GB1389273A - Pulse reflection test means for pressure surveillance detector - Google Patents

Pulse reflection test means for pressure surveillance detector

Info

Publication number
GB1389273A
GB1389273A GB3979272A GB3979272A GB1389273A GB 1389273 A GB1389273 A GB 1389273A GB 3979272 A GB3979272 A GB 3979272A GB 3979272 A GB3979272 A GB 3979272A GB 1389273 A GB1389273 A GB 1389273A
Authority
GB
United Kingdom
Prior art keywords
pressure
fault
hose
hoses
detection circuit
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
Application number
GB3979272A
Other languages
English (en)
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.)
Westinghouse Electric Corp
Original Assignee
Westinghouse Electric 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
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB1389273A publication Critical patent/GB1389273A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/20—Actuation by change of fluid pressure

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Measuring Fluid Pressure (AREA)
  • Burglar Alarm Systems (AREA)
GB3979272A 1971-10-04 1972-08-25 Pulse reflection test means for pressure surveillance detector Expired GB1389273A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18610971A 1971-10-04 1971-10-04

Publications (1)

Publication Number Publication Date
GB1389273A true GB1389273A (en) 1975-04-03

Family

ID=22683692

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3979272A Expired GB1389273A (en) 1971-10-04 1972-08-25 Pulse reflection test means for pressure surveillance detector

Country Status (6)

Country Link
US (1) US3753260A (enExample)
JP (1) JPS4845280A (enExample)
DE (1) DE2247834A1 (enExample)
FR (1) FR2161906B1 (enExample)
GB (1) GB1389273A (enExample)
NL (1) NL7213353A (enExample)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935567A (en) * 1974-04-08 1976-01-27 Reynolds David E Leak detection apparatus
US4187501A (en) * 1977-10-07 1980-02-05 The United States Of America As Represented By The Secretary Of The Army Electronic intruder detection system
US4400695A (en) * 1977-10-07 1983-08-23 The United States Of America As Represented By The Secretary Of The Army Electronic intruder detection system
DE2909112A1 (de) * 1979-03-08 1980-09-18 Sachs Systemtechnik Gmbh Alarmanlage
US4566008A (en) * 1982-06-29 1986-01-21 Solid State Devices, Inc. Fault detecting circuit and method for a vehicle detector system
US4480473A (en) * 1983-05-26 1984-11-06 General Motors Corporation Acoustic inspection method
US5406258A (en) * 1994-04-26 1995-04-11 The United States Of America As Represented By The United States Department Of Energy Pressurized security barrier and alarm system
ITMI20011083A1 (it) * 2001-05-23 2002-11-23 Iniziativa Ct Sud S R L Dispositivo per l'igiene dentale
CN103556681A (zh) * 2013-11-15 2014-02-05 卢云飞 供水管网区间压力智能补偿系统

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3358788A (en) * 1963-07-25 1967-12-19 Dresser Ind Method and apparatus for acoustic cement bond logging
US3304546A (en) * 1964-11-16 1967-02-14 Puregas Equipment Corp Leak detector for pressurized cable
US3438021A (en) * 1965-07-26 1969-04-08 Westinghouse Electric Corp Perimeter intrusion alarm
US3346067A (en) * 1966-03-16 1967-10-10 Bell Telephone Labor Inc System for determining acoustic reflection coefficients
FR1480363A (fr) * 1966-03-31 1967-05-12 Trefimetaux Procédé et dispositif pour la détection automatique des fuites sur les câbles électriques à pression de liquide
GB1129428A (en) * 1967-06-23 1968-10-02 Standard Telephones Cables Ltd Flow supervisory arrangement
IL29843A (en) * 1967-08-24 1971-07-28 Westinghouse Electric Corp Intruder detecting apparatus
US3600674A (en) * 1969-04-02 1971-08-17 Chevron Res Method of determining leaks from buried pipelines using a time-sharing transmission line
BE756000A (fr) * 1969-09-15 1971-02-15 Westinghouse Electric Corp Appareil de securite perfectionne sensible a la pression

Also Published As

Publication number Publication date
FR2161906A1 (enExample) 1973-07-13
US3753260A (en) 1973-08-14
NL7213353A (enExample) 1973-04-06
DE2247834A1 (de) 1973-04-12
FR2161906B1 (enExample) 1977-07-29
JPS4845280A (enExample) 1973-06-28

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee