(19)
(11) EP 0 403 216 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
08.07.1992 Bulletin 1992/28

(43) Date of publication A2:
19.12.1990 Bulletin 1990/51

(21) Application number: 90306372.5

(22) Date of filing: 12.06.1990
(51) International Patent Classification (IPC)5H01H 71/24, H02H 3/33
(84) Designated Contracting States:
BE DE DK ES FR GB IT NL SE

(30) Priority: 14.06.1989 GB 8913633

(71) Applicant: ELECTROLUX OUTDOOR PRODUCTS LIMITED
Newton Aycliffe, Co Durham DL5 6UP (GB)

(72) Inventor:
  • Turner, Colin
    Bishop Auckland, Co. Durham (GB)

(74) Representative: Arthur, Bryan Edward et al
Withers & Rogers 4 Dyer's Buildings Holborn
London EC1N 2JT
London EC1N 2JT (GB)


(56) References cited: : 
   
       


    (54) Electromagnetic actuator arrangement


    (57) An electromagnetic actuator arrangement comprising a switch (SW1) biased open by a biasing spring (SP) and operated by a yoke (Y1) which attracts an armature (AR1) when its winding (L1) is energised is provided with means (C1, SCR1) for instantaneously reversing the magnetising force acting on the armature when the winding (L1) is de-energised. As a result, the residual magnetism in the armature (AR1) is opposed by the reversed magnetic field from the winding (L1) and the tendency of the armature to stick to the yoke is avoided. Consequently the release time is reduced.





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