EP 0940236 A2 19990908 - Method and apparatus for drilling dewatering holes into a hollow-core slab
Title (en)
Method and apparatus for drilling dewatering holes into a hollow-core slab
Title (de)
Verfahren und Vorrichtung zum Bohren von Entwasserungslöchern in einem Hohlkernplatte
Title (fr)
Procédé et dispositif pour forer des trous de déshydratation dans des plaques creuses
Publication
Application
Priority
FI 980490 A 19980304
Abstract (en)
Method and apparatus for drilling dewatering holes into the lower surface of a concrete hollow-core slab (5). The apparatus comprises at least two drills (10) connected with a slab lifting crane. The drills (10) are attached to a detachable beam (9), and the apparatus is provided with at least two interchangeable beams with different mutual distances between the drills. The beam (9) is fastened to the apparatus by means of a quick-release fastener. <IMAGE>
IPC 1-7
IPC 8 full level
B28D 1/14 (2006.01)
CPC (source: EP)
B28D 1/14 (2013.01)
Designated contracting state (EPC)
AT BE DE DK ES FI FR GB IT NL PT SE
DOCDB simple family (publication)
EP 0940236 A2 19990908; EP 0940236 A3 20020109; EP 0940236 B1 20041110; AT E281911 T1 20041115; DE 69921711 D1 20041216; DE 69921711 T2 20051103; DK 0940236 T3 20041227; ES 2232096 T3 20050516; FI 109285 B 20020628; FI 980490 A0 19980304; FI 980490 A 19990905
DOCDB simple family (application)
EP 99660028 A 19990217; AT 99660028 T 19990217; DE 69921711 T 19990217; DK 99660028 T 19990217; ES 99660028 T 19990217; FI 980490 A 19980304