BE725433A - - Google Patents

Info

Publication number
BE725433A
BE725433A BE725433DA BE725433A BE 725433 A BE725433 A BE 725433A BE 725433D A BE725433D A BE 725433DA BE 725433 A BE725433 A BE 725433A
Authority
BE
Belgium
Prior art keywords
emi
rotor
unbalance
pipe
ducts
Prior art date
Application number
Other languages
English (en)
French (fr)
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
Priority claimed from DE19671558863 external-priority patent/DE1558863A1/de
Priority claimed from DE19681758611 external-priority patent/DE1758611A1/de
Priority claimed from DE19681801667 external-priority patent/DE1801667A1/de
Priority claimed from DE19681810403 external-priority patent/DE1810403A1/de
Application filed filed Critical
Publication of BE725433A publication Critical patent/BE725433A/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/06—Solidifying concrete, e.g. by application of vacuum before hardening
    • E04G21/08—Internal vibrators, e.g. needle vibrators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/18—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency wherein the vibrator is actuated by pressure fluid
    • B06B1/186—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency wherein the vibrator is actuated by pressure fluid operating with rotary unbalanced masses
    • 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
    • E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Civil Engineering (AREA)
  • Centrifugal Separators (AREA)
BE725433D 1967-12-13 1968-12-13 BE725433A (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19671558863 DE1558863A1 (de) 1967-12-13 1967-12-13 Hydrodynamischer Vibrator
DE19681758611 DE1758611A1 (de) 1967-04-28 1968-07-16 Ausbaueinheit fuer schreitenden Strebausbau
DE19681801667 DE1801667A1 (de) 1968-07-16 1968-10-07 Hydrodynamischer Vibrator
DE19681810403 DE1810403A1 (de) 1968-11-22 1968-11-22 Vibrator zum verdichten von Beton u.dgl.

Publications (1)

Publication Number Publication Date
BE725433A true BE725433A (de) 1969-05-16

Family

ID=27430572

Family Applications (1)

Application Number Title Priority Date Filing Date
BE725433D BE725433A (de) 1967-12-13 1968-12-13

Country Status (2)

Country Link
BE (1) BE725433A (de)
FR (1) FR1596063A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE394400B (sv) * 1976-02-27 1977-06-27 N E Strom Vibratoranordning

Also Published As

Publication number Publication date
FR1596063A (de) 1970-06-15

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