EP 1614507 A2 20060111 - Rolling hammer drill
Title (en)
Rolling hammer drill
Title (de)
Wälzbohrhammer
Title (fr)
Marteau perforateur à roulement
Publication
Application
Priority
CA 2475001 A 20040708
Abstract (en)
A hammer drill with rolling contact at the contact surfaces for transmission of axial force between a drive shaft (18) and wave race (42). By using roller bearings (38), line contact is obtained. The area of contact is thus close to zero as opposed to a relatively large area in engagement systems using toothed surfaces. Use of point or line contact reduces heat generation and reduces energy loss due to friction.
IPC 8 full level
B25D 11/10 (2006.01); B25D 17/00 (2006.01)
CPC (source: EP KR)
B25D 11/104 (2013.01 - EP KR); B25D 17/005 (2013.01 - EP KR); B25D 2211/064 (2013.01 - EP KR)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1614507 A2 20060111; EP 1614507 A3 20090325; AU 2005202301 A1 20060119; BR PI0502201 A 20060221; CA 2475001 A1 20060108; CN 1718375 A 20060111; EA 007401 B1 20061027; EA 200500838 A1 20060224; JP 2006021317 A 20060126; KR 100706119 B1 20070412; KR 20060046422 A 20060517; TW 200605994 A 20060216
DOCDB simple family (application)
EP 05012334 A 20050608; AU 2005202301 A 20050530; BR PI0502201 A 20050613; CA 2475001 A 20040708; CN 200510082004 A 20050624; EA 200500838 A 20050616; JP 2005191669 A 20050630; KR 20050050032 A 20050610; TW 94118182 A 20050602