FR492798A - Improvements in ventilation ducts for mining and other work - Google Patents

Improvements in ventilation ducts for mining and other work

Info

Publication number
FR492798A
FR492798A FR492798DA FR492798A FR 492798 A FR492798 A FR 492798A FR 492798D A FR492798D A FR 492798DA FR 492798 A FR492798 A FR 492798A
Authority
FR
France
Prior art keywords
mining
work
ventilation ducts
ducts
ventilation
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
Stanley Nettleton
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR492798A publication Critical patent/FR492798A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
    • E21F1/04—Air ducts
    • E21F1/06—Duct connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L31/00—Arrangements for connecting hoses to one another or to flexible sleeves
FR492798D 1914-11-04 1918-11-08 Improvements in ventilation ducts for mining and other work Expired FR492798A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB492798X 1914-11-04

Publications (1)

Publication Number Publication Date
FR492798A true FR492798A (en) 1919-07-18

Family

ID=1528622

Family Applications (1)

Application Number Title Priority Date Filing Date
FR492798D Expired FR492798A (en) 1914-11-04 1918-11-08 Improvements in ventilation ducts for mining and other work

Country Status (1)

Country Link
FR (1) FR492798A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4014569A (en) * 1972-01-24 1977-03-29 Coal Industry (Patents) Limited Flexible ducting joint
US5948509A (en) * 1996-08-16 1999-09-07 Felson; Raymond Murray Non collapsing pre-assembled flexible duct connector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4014569A (en) * 1972-01-24 1977-03-29 Coal Industry (Patents) Limited Flexible ducting joint
US5948509A (en) * 1996-08-16 1999-09-07 Felson; Raymond Murray Non collapsing pre-assembled flexible duct connector

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