FR2300407A1 - Electric burglar alarm switch - has metal ball which is sensitive to displacement and which is arranged to bridge gap between contacts - Google Patents

Electric burglar alarm switch - has metal ball which is sensitive to displacement and which is arranged to bridge gap between contacts

Info

Publication number
FR2300407A1
FR2300407A1 FR7503570A FR7503570A FR2300407A1 FR 2300407 A1 FR2300407 A1 FR 2300407A1 FR 7503570 A FR7503570 A FR 7503570A FR 7503570 A FR7503570 A FR 7503570A FR 2300407 A1 FR2300407 A1 FR 2300407A1
Authority
FR
France
Prior art keywords
contacts
displacement
sensitive
burglar alarm
metal ball
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
Application number
FR7503570A
Other languages
French (fr)
Other versions
FR2300407B3 (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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7503570A priority Critical patent/FR2300407A1/en
Publication of FR2300407A1 publication Critical patent/FR2300407A1/en
Application granted granted Critical
Publication of FR2300407B3 publication Critical patent/FR2300407B3/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/02—Switches operated by change of position, inclination or orientation of the switch itself in relation to gravitational field

Landscapes

  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

An electric switch for a burglar alarm can close a circuit when it is subjected to a displacement. It has a case (2) made of insulating material and two electric contacts (3, 4). One of the contacts (3) is part of the case (2) and is spherical. The other contact or set of contacts (4) is part of the sides of the case (2) which is prismatic. Normally, the ball (5) can take-up one of several stable position when it is held by a corner and the spherical end of the case (2). In this normal position, there is no circuit between the contacts (3, 4). If the switch is subjected to a displacement, the ball can bridge the space between the contacts (3, 4) and set off an alarm.
FR7503570A 1975-02-05 1975-02-05 Electric burglar alarm switch - has metal ball which is sensitive to displacement and which is arranged to bridge gap between contacts Granted FR2300407A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7503570A FR2300407A1 (en) 1975-02-05 1975-02-05 Electric burglar alarm switch - has metal ball which is sensitive to displacement and which is arranged to bridge gap between contacts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7503570A FR2300407A1 (en) 1975-02-05 1975-02-05 Electric burglar alarm switch - has metal ball which is sensitive to displacement and which is arranged to bridge gap between contacts

Publications (2)

Publication Number Publication Date
FR2300407A1 true FR2300407A1 (en) 1976-09-03
FR2300407B3 FR2300407B3 (en) 1977-10-21

Family

ID=9150784

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7503570A Granted FR2300407A1 (en) 1975-02-05 1975-02-05 Electric burglar alarm switch - has metal ball which is sensitive to displacement and which is arranged to bridge gap between contacts

Country Status (1)

Country Link
FR (1) FR2300407A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4318245A (en) * 1980-01-22 1982-03-09 The Quaker Oats Company Vocalizing apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4318245A (en) * 1980-01-22 1982-03-09 The Quaker Oats Company Vocalizing apparatus

Also Published As

Publication number Publication date
FR2300407B3 (en) 1977-10-21

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Legal Events

Date Code Title Description
ST Notification of lapse