Global Patent Index - EP 1062721 A1

EP 1062721 A1 2000-12-27 - ACTUATOR HAVING IMPROVED ACCURACY

Title (en)

ACTUATOR HAVING IMPROVED ACCURACY

Title (de)

BETÄTIGUNGSVORRICHTUNG MIT VERBESSERTER GENAUIGKEIT

Title (fr)

ACTIONNEUR A PRECISION RENFORCEE

Publication

EP 1062721 A1 (EN)

Application

EP 99910863 A

Priority

  • NL 9900139 W
  • NL 1008593 A

Abstract (en)

[origin: WO9946847A1] An actuator comprises a housing (1, 10), a motor, an actuating member and a screw mechanism providing a linear movement of the actuating member with respect to the housing (1, 10) in response to a rotational movement of the motor, said screw mechanism comprising a screw (5, 16) and a nut (1, 17) at least one of which is rotatably supported with respect to the housing (1, 10) by means of a rolling element bearing (2, 11), said rolling element bearing (2, 11) having an inner raceway (6) and an outer raceway (6), as well as rolling elements which are in rolling contact with said raceways. At least one of the components of the screw mechanism, e.g. the screw (5, 16), nut (1, 17) or rollers (4, 16) and/or at least a component of the bearing (2, 11), e.g. the inner bearing ring or the outer bearing ring, comprises a surface part which is manufactured by means of a hard cutting operation, e.g. hard turning, hard milling, hard drilling, etc.

IPC 1-7 (main, further and additional classification)

H02K 7/06

IPC 8 full level (invention and additional information)

F16H 25/20 (2006.01); F16D 65/14 (2006.01); F16D 65/18 (2006.01); H02K 7/06 (2006.01)

CPC (invention and additional information)

H02K 7/06 (2013.01); F16D 65/18 (2013.01); F16D 2121/24 (2013.01); F16D 2125/40 (2013.01); F16D 2125/52 (2013.01); F16H 25/2252 (2013.01)

Citation (search report)

See references of WO 9946847A1

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

WO 9946847 A1 19990916; AU 2962999 A 19990927; CN 1296660 A 20010523; EP 1062721 A1 20001227; JP 2002506954 A 20020305; NL 1008593 C2 19990914

INPADOC legal status


2005-05-18 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20041111

2004-09-15 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20040630

2000-12-27 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000911

2000-12-27 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT