(19)
(11) EP 0 678 471 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.02.1996 Bulletin 1996/07

(43) Date of publication A2:
25.10.1995 Bulletin 1995/43

(21) Application number: 95302589.7

(22) Date of filing: 19.04.1995
(51) International Patent Classification (IPC)6: B66B 11/04
(84) Designated Contracting States:
DE FR GB

(30) Priority: 21.04.1994 JP 82828/94

(71) Applicant: KABUSHIKI KAISHA TOSHIBA
Kawasaki-shi, Kanagawa-ken 210 (JP)

(72) Inventor:
  • Nakagawa, Toshiaki, c/o Intellectual Property Div.
    Minato-ku, Tokyo (JP)

(74) Representative: BATCHELLOR, KIRK & CO. 
2 Pear Tree Court Farringdon Road
London EC1R 0DS
London EC1R 0DS (GB)


(56) References cited: : 
   
       


    (54) Linear motor elevator


    (57) A linear motor elevator driven by a linear motor and elevated up and down in a hoistway, including a cage, a counterweight, and a hoisting mechanism having two ends by and from which the cage and the counterweight are respectively suspended so as to be alternatingly elevated up and down in the hoistway. the linear motor elevator further includes a secondary conductor pillar secured in the hoistway and a stator member secured to eight one of the cage and the counterweight at a position surrounding a portion of the secondary conductor pillar with a small gap therebetween. The stator member is composed of a plurality of tubular stators vertically linked and constituting a primary conductor of the linear motor. The linear motor elevator also includes a guide member secured to the stator member at the top and bottom thereof for guiding the elevation of the stator member in the hoistway and maintaining the gap. The linear motor is composed of the stator member and the secondary conductor pillar, and the cage and the counterweight are elevated up and down by an electromagnetic force acting between the stator member and the secondary conductor pillar.






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