EP 2317144 A3 20121226 - Gear for an hydraulic gear machine
Title (en)
Gear for an hydraulic gear machine
Title (de)
Zahnrad für eine hydraulische Zahnradpumpe
Title (fr)
Rue dentée pour une pompe à engrenages hydraulique
Publication
Application
Priority
IT BO20090714 A 20091030
Abstract (en)
[origin: EP2317144A2] A hydraulic gear apparatus comprises a pair of gears which mesh with each other with semi-encapsulation. Each gear has a plurality of teeth having a profile which falls within a tolerance band of ± 1/15, more preferably ± 1/20, and even more preferably ± 1/30 with respect to the height of the tooth, with respect to a profile homothetic to a profile defined by a predetermined spline function passing through a plurality of node points having predetermined coordinates {X,Y} with their origin on the axis of rotation.
IPC 8 full level
F04C 2/14 (2006.01)
CPC (source: EP US)
F04C 2/084 (2013.01 - EP US); F04C 2/14 (2013.01 - EP US)
Citation (search report)
No Search
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)
EP 2317144 A2 20110504; EP 2317144 A3 20121226; BR PI1003887 A2 20120612; CN 102052447 A 20110511; CN 102052447 B 20170412; IT 1398817 B1 20130321; IT BO20090714 A1 20110430; TW 201124653 A 20110716; US 2011103993 A1 20110505
DOCDB simple family (application)
EP 10189404 A 20101029; BR PI1003887 A 20101029; CN 201010526348 A 20101101; IT BO20090714 A 20091030; TW 99137193 A 20101029; US 91478010 A 20101028