EP 3478562 A1 20190508 - GEAR FOR A BICYCLE TRANSMISSION
Title (en)
GEAR FOR A BICYCLE TRANSMISSION
Title (de)
ZAHNRAD FÜR EIN FAHRRADGETRIEBE
Title (fr)
ROUE DENTÉE POUR TRANSMISSION DE BICYCLETTE
Publication
Application
Priority
- DE 102016112132 A 20160701
- DE 202016103538 U 20160701
- EP 2017066379 W 20170630
Abstract (en)
[origin: WO2018002361A1] A gear (10) for a bicycle transmission (20) is described, having an external contour (11) with teeth (12a, 12b) formed thereon, wherein the external contour (11) is defined by a maximum pitch diameter (∅max) and a minimum pitch diameter (∅min), does not have any axes of symmetry and is formed exclusively with point symmetry with respect to its centre of symmetry (M). The invention was therefore based on the problem of developing a gear (10) which improves the pedalling feel of a bicycle transmission (20). The problem is solved in that the external contour (11) exhibits a change in its curvature at every point.
IPC 8 full level
CPC (source: EP KR US)
B62M 1/36 (2013.01 - US); B62M 3/00 (2013.01 - US); B62M 9/00 (2013.01 - US); B62M 9/08 (2013.01 - EP KR US); B62M 11/02 (2013.01 - US); B62M 11/145 (2013.01 - EP KR US); F16H 1/46 (2013.01 - KR US); F16H 35/00 (2013.01 - US); F16H 55/30 (2013.01 - KR US); B62M 2003/006 (2013.01 - US); B62M 2009/002 (2013.01 - EP KR US); F16H 2035/003 (2013.01 - US)
Citation (search report)
See references of WO 2018002361A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2018002361 A1 20180104; AU 2017291265 A1 20190221; CA 3029557 A1 20180104; CN 110062732 A 20190726; CN 110062732 B 20210427; EP 3478562 A1 20190508; JP 2019524528 A 20190905; KR 20190089840 A 20190731; US 10689064 B2 20200623; US 2019225300 A1 20190725
DOCDB simple family (application)
EP 2017066379 W 20170630; AU 2017291265 A 20170630; CA 3029557 A 20170630; CN 201780053907 A 20170630; EP 17737522 A 20170630; JP 2018566927 A 20170630; KR 20197003371 A 20170630; US 201716311824 A 20170630