FR1440889A - Hitch for walking support - Google Patents

Hitch for walking support

Info

Publication number
FR1440889A
FR1440889A FR15292A FR15292A FR1440889A FR 1440889 A FR1440889 A FR 1440889A FR 15292 A FR15292 A FR 15292A FR 15292 A FR15292 A FR 15292A FR 1440889 A FR1440889 A FR 1440889A
Authority
FR
France
Prior art keywords
hitch
walking support
walking
support
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
FR15292A
Other languages
French (fr)
Inventor
Konrad Grebe
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
Priority to FR15292A priority Critical patent/FR1440889A/en
Application granted granted Critical
Publication of FR1440889A publication Critical patent/FR1440889A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
    • E21D23/0017—Pile type supports
    • E21D23/0021—Pile type supports comprising two walking elements
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E21D23/0409—Aligning or guiding means for the supports or for the constitutive parts of the supports

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
FR15292A 1965-04-30 1965-04-30 Hitch for walking support Expired FR1440889A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR15292A FR1440889A (en) 1965-04-30 1965-04-30 Hitch for walking support

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR15292A FR1440889A (en) 1965-04-30 1965-04-30 Hitch for walking support

Publications (1)

Publication Number Publication Date
FR1440889A true FR1440889A (en) 1966-06-03

Family

ID=8577686

Family Applications (1)

Application Number Title Priority Date Filing Date
FR15292A Expired FR1440889A (en) 1965-04-30 1965-04-30 Hitch for walking support

Country Status (1)

Country Link
FR (1) FR1440889A (en)

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