FR2316671A1 - Detecteur de la fracture d'un corps solide - Google Patents
Detecteur de la fracture d'un corps solideInfo
- Publication number
- FR2316671A1 FR2316671A1 FR7618434A FR7618434A FR2316671A1 FR 2316671 A1 FR2316671 A1 FR 2316671A1 FR 7618434 A FR7618434 A FR 7618434A FR 7618434 A FR7618434 A FR 7618434A FR 2316671 A1 FR2316671 A1 FR 2316671A1
- Authority
- FR
- France
- Prior art keywords
- solid body
- body fracture
- fracture detector
- detector
- solid
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/04—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses for indicating maximum value
- G01P15/06—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses for indicating maximum value using members subjected to a permanent deformation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/02—Mechanical actuation
- G08B13/04—Mechanical actuation by breaking of glass
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/14—Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch
- H01H35/144—Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch operated by vibration
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1975084126U JPS6239501Y2 (fr) | 1975-06-18 | 1975-06-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2316671A1 true FR2316671A1 (fr) | 1977-01-28 |
FR2316671B1 FR2316671B1 (fr) | 1983-01-28 |
Family
ID=13821810
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7618434A Granted FR2316671A1 (fr) | 1975-06-18 | 1976-06-17 | Detecteur de la fracture d'un corps solide |
Country Status (5)
Country | Link |
---|---|
US (1) | US4122445A (fr) |
JP (1) | JPS6239501Y2 (fr) |
DE (1) | DE2627513C2 (fr) |
FR (1) | FR2316671A1 (fr) |
GB (1) | GB1559704A (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4559528A (en) * | 1983-07-14 | 1985-12-17 | Don E. Berger | Ornamental vibration sensor device for burglar alarm system |
US4496809A (en) * | 1983-10-17 | 1985-01-29 | A B C Auto Alarms, Inc. | Vibration sensitive trip switch for vehicle alarm system of the like |
US4690242A (en) * | 1986-11-19 | 1987-09-01 | Mark David S | Sound actuated switch |
DE4312692C2 (de) * | 1993-04-20 | 1998-07-02 | Richter Thomas | Meßvorrichtung zur Erfassung von Schwingungen, Impulsen, Stößen, Beschleunigungen oder seismischen Erregungen und Verwendungen dieser Meßvorrichtung |
ITMI20032386A1 (it) * | 2003-12-05 | 2005-06-06 | Microhard Srl | Dispositivo rilevatore di variazione della luminosita' |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1213168A (en) * | 1967-09-07 | 1970-11-18 | Peter John Eyre | Vibration-responsive detector device for alarm systems |
FR2360944A1 (fr) * | 1976-08-02 | 1978-03-03 | Greene Ted | Detecteur d'intrusion |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2741675A (en) * | 1952-10-22 | 1956-04-10 | Holmes Electric Protective Com | Vibration detecting device |
US2885504A (en) * | 1955-08-18 | 1959-05-05 | Yurtz Joseph Gregory | Automobile theft alarm |
DE1953931U (de) * | 1966-11-15 | 1967-01-19 | Paffrath & Co G M B H | Alarm ausloesende kontaktvorrichtung gegen diebstahl, insbesondere fuer kraftfahrzeuge. |
US3392246A (en) * | 1967-05-17 | 1968-07-09 | Guardian Industries | Vibration detection device |
US3899784A (en) * | 1973-05-17 | 1975-08-12 | Omni Spectra Inc | Glass breakage detector |
US3973095A (en) * | 1974-04-05 | 1976-08-03 | Greene Ted R | Intrusion detector sensitive to resonant frequency of breaking glass |
-
1975
- 1975-06-18 JP JP1975084126U patent/JPS6239501Y2/ja not_active Expired
-
1976
- 1976-06-17 FR FR7618434A patent/FR2316671A1/fr active Granted
- 1976-06-18 GB GB25408/76A patent/GB1559704A/en not_active Expired
- 1976-06-18 US US05/697,693 patent/US4122445A/en not_active Expired - Lifetime
- 1976-06-18 DE DE2627513A patent/DE2627513C2/de not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1213168A (en) * | 1967-09-07 | 1970-11-18 | Peter John Eyre | Vibration-responsive detector device for alarm systems |
FR2360944A1 (fr) * | 1976-08-02 | 1978-03-03 | Greene Ted | Detecteur d'intrusion |
Also Published As
Publication number | Publication date |
---|---|
US4122445A (en) | 1978-10-24 |
FR2316671B1 (fr) | 1983-01-28 |
JPS6239501Y2 (fr) | 1987-10-08 |
DE2627513A1 (de) | 1977-01-13 |
GB1559704A (en) | 1980-01-23 |
DE2627513C2 (de) | 1982-03-04 |
JPS51162688U (fr) | 1976-12-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse | ||
AR | Application made for restoration | ||
BR | Restoration of rights | ||
ST | Notification of lapse |