B22C19/00—Components or accessories for moulding machines
B22C19/06—Devices for rapping or loosening the pattern
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
Landscapes
Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
Architecture
(AREA)
Civil Engineering
(AREA)
Structural Engineering
(AREA)
Apparatuses For Generation Of Mechanical Vibrations
(AREA)
Dispositif autorisant le controle et l'action d'effets vibratoires sur des machines et materiels en vue notamment du traitement de produits destines a etre fibres, tasses et compactes