FR853977A - Improvements to portable explosion-proof lamps - Google Patents

Improvements to portable explosion-proof lamps

Info

Publication number
FR853977A
FR853977A FR853977DA FR853977A FR 853977 A FR853977 A FR 853977A FR 853977D A FR853977D A FR 853977DA FR 853977 A FR853977 A FR 853977A
Authority
FR
France
Prior art keywords
proof lamps
portable explosion
explosion
portable
lamps
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)
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.)
TELEPHONES LE LAS
Original Assignee
TELEPHONES LE LAS
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 TELEPHONES LE LAS filed Critical TELEPHONES LE LAS
Application granted granted Critical
Publication of FR853977A publication Critical patent/FR853977A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V25/00—Safety devices structurally associated with lighting devices
    • F21V25/02—Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken
    • F21V25/06—Safety devices structurally associated with lighting devices coming into action when lighting device is disturbed, dismounted, or broken feeding a quenching fluid to the light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V25/00—Safety devices structurally associated with lighting devices
    • F21V25/12—Flameproof or explosion-proof arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
FR853977D 1938-11-29 1938-11-29 Improvements to portable explosion-proof lamps Expired FR853977A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR853977T 1938-11-29

Publications (1)

Publication Number Publication Date
FR853977A true FR853977A (en) 1940-04-02

Family

ID=9327393

Family Applications (1)

Application Number Title Priority Date Filing Date
FR853977D Expired FR853977A (en) 1938-11-29 1938-11-29 Improvements to portable explosion-proof lamps

Country Status (1)

Country Link
FR (1) FR853977A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517478A (en) * 1945-05-01 1950-08-01 Metram J Griffin Explosion-proof lighting unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517478A (en) * 1945-05-01 1950-08-01 Metram J Griffin Explosion-proof lighting unit

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