FR2403636A1 - Switch combination used in mines - is protected for safe operation in explosive atmospheres and has stepped slot locking flattened part of drive shaft - Google Patents

Switch combination used in mines - is protected for safe operation in explosive atmospheres and has stepped slot locking flattened part of drive shaft

Info

Publication number
FR2403636A1
FR2403636A1 FR7826826A FR7826826A FR2403636A1 FR 2403636 A1 FR2403636 A1 FR 2403636A1 FR 7826826 A FR7826826 A FR 7826826A FR 7826826 A FR7826826 A FR 7826826A FR 2403636 A1 FR2403636 A1 FR 2403636A1
Authority
FR
France
Prior art keywords
shaft
mines
protected
drive shaft
flattened part
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Withdrawn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
FR7826826A
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of FR2403636A1 publication Critical patent/FR2403636A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • H01H9/042—Explosion-proof cases
    • H01H9/045—Explosion-proof cases with interlocking mechanism between cover and operating mechanism

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

The device is used in underground mining, and has a pressure-proof case, an isolator operated by a shaft and a locking device for case cover and isolator. The isolator driving shaft (5) has a flat section (4) interacting with a link (1) operated by rotation of the locking element. It has a stepped slot (2) whose narrower part (3) corresponds to the thickness of the flattened part (5), of the shaft and the wider part (6) corresponds to the full dia. of the shaft. Rotation is impossible when the flattened part of the shaft is fitted into the narrow slot.
FR7826826A 1977-09-20 1978-09-19 Switch combination used in mines - is protected for safe operation in explosive atmospheres and has stepped slot locking flattened part of drive shaft Withdrawn FR2403636A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772742774 DE2742774A1 (en) 1977-09-20 1977-09-20 SWITCHGEAR COMBINATION WITH A LOCKING DEVICE

Publications (1)

Publication Number Publication Date
FR2403636A1 true FR2403636A1 (en) 1979-04-13

Family

ID=6019667

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7826826A Withdrawn FR2403636A1 (en) 1977-09-20 1978-09-19 Switch combination used in mines - is protected for safe operation in explosive atmospheres and has stepped slot locking flattened part of drive shaft

Country Status (2)

Country Link
DE (1) DE2742774A1 (en)
FR (1) FR2403636A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0038583A1 (en) * 1980-04-21 1981-10-28 BBC Aktiengesellschaft Brown, Boveri & Cie. Locking device for a switch mounted in a unit carrier withdrawable from a housing

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4300212C2 (en) * 1992-07-21 2001-05-23 Deilmann Haniel Gmbh Flameproof housing with junction boxes and safety lock

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1082656B (en) * 1957-10-26 1960-06-02 Stahl Maschinenfabrik R Locking mechanism for the screw cap of a pressure-resistant housing
DE1150743B (en) * 1958-05-17 1963-06-27 Wilhelm Vershoven Locking device for manually operated electrical switches in a pressure-resistant housing
US4031340A (en) * 1975-11-07 1977-06-21 Appleton Electric Company Defeater for mechanical safety interlock for covers of explosion-proof electrical housing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1082656B (en) * 1957-10-26 1960-06-02 Stahl Maschinenfabrik R Locking mechanism for the screw cap of a pressure-resistant housing
DE1150743B (en) * 1958-05-17 1963-06-27 Wilhelm Vershoven Locking device for manually operated electrical switches in a pressure-resistant housing
US4031340A (en) * 1975-11-07 1977-06-21 Appleton Electric Company Defeater for mechanical safety interlock for covers of explosion-proof electrical housing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0038583A1 (en) * 1980-04-21 1981-10-28 BBC Aktiengesellschaft Brown, Boveri & Cie. Locking device for a switch mounted in a unit carrier withdrawable from a housing

Also Published As

Publication number Publication date
DE2742774A1 (en) 1979-03-22

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Legal Events

Date Code Title Description
ST Notification of lapse