FR648180A - Pneumatic device for opening and closing an electrical circuit - Google Patents

Pneumatic device for opening and closing an electrical circuit

Info

Publication number
FR648180A
FR648180A FR648180DA FR648180A FR 648180 A FR648180 A FR 648180A FR 648180D A FR648180D A FR 648180DA FR 648180 A FR648180 A FR 648180A
Authority
FR
France
Prior art keywords
closing
opening
electrical circuit
pneumatic device
pneumatic
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
Application number
Other languages
French (fr)
Inventor
Marcel Bergoin
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 filed Critical
Application granted granted Critical
Publication of FR648180A publication Critical patent/FR648180A/en
Expired 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
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/38—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by piston and cylinder

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Driven Valves (AREA)
FR648180D 1927-06-11 1927-06-11 Pneumatic device for opening and closing an electrical circuit Expired FR648180A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR648180T 1927-06-11

Publications (1)

Publication Number Publication Date
FR648180A true FR648180A (en) 1928-12-06

Family

ID=9002508

Family Applications (1)

Application Number Title Priority Date Filing Date
FR648180D Expired FR648180A (en) 1927-06-11 1927-06-11 Pneumatic device for opening and closing an electrical circuit

Country Status (3)

Country Link
US (1) US1911259A (en)
FR (1) FR648180A (en)
GB (1) GB292078A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2853574A (en) * 1956-01-18 1958-09-23 Hughes Aircraft Co Magnetic tape position indicating device
US2824182A (en) * 1957-01-09 1958-02-18 Royal Mcbee Corp Pneumatoelectric record sensing device
US2900468A (en) * 1957-03-04 1959-08-18 Pacific Mills Seam detector
US3057974A (en) * 1959-03-30 1962-10-09 Digitronics Corp Information sensing apparatus

Also Published As

Publication number Publication date
US1911259A (en) 1933-05-30
GB292078A (en) 1929-10-09

Similar Documents

Publication Publication Date Title
FR648180A (en) Pneumatic device for opening and closing an electrical circuit
FR35684E (en) Pneumatic device for opening and closing an electrical circuit
FR592531A (en) Automatic opening and closing device for boxes
FR652033A (en) Closing and opening device for cases
FR559108A (en) Box and device for easy opening and closing
FR568975A (en) Automatic device for opening and closing an electrical circuit at set times
FR644411A (en) Mechanical device for automatic closing and opening, at set times, of electrical circuits
FR546074A (en) Closing device for boxes and powder bottles
FR637670A (en) Static device for automatic and progressive closing of electrical circuits
FR645714A (en) Docile and hermetic closing device for various containers
FR663051A (en) Mold opening device
FR689448A (en) Opening and closing device for refrigeration presses
FR584516A (en) Closing device of an electrical circuit
FR590626A (en) Device facilitating the opening of boxes
FR667700A (en) Device for the sudden and forced opening and closing of electrical circuits applicable to switches, switches, etc.
FR643292A (en) Safety closing device, in particular for enclosures and boxes
FR591973A (en) Device for closing or opening an electrical circuit for a determined time
FR719178A (en) Device for automatically opening and closing an electrical circuit
FR625004A (en) Opening device for boxes
FR583693A (en) Mechanical device for automatically controlling the closing or opening of an electrical circuit
FR628233A (en) Device for opening and closing skylights
FR668323A (en) Device for the sudden and forced opening and closing of electrical circuits applicable in particular to switches, switches, etc.
FR650526A (en) Device for closing boxes
FR645123A (en) Device allowing rapid opening of cans
FR629063A (en) Device for closing electrical circuits at specific times