Global Patent Index - EP 0467673 A3

EP 0467673 A3 19930310 - ELEVATOR ACTIVE SUSPENSION SYSTEM

Title (en)

ELEVATOR ACTIVE SUSPENSION SYSTEM

Publication

EP 0467673 A3 19930310 (EN)

Application

EP 91306517 A 19910718

Priority

  • US 55513090 A 19900718
  • US 55513190 A 19900718
  • US 55513290 A 19900718
  • US 55513390 A 19900718
  • US 55513590 A 19900718
  • US 55514090 A 19900718
  • US 73118591 A 19910716

Abstract (en)

[origin: EP0467673A2] A method and apparatus for actively counteracting a disturbing force (14) acting horizontally on a platform (10) moving vertically in a hoistway is disclosed. A manifestation of the disturbing force (10) such as acceleration is sensed (16) and counteracted (26), for example, by effectively adding mass to the platform (10) in proportion to the magnitude of the sensed signal (18). The frequency of the sensed signal (18) may be taken into account. Rotational disturbances or horizontal components or manifestations thereof may also be counteracted. These may be accomplished by using an electromagnetic actuator or spring/solenoid activated wheels (24) for actuating the platform (10) in response to a control signal from a control means (20) which is in turn responsive to the sensed signal (18). Regardless of the actuator (24) selected, it may be used as well to bring the platform (10) to rest with respect to a hoistway sill prior to transferring passengers. The control means (20) may be analog or digital or a combination of both. A preferred analog-digital approach is disclosed in which the digital part is responsive to accelerometer signals, the analog part is responsive to a force command signal from the digital part and provides a position feedback signal in return. In a preferred embodiment, four electromagnetic actuators or two opposed wheel clusters are situated near the bottom of the platform (10). Each electromagnetic actuator may act along a line which intersects the walls of the car at a forty-five degree angle. A single axis embodiment is also disclosed. A plural-bladed rail is also disclosed. <IMAGE>

IPC 1-7

B66B 11/02; B66B 1/44

IPC 8 full level

B66B 7/02 (2006.01); B66B 7/04 (2006.01); B66B 11/02 (2006.01)

CPC (source: EP)

B66B 7/022 (2013.01); B66B 7/042 (2013.01); B66B 7/046 (2013.01); B66B 11/0286 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0467673 A2 19920122; EP 0467673 A3 19930310; EP 0467673 B1 19971001; DE 69127786 D1 19971106; DE 69127786 T2 19980115; HK 1004914 A1 19981211; SG 92600 A1 20021119

DOCDB simple family (application)

EP 91306517 A 19910718; DE 69127786 T 19910718; HK 98100575 A 19980122; SG 1996005678 A 19910718