Global Patent Index - EP 1093565 A2

EP 1093565 A2 2001-04-25 - A SHORT OPTICAL ENCODER

Title (en)

A SHORT OPTICAL ENCODER

Title (de)

KURZER OPTISCHER KODIERER

Title (fr)

CODEUR OPTIQUE DE FAIBLE LONGUEUR

Publication

EP 1093565 A2 (EN)

Application

EP 99945728 A

Priority

  • SE 9900671 W
  • SE 9801466 A
  • SE 9802136 A
  • SE 9803696 A
  • SE 9900329 A

Abstract (en)

[origin: WO9954683A2] An optical encoder has a rotor part (1604) with an inner end arranged to provide pressure to keep the inner race of a motor shaft bearing axially pressed against a step of shaft bearings, to keep the encoder stator (1607) axially and radially fixed relative to the encoder rotor, and a flat spring (1623) that permits run-out between the encoder stator and a motor rear shield (1612) without causing significant rotational movements between the encoder stator and the motor rear shield. The encoder rotor carries an encoder disc (1603) at its other end, a light illuminating device (1615) in the encoder stator providing light passing axially through the encoder disc and detected by light sensors (1616), this arrangement giving the encoder a small axial length.

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

G01D 1/00

IPC 8 full level (invention and additional information)

G01D 5/347 (2006.01)

CPC (invention and additional information)

G01D 5/3473 (2013.01); G01D 5/34715 (2013.01)

Citation (search report)

See references of WO 9954683A3

Designated contracting state (EPC)

DE ES FR GB IT SE

EPO simple patent family

WO 9954683 A2 19991028; WO 9954683 A3 20000106; AU 4301299 A 19991108; EP 1093565 A2 20010425

INPADOC legal status


2006-05-10 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20051101

2001-04-25 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010201

2001-04-25 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): DE ES FR GB IT SE