FR2263591A1 - Electric light flashing unit - uses expansion and contraction of air due to heating, and mercury switch - Google Patents

Electric light flashing unit - uses expansion and contraction of air due to heating, and mercury switch

Info

Publication number
FR2263591A1
FR2263591A1 FR7407999A FR7407999A FR2263591A1 FR 2263591 A1 FR2263591 A1 FR 2263591A1 FR 7407999 A FR7407999 A FR 7407999A FR 7407999 A FR7407999 A FR 7407999A FR 2263591 A1 FR2263591 A1 FR 2263591A1
Authority
FR
France
Prior art keywords
container
heating
contraction
mercury
electric light
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.)
Withdrawn
Application number
FR7407999A
Other languages
French (fr)
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.)
LAURENT PHILIPPE FR
Original Assignee
LAURENT PHILIPPE FR
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 LAURENT PHILIPPE FR filed Critical LAURENT PHILIPPE FR
Priority to FR7407999A priority Critical patent/FR2263591A1/en
Publication of FR2263591A1 publication Critical patent/FR2263591A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H61/00—Electrothermal relays
    • H01H61/06—Self-interrupters, i.e. with periodic or other repetitive opening and closing of contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H29/00—Switches having at least one liquid contact
    • H01H29/28—Switches having at least one liquid contact with level of surface of contact liquid displaced by fluid pressure

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Pressure Vessels And Lids Thereof (AREA)

Abstract

The unit has a container (1) with an opening (4) and made of an electrically conductive material. The container (1) holds a fluid, eg. a non-electrically conductive gas such as air and is heated by an electric current if the container may provide sufficient electric resistance, or a wire resistor may be wound around the container. A liquid conductor, such as mercury (3), closes the opening (4) in the container (1) by capillary action. When current flows, heating of the container (1) provides expansion of the air in the container, and an increase of pressure which pushes the mercury away from the container (1), thus opening the circuit. When current is not flowing, the mercury in contact with the container (1) closes the circuit.
FR7407999A 1974-03-08 1974-03-08 Electric light flashing unit - uses expansion and contraction of air due to heating, and mercury switch Withdrawn FR2263591A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7407999A FR2263591A1 (en) 1974-03-08 1974-03-08 Electric light flashing unit - uses expansion and contraction of air due to heating, and mercury switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7407999A FR2263591A1 (en) 1974-03-08 1974-03-08 Electric light flashing unit - uses expansion and contraction of air due to heating, and mercury switch

Publications (1)

Publication Number Publication Date
FR2263591A1 true FR2263591A1 (en) 1975-10-03

Family

ID=9136050

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7407999A Withdrawn FR2263591A1 (en) 1974-03-08 1974-03-08 Electric light flashing unit - uses expansion and contraction of air due to heating, and mercury switch

Country Status (1)

Country Link
FR (1) FR2263591A1 (en)

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Legal Events

Date Code Title Description
ST Notification of lapse