Global Patent Index - EP 1614933 B8

EP 1614933 B8 20120502 - HELICALLY TOOTHED-BELT TRANSMISSION DEVICE

Title (en)

HELICALLY TOOTHED-BELT TRANSMISSION DEVICE

Title (de)

ÜBERTRAGUNGSVORRICHTUNG MIT SCHRÄGZAHNRIEMEN

Title (fr)

DISPOSITIF DE TRANSMISSION PAR COURROIE A DENTURE HELICOIDALE

Publication

EP 1614933 B8 (EN)

Application

EP 04725489 A

Priority

  • JP 2004004873 W
  • JP 2003099971 A

Abstract (en)

[origin: EP1614933A1] Noise and vibration of a helically-toothed-belt transmission device driven under heavy load or at a high-speed rotation, are reduced. A backlash "D" is selectively enlarged in a helically-toothed-belt transmission device that transmits drive force by meshing between a helically toothed belt and a helically toothed pulley. That is, a tooth helix angle "¸" is set in a range of -0.2 ‰¤ 1 - W·tan¸ / Pt s 0.75, with "Pt" being a tooth pitch, "¸" a tooth helix angle, and W the width of the belt. The backlash "D" between the helically toothed belt and the helically toothed pulley is set to be 1.6%-3% of the tooth pitch "Pt".

IPC 8 full level

F16H 7/02 (2006.01); F16H 55/38 (2006.01); F16G 1/28 (2006.01); F16H 1/28 (2006.01); F16H 57/12 (2006.01)

CPC (source: EP)

F16H 7/023 (2013.01); F16H 57/12 (2013.01)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 1614933 A1 20060111; EP 1614933 A4 20080611; EP 1614933 B1 20111005; EP 1614933 B8 20120502; AT 527470 T 20111015; CA 2521132 A1 20041021; CA 2521132 C 20090616; CN 100441911 C 20081210; CN 101307815 A 20081119; CN 101307815 B 20100901; CN 1768213 A 20060503; ES 2373718 T3 20120208; JP 2004308702 A 20041104; JP 4010551 B2 20071121; KR 101014695 B1 20110216; KR 20050122202 A 20051228; MX PA05011305 A 20060418; PL 1614933 T3 20120731; US 2007066431 A1 20070322; US 7887446 B2 20110215; WO 2004090380 A1 20041021

DOCDB simple family (application)

EP 04725489 A 20040402; AT 04725489 T 20040402; CA 2521132 A 20040402; CN 200480008550 A 20040402; CN 200810098492 A 20040402; ES 04725489 T 20040402; JP 2003099971 A 20030403; JP 2004004873 W 20040402; KR 20057015544 A 20040402; MX PA05011305 A 20040402; PL 04725489 T 20040402; US 55183504 A 20040402