pole-double throw switches
|
US3800217A
(en)
*
|
1971-09-23 |
1974-03-26 |
Lowrance Electronics Mfg |
Pipeline including means of indicating the existence of and location of a leak
|
CH547531A
(de)
|
1972-07-17 |
1974-03-29 |
Cerberus Ag |
Feuermeldeanlage.
|
US3885097A
(en)
*
|
1972-08-11 |
1975-05-20 |
Nat Res Dev |
Graphical input apparatus for electrical apparatus
|
US4125822A
(en)
*
|
1972-10-23 |
1978-11-14 |
Benno Perren |
Probe for determining organic liquids
|
US3812420A
(en)
*
|
1972-12-21 |
1974-05-21 |
Gen Ind Inc |
Bridge circuit changing fault location method and device
|
GB1355176A
(en)
*
|
1973-02-08 |
1974-06-05 |
Nils Oestbo Ab |
Means for detecting leakage from an oil conveying conduit
|
US3852995A
(en)
*
|
1973-02-23 |
1974-12-10 |
Faberge Inc |
Method and apparatus for detecting leaks in containers
|
JPS508078A
(de)
|
1973-05-24 |
1975-01-28 |
|
|
CA978614A
(en)
*
|
1973-07-19 |
1975-11-25 |
Stanley Wolkowski |
Leak detection cable
|
DE2337983C2
(de)
|
1973-07-26 |
1984-03-22 |
Bernd 6271 Limbach Brandes |
Ortungs- und Überwachungsschaltung
|
US3875331A
(en)
*
|
1973-11-08 |
1975-04-01 |
Vector General |
Vector tablet digitizing system
|
JPS546240B2
(de)
*
|
1973-12-18 |
1979-03-26 |
|
|
GB1470503A
(en)
*
|
1974-03-19 |
1977-04-14 |
Raychem Ltd |
Electrical apparatus
|
GB1465515A
(en)
*
|
1974-07-10 |
1977-02-23 |
Shell Int Research |
Detector
|
JPS5415435B2
(de)
*
|
1974-07-13 |
1979-06-14 |
|
|
JPS581379B2
(ja)
*
|
1974-10-08 |
1983-01-11 |
ミズオチ シヨウケン |
リユウタイケンチケ−ブル
|
DE2455007B2
(de)
|
1974-11-20 |
1976-09-02 |
Seba-Dynatronic Industrie-Elektronic Gmbh & Co Kg, 8601 Baunach |
Verfahren zum vororten von isolationsdefekten an elektrischen kabeln
|
DE2517769A1
(de)
|
1975-04-18 |
1976-10-28 |
Stephen Hanson Lampen |
Spannungsteiler
|
US3991413A
(en)
*
|
1975-06-23 |
1976-11-09 |
Berger Philip H |
Constant current detector system
|
JPS5289981A
(en)
*
|
1976-01-22 |
1977-07-28 |
Towa Electric |
Method of detecting leakage from pipeline through detecting cable
|
US4193068A
(en)
*
|
1976-03-16 |
1980-03-11 |
Ziccardi John J |
Hemorrhage alarms
|
US4052901A
(en)
*
|
1976-07-29 |
1977-10-11 |
Bjork Albion P |
Level detecting
|
DE2807084A1
(de)
|
1976-08-27 |
1979-08-23 |
Kabel Metallwerke Ghh |
Meldeader zur anzeige und ortung von lecks
|
AU512200B2
(en)
|
1976-11-13 |
1980-09-25 |
Sumitomo Electric Industries, Ltd. |
Cable fault locating apparatus
|
SU678646A1
(ru)
|
1977-03-18 |
1979-08-05 |
Предприятие П/Я В-2785 |
Симметричный двухползунковый аттенюатор
|
US4129030A
(en)
*
|
1977-10-13 |
1978-12-12 |
Ads Systems, Inc. |
Sensing apparatus and method
|
CA1129001A
(en)
*
|
1978-01-27 |
1982-08-03 |
Ernest E.J. Huggins |
Location of contact faults on electrically conductive cables
|
US4184143A
(en)
*
|
1978-06-01 |
1980-01-15 |
Texaco Inc. |
Seismic signal conductor testing system
|
US4263115A
(en)
*
|
1978-07-03 |
1981-04-21 |
Max Planck Gesellschaft Zur Forderung Der Wissenschaften |
Ion-selective electrode device for polarographic measurement of oxygen
|
US4445012A
(en)
*
|
1978-07-24 |
1984-04-24 |
Liston Scientific Corporation |
Moisture sensor for purging system
|
US4305321A
(en)
*
|
1978-10-10 |
1981-12-15 |
Cohn James M |
Electrical control devices
|
US4359721A
(en)
*
|
1978-10-16 |
1982-11-16 |
American District Telegraph Company |
Two-wire multi-zone alarm system
|
US4423410A
(en)
*
|
1978-10-16 |
1983-12-27 |
American District Telegraph Company |
Two-wire multi-zone alarm system
|
US4224595A
(en)
*
|
1978-11-02 |
1980-09-23 |
Ads Systems, Inc. |
Graded particle adsorption type sensor and method of improving performance of an adsorbing sensor
|
GB2043974B
(en)
|
1978-11-10 |
1983-02-23 |
Bicc Ltd |
Fire detectgion system
|
US4237721A
(en)
*
|
1978-12-11 |
1980-12-09 |
Ads Systems, Inc. |
Apparatus and method for detecting substances and for regulating current
|
US4206632A
(en)
*
|
1979-01-23 |
1980-06-10 |
Hirosuke Suzuki |
Liquid detecting device
|
US4246575A
(en)
*
|
1979-02-02 |
1981-01-20 |
Purtell Jack L |
Moisture detector
|
DE2911703A1
(de)
|
1979-03-24 |
1980-10-02 |
Kabel Metallwerke Ghh |
Nachrichtenkabel mit kunststoffisolierten adern
|
NL187594C
(nl)
*
|
1979-04-02 |
1991-11-18 |
Nippon Telegraph & Telephone |
Inrichting voor het detecteren van x- en y-cooerdinaten.
|
US4307606A
(en)
*
|
1979-06-11 |
1981-12-29 |
Johnson Hugh G |
Thermal transition zone sensing and indicating system
|
SE414532B
(sv)
*
|
1979-06-18 |
1980-08-04 |
Blom H |
Anordning vid en fjerrvermeledning samt sett att framstella en sadan anordning
|
SE424359B
(sv)
*
|
1979-09-05 |
1982-07-12 |
Blom H |
Anordning for brottindikering vid fjerrvermeror
|
US4298969A
(en)
*
|
1979-09-26 |
1981-11-03 |
Exxon Production Research Company |
Method and apparatus for testing the impedances of geophone channels
|
US4297686A
(en)
*
|
1979-10-01 |
1981-10-27 |
Tom M Dale |
Water detection device
|
US4369436A
(en)
*
|
1979-10-22 |
1983-01-18 |
American District Telegraph Company |
Anti-bridging cable supervision circuit
|
JPS56132586A
(en)
*
|
1980-03-19 |
1981-10-16 |
Osaka Gas Co Ltd |
Method of and conductor for long-sized material buried underground
|
US4319232A
(en)
*
|
1980-03-19 |
1982-03-09 |
Westphal Frank C |
Liquid leakage detector
|
DE3011500C2
(de)
|
1980-03-25 |
1982-10-28 |
Siemens AG, 1000 Berlin und 8000 München |
Einrichtung zur Lecküberwachung und zum Auffinden einer Leckstelle in der wasserdichten Außenhaut eines Gebäudes
|
CA1134920A
(en)
*
|
1980-04-30 |
1982-11-02 |
David E. Vokey |
Cable assembly for detecting the ingress of water inside a cable
|
GB2077471A
(en)
|
1980-06-06 |
1981-12-16 |
Fibun Bv |
Cable for use in a security system
|
FR2485395B1
(fr)
*
|
1980-06-24 |
1986-04-11 |
Commissariat Energie Atomique |
Membrane echangeuse de cations, son procede de fabrication et son application en tant qu'electrolyte solide
|
US4319184A
(en)
*
|
1980-08-25 |
1982-03-09 |
Walter Kowalczyk |
Remote control precision step attenuator
|
US4374379A
(en)
*
|
1980-08-25 |
1983-02-15 |
Dennison Jr Everett G |
Moisture sensing device for pipes and the like
|
US4404516A
(en)
*
|
1980-10-29 |
1983-09-13 |
Johnson Jr Victor R |
System for detecting leaks from liquid-containing reservoirs and conduits
|
NZ196084A
(en)
|
1981-01-22 |
1984-07-06 |
Insapipe Ind Ltd |
Moisture sensing in thermal insulation:electrodes encased in hydrophilic material
|
US4468607A
(en)
*
|
1981-05-07 |
1984-08-28 |
Sanyo Electric Co., Ltd. |
Ladder-type signal attenuator
|
AU558619B2
(en)
*
|
1981-06-12 |
1987-02-05 |
Raychem Corporation |
Corrosion protection system
|
US4446421A
(en)
*
|
1981-06-22 |
1984-05-01 |
Grumman Aerospace Corporation |
Apparatus and method for locating faults in cables
|
FR2509053A1
(fr)
*
|
1981-07-02 |
1983-01-07 |
Inst Francais Du Petrole |
Dispositif de detection des entrees d'eau a l'interieur d'une flute sismique
|
DE3225921C2
(de)
*
|
1982-07-10 |
1985-10-24 |
Barlian, Reinhold, Dipl.-Ing.(FH), 6990 Bad Mergentheim |
Überwachungseinrichtung
|
AT370229B
(de)
|
1981-07-16 |
1983-03-10 |
Egger K Kunststoffwerk |
Schaltungsanordnung zur bestimmung von leckstellen in isolierten rohrleitungen
|
US4424479A
(en)
*
|
1981-10-05 |
1984-01-03 |
Bell Telephone Laboratories, Incorporated |
Loop fault location
|
DE3140804A1
(de)
|
1981-10-14 |
1983-04-21 |
kabelmetal electro GmbH, 3000 Hannover |
"flexibles leitungsrohr"
|
US4400663A
(en)
*
|
1981-10-28 |
1983-08-23 |
Bell Telephone Laboratories, Incorporated |
Shunt fault tester for multiconductor cable
|
DE3239133A1
(de)
|
1981-12-02 |
1983-06-09 |
Howaldtswerke-Deutsche Werft Ag Hamburg Und Kiel, 2300 Kiel |
Ueberwachungsleitung zur feststellung von feuchtigkeitsorten
|
DE3209560A1
(de)
|
1982-03-16 |
1983-09-29 |
Peter Lancier Maschinenbau-Hafenhütte GmbH & Co KG, 4400 Münster |
Verfahren zur bestimmung einer leckstelle in einem pneumatisch ueberwachten kabel
|
US4414441A
(en)
*
|
1982-04-02 |
1983-11-08 |
Emhart Industries, Inc. |
Hydrocarbon responsive switch
|
US4571292A
(en)
*
|
1982-08-12 |
1986-02-18 |
Case Western Reserve University |
Apparatus for electrochemical measurements
|
JPS5942960U
(ja)
*
|
1982-09-16 |
1984-03-21 |
株式会社潤工社 |
水面流出油の検知装置
|
US4467286A
(en)
*
|
1982-11-08 |
1984-08-21 |
Burr-Brown Corporation |
Resistor ladder network
|
JPS59144461U
(ja)
*
|
1983-03-10 |
1984-09-27 |
株式会社潤工社 |
液体検知センサ
|
US4468306A
(en)
*
|
1983-04-06 |
1984-08-28 |
Dorr-Oliver Incorporated |
Biodic electrofiltration
|
US5015958A
(en)
|
1983-06-30 |
1991-05-14 |
Raychem Corporation |
Elongate sensors comprising conductive polymers, and methods and apparatus using such sensors
|
JPS6086945U
(ja)
*
|
1983-11-18 |
1985-06-14 |
株式会社 潤工社 |
漏液センサ
|
JPS6190048A
(ja)
|
1984-10-09 |
1986-05-08 |
Junkosha Co Ltd |
漏液検知センサ
|
US4926165A
(en)
*
|
1985-10-15 |
1990-05-15 |
Raychem Corporation |
Devices for detecting and obtaining information about an event
|
US4631952A
(en)
*
|
1985-08-30 |
1986-12-30 |
Chevron Research Company |
Resistive hydrocarbon leak detector
|