ES8405982A1 - Antitheft alarm device e.g. for suitcase - Google Patents
Antitheft alarm device e.g. for suitcaseInfo
- Publication number
- ES8405982A1 ES8405982A1 ES518435A ES518435A ES8405982A1 ES 8405982 A1 ES8405982 A1 ES 8405982A1 ES 518435 A ES518435 A ES 518435A ES 518435 A ES518435 A ES 518435A ES 8405982 A1 ES8405982 A1 ES 8405982A1
- Authority
- ES
- Spain
- Prior art keywords
- switches
- movement
- conductive sphere
- response
- cause
- 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
Links
Landscapes
- Burglar Alarm Systems (AREA)
Abstract
EP--98913 A (+22.3.82, 13.4.82, 23.8.82 (2), 14.10.82, 7.12.82, 15.12.82, 21.12.82 (3) 24.12.82 (2) -ES- 510664, 511397, 515186, 515187, 516506, 518012 518238, 518343 (5) (6), 518567, 518568) The device is disposed on or in an object to the protected and the conductive sphere is caused to be positioned in a given zone (D1) where it causes closure of either switch of a pair of switches but not both switches simultaneously. The interval between the intants of closure of the two switches represents the amplitude and rapidity of movement of the object. Slight displacements or vibrations will not cause both switches to close due to the distance separating them but sudden violent displacements caused by a bag being snatched will cause an alarm. - The switches may be constituted by interdigitated printed conductors on a circuit board, the spacing between the conductors being such as to allow them to be bridged by the conductive sphere. Various forms of electronic monitoring circuit are described to trigger an alarm device in response to the two switches being closed in response to violent movement of the conductive sphere, using bistable circuits. The path has zones of differing curvature to provide a variation of the movement sensitivity. (4/55)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES518435A ES518435A0 (en) | 1982-12-21 | 1982-12-21 | COMPLEMENT FOR MOTION SENSORS. |
EP83101777A EP0098913A2 (en) | 1982-02-23 | 1983-02-23 | Movement sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES518435A ES518435A0 (en) | 1982-12-21 | 1982-12-21 | COMPLEMENT FOR MOTION SENSORS. |
Publications (2)
Publication Number | Publication Date |
---|---|
ES8405982A1 true ES8405982A1 (en) | 1984-02-01 |
ES518435A0 ES518435A0 (en) | 1984-02-01 |
Family
ID=8485118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES518435A Granted ES518435A0 (en) | 1982-02-23 | 1982-12-21 | COMPLEMENT FOR MOTION SENSORS. |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES518435A0 (en) |
-
1982
- 1982-12-21 ES ES518435A patent/ES518435A0/en active Granted
Also Published As
Publication number | Publication date |
---|---|
ES518435A0 (en) | 1984-02-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19971001 |