FR2402941A1 - High sensitivity mercury wetted switch blade - has contact area reduced to series of small discs surrounded by non-wettable area - Google Patents

High sensitivity mercury wetted switch blade - has contact area reduced to series of small discs surrounded by non-wettable area

Info

Publication number
FR2402941A1
FR2402941A1 FR7727317A FR7727317A FR2402941A1 FR 2402941 A1 FR2402941 A1 FR 2402941A1 FR 7727317 A FR7727317 A FR 7727317A FR 7727317 A FR7727317 A FR 7727317A FR 2402941 A1 FR2402941 A1 FR 2402941A1
Authority
FR
France
Prior art keywords
series
area
high sensitivity
switch blade
surrounded
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
FR7727317A
Other languages
French (fr)
Other versions
FR2402941B1 (en
Inventor
Michel Nicolas
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.)
Orega Circuits & Commutation
Original Assignee
Orega Circuits & Commutation
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 Orega Circuits & Commutation filed Critical Orega Circuits & Commutation
Priority to FR7727317A priority Critical patent/FR2402941A1/en
Publication of FR2402941A1 publication Critical patent/FR2402941A1/en
Application granted granted Critical
Publication of FR2402941B1 publication Critical patent/FR2402941B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
    • H01H1/08—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved wetted with mercury

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

The switch blades or leaves is for mercury wetted reed relays. In the device good conductivity at low currents is obtained by mercury forming a bridge between two such leaves normally sprung and controlled by an external 'H' field. The air gap between the blades (1) and hence the force required to pull them apart is minimized by reducing the contact or wetted area to a series of small raised or flat areas (7) less than 0.5 mm in dia. Each such area is surrounded by a non-wettable surface (6) which may be chrome oxide deposited electrolytically, the contact areas being created separately.
FR7727317A 1977-09-09 1977-09-09 High sensitivity mercury wetted switch blade - has contact area reduced to series of small discs surrounded by non-wettable area Granted FR2402941A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7727317A FR2402941A1 (en) 1977-09-09 1977-09-09 High sensitivity mercury wetted switch blade - has contact area reduced to series of small discs surrounded by non-wettable area

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7727317A FR2402941A1 (en) 1977-09-09 1977-09-09 High sensitivity mercury wetted switch blade - has contact area reduced to series of small discs surrounded by non-wettable area

Publications (2)

Publication Number Publication Date
FR2402941A1 true FR2402941A1 (en) 1979-04-06
FR2402941B1 FR2402941B1 (en) 1981-05-22

Family

ID=9195212

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7727317A Granted FR2402941A1 (en) 1977-09-09 1977-09-09 High sensitivity mercury wetted switch blade - has contact area reduced to series of small discs surrounded by non-wettable area

Country Status (1)

Country Link
FR (1) FR2402941A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0030471A1 (en) * 1979-12-11 1981-06-17 Fujitsu Limited Mercury switch
WO1990002409A1 (en) * 1988-08-26 1990-03-08 Radomir Janus Switch with contacts wetted with mercury
WO2005066987A1 (en) * 2003-12-31 2005-07-21 Honeywell International Inc. Self-healing liquid contact switch

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0030471A1 (en) * 1979-12-11 1981-06-17 Fujitsu Limited Mercury switch
WO1990002409A1 (en) * 1988-08-26 1990-03-08 Radomir Janus Switch with contacts wetted with mercury
US7189934B2 (en) 2003-11-13 2007-03-13 Honeywell International Inc. Self-healing liquid contact switch
WO2005066987A1 (en) * 2003-12-31 2005-07-21 Honeywell International Inc. Self-healing liquid contact switch

Also Published As

Publication number Publication date
FR2402941B1 (en) 1981-05-22

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Legal Events

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ST Notification of lapse