DE2040762A1 - Sicherheitsgeraet - Google Patents

Sicherheitsgeraet

Info

Publication number
DE2040762A1
DE2040762A1 DE19702040762 DE2040762A DE2040762A1 DE 2040762 A1 DE2040762 A1 DE 2040762A1 DE 19702040762 DE19702040762 DE 19702040762 DE 2040762 A DE2040762 A DE 2040762A DE 2040762 A1 DE2040762 A1 DE 2040762A1
Authority
DE
Germany
Prior art keywords
pressure
fluid
pressure sensor
tubes
filled
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.)
Pending
Application number
DE19702040762
Other languages
German (de)
English (en)
Inventor
Nichols Edward W
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 DE2040762A1 publication Critical patent/DE2040762A1/de
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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)
  • Burglar Alarm Systems (AREA)
  • Measuring Fluid Pressure (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Geophysics And Detection Of Objects (AREA)
DE19702040762 1969-09-15 1970-08-17 Sicherheitsgeraet Pending DE2040762A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US85796169A 1969-09-15 1969-09-15

Publications (1)

Publication Number Publication Date
DE2040762A1 true DE2040762A1 (de) 1971-04-15

Family

ID=25327118

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19702040762 Pending DE2040762A1 (de) 1969-09-15 1970-08-17 Sicherheitsgeraet

Country Status (7)

Country Link
US (1) US3631439A (enExample)
JP (1) JPS4939021B1 (enExample)
BE (1) BE756000A (enExample)
DE (1) DE2040762A1 (enExample)
FR (1) FR2061431A5 (enExample)
GB (1) GB1272908A (enExample)
IL (1) IL35287A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2931179A1 (de) * 1978-08-24 1980-03-06 Italcontrol Srl Verbesserungen an elementen von meldeeinrichtungen des eindringens in eine geschlossene flaeche

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3753260A (en) * 1971-10-04 1973-08-14 Westinghouse Electric Corp Pulse reflection test means for balanced pressure surveillance detector
US3699398A (en) * 1971-10-12 1972-10-17 Reed A Newmeyer Sensor for vehicular traffic counters
US3868667A (en) * 1972-04-06 1975-02-25 Us Army Intruder detection system embodying a bimorph transducer
AT375466B (de) * 1977-07-27 1984-08-10 List Hans Messwertaufnehmer mit einem piezoelektrischen messelement
JPS5473514U (enExample) * 1977-11-04 1979-05-25
USD318646S (en) 1988-12-30 1991-07-30 Honeywell Inc. Differential pressure transducer
US5089671A (en) * 1989-12-15 1992-02-18 Val Ranetkins Underwater zoom switch
US7122944B2 (en) * 2004-01-16 2006-10-17 Tangidyne Corporation Signal generation system and method for generating signals
CN104880738B (zh) * 2015-06-16 2018-04-06 中国矿业大学 模拟探测煤巷突出参数与突出的关系及规律的方法与装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1986479A (en) * 1929-12-27 1935-01-01 Automatic Sprinkler Co Means for supervising pneumatic fire alarm systems
BE472235A (enExample) * 1946-09-06
US2582483A (en) * 1947-03-13 1952-01-15 Theodore W Hallerberg Pressure sensitive switch
US2868300A (en) * 1954-12-31 1959-01-13 Specialties Dev Corp Explosion suppression system
BE624894A (enExample) * 1962-05-03
US3307052A (en) * 1964-04-06 1967-02-28 Frank W Neilson Piezoelectric stress gage
US3438021A (en) * 1965-07-26 1969-04-08 Westinghouse Electric Corp Perimeter intrusion alarm
US3359386A (en) * 1965-10-11 1967-12-19 Howard Electric Company Sludge exclusion diaphragm switch
US3336573A (en) * 1966-09-14 1967-08-15 Texaco Inc Crystal pressure sensitive geophones for use in soft earth

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2931179A1 (de) * 1978-08-24 1980-03-06 Italcontrol Srl Verbesserungen an elementen von meldeeinrichtungen des eindringens in eine geschlossene flaeche

Also Published As

Publication number Publication date
IL35287A (en) 1972-12-29
BE756000A (fr) 1971-02-15
US3631439A (en) 1971-12-28
IL35287A0 (en) 1970-11-30
GB1272908A (en) 1972-05-03
FR2061431A5 (enExample) 1971-06-18
JPS4939021B1 (enExample) 1974-10-22

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