DE3485767D1 - Methode zur erkennung und beschaffung von information ueber die veraenderungen von variablen. - Google Patents

Methode zur erkennung und beschaffung von information ueber die veraenderungen von variablen.

Info

Publication number
DE3485767D1
DE3485767D1 DE8787106434T DE3485767T DE3485767D1 DE 3485767 D1 DE3485767 D1 DE 3485767D1 DE 8787106434 T DE8787106434 T DE 8787106434T DE 3485767 T DE3485767 T DE 3485767T DE 3485767 D1 DE3485767 D1 DE 3485767D1
Authority
DE
Germany
Prior art keywords
variables
detecting
changes
getting information
getting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE8787106434T
Other languages
English (en)
Other versions
DE3485767T2 (de
Inventor
Peter Leonard Brooks
Larry Russell Reeder
James Patrick Reed
Thomas Winton Tolles
Michael Masia
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Raychem Corp
Original Assignee
Raychem Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27504485&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3485767(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Raychem Corp filed Critical Raychem Corp
Publication of DE3485767D1 publication Critical patent/DE3485767D1/de
Application granted granted Critical
Publication of DE3485767T2 publication Critical patent/DE3485767T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/042—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid
    • G01M3/045—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by using materials which expand, contract, disintegrate, or decompose in contact with a fluid with electrical detection means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
    • G01M3/165—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means by means of cables or similar elongated devices, e.g. tapes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
    • G01M3/18—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08—Locating faults in cables, transmission lines, or networks
    • G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
    • G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B23/00—Alarms responsive to unspecified undesired or abnormal conditions
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/018—Sensor coding by detecting magnitude of an electrical parameter, e.g. resistance

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Locating Faults (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
  • Examining Or Testing Airtightness (AREA)
DE8787106434T 1983-06-30 1984-06-29 Methode zur erkennung und beschaffung von information ueber die veraenderungen von variablen. Expired - Lifetime DE3485767T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US50989783A 1983-06-30 1983-06-30
US59904784A 1984-04-11 1984-04-11
US60348584A 1984-04-24 1984-04-24
US61810984A 1984-06-07 1984-06-07

Publications (2)

Publication Number Publication Date
DE3485767D1 true DE3485767D1 (de) 1992-07-16
DE3485767T2 DE3485767T2 (de) 1993-02-04

Family

ID=27504485

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787106434T Expired - Lifetime DE3485767T2 (de) 1983-06-30 1984-06-29 Methode zur erkennung und beschaffung von information ueber die veraenderungen von variablen.

Country Status (12)

Country Link
EP (1) EP0133748B1 (de)
DE (1) DE3485767T2 (de)
DK (1) DK322384A (de)
ES (1) ES8704019A1 (de)
FI (1) FI81681C (de)
GB (1) GB2143979B (de)
HK (1) HK94191A (de)
IL (1) IL72246A (de)
IN (2) IN165617B (de)
MX (1) MX160660A (de)
NO (1) NO842648L (de)
NZ (1) NZ208683A (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE77155T1 (de) 1983-06-30 1992-06-15 Raychem Corp Methode zur erkennung und beschaffung von information ueber die veraenderungen von variablen.
GB8524237D0 (en) * 1985-10-02 1985-11-06 Raychem Gmbh Pressure sensor
US4888098A (en) * 1986-02-20 1989-12-19 Raychem Corporation Method and articles employing ion exchange material
DE3775097D1 (de) 1986-02-20 1992-01-23 Raychem Corp Einen ionentauschenden stoff verwendende verfahren und gegenstand.
US4843327A (en) * 1987-06-03 1989-06-27 Raychem Corporation Branched sensor system
US4931741A (en) * 1987-06-03 1990-06-05 Raychem Corporation Branched sensor system
US4922183A (en) * 1988-06-03 1990-05-01 Raychem Corporation Methods, systems and apparatus for detecting changes in variables
GB2220494B (en) * 1988-07-09 1992-04-15 Gore & Ass A system for the detection and location of leaks
JPH0230038U (de) * 1988-08-18 1990-02-26
US4926129A (en) * 1988-10-12 1990-05-15 Raychem Corporation Sensor assembly for detecting multiple events and distinguishing between them
CH680958A5 (de) * 1989-11-08 1992-12-15 Domotec Ag
GB9102385D0 (en) * 1991-02-04 1991-03-20 Raychem Ltd Temperature sensor
GB2276766A (en) * 1993-04-01 1994-10-05 John Cross Mcnab Heat and compression detection cable
FR2709347B1 (fr) * 1993-08-27 1995-10-13 Ttk Installation de détection et de localisation de fuites de liquide.
DE102012103123B4 (de) * 2012-04-12 2014-08-21 Cummins Ltd. Abgasnachbehandlungseinrichtung und Verfahren zum Betrieb einer solchen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT58704B (de) * 1910-11-18 1913-04-25 Julius Heinrich Joh Stephenson Schaltungsanordnung zur Fehlerortbestimmung an Kabeln und Leitungen.
US2581213A (en) * 1949-12-15 1952-01-01 Gen Electric Temperature responsive signaling and locating system
US3800216A (en) * 1971-08-11 1974-03-26 Dynatel Corp Cable fault locator apparatus and method with reference voltage comparison
CH547531A (de) * 1972-07-17 1974-03-29 Cerberus Ag Feuermeldeanlage.
US3991413A (en) * 1975-06-23 1976-11-09 Berger Philip H Constant current detector system
NO803157L (no) * 1979-10-26 1981-04-27 Raychem Corp Feildetekterende foeler.
AT370229B (de) * 1981-07-16 1983-03-10 Egger K Kunststoffwerk Schaltungsanordnung zur bestimmung von leckstellen in isolierten rohrleitungen
US4453159A (en) * 1981-09-28 1984-06-05 Thermon Manufacturing Company Self-monitoring heat tracing system

Also Published As

Publication number Publication date
EP0133748B1 (de) 1989-03-15
IN165617B (de) 1989-11-25
ES8704019A1 (es) 1987-03-01
IL72246A0 (en) 1984-10-31
GB8416672D0 (en) 1984-08-01
DK322384A (da) 1984-12-31
NO842648L (no) 1985-01-02
MX160660A (es) 1990-04-05
IN165616B (de) 1989-11-25
GB2143979B (en) 1987-10-21
ES533872A0 (es) 1987-03-01
NZ208683A (en) 1988-04-29
FI842636A (fi) 1984-12-31
IL72246A (en) 1989-09-28
DK322384D0 (da) 1984-06-29
DE3485767T2 (de) 1993-02-04
FI81681C (fi) 1990-11-12
FI842636A0 (fi) 1984-06-29
FI81681B (fi) 1990-07-31
GB2143979A (en) 1985-02-20
EP0133748A1 (de) 1985-03-06
HK94191A (en) 1991-11-29

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition