(19)
(11) EP 1 277 884 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
10.12.2003 Bulletin 2003/50

(43) Date of publication A2:
22.01.2003 Bulletin 2003/04

(21) Application number: 02253242.8

(22) Date of filing: 09.05.2002
(51) International Patent Classification (IPC)7: E01F 13/04, E01F 9/019
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 19.07.2001 GB 0117626

(71) Applicant: Baker, Joseph Peter William
Ascot, Berkshire SL5 7PF (GB)

(72) Inventor:
  • Baker, Joseph Peter William
    Ascot, Berkshire SL5 7PF (GB)

(74) Representative: Eder, Ephry 
E. EDER & CO. 39 Cranbrook Road
Ilford, Essex IG1 4PA
Ilford, Essex IG1 4PA (GB)

   


(54) Retractable barriers


(57) A retractable throughway barrier (10) comprising a casing (12) to be embedded in the ground, and a hollow bollard (20) to be expelled outwardly of or retracted inwardly of the casing (12). The hollow bollard (20) is provided with a member (21) susceptible to magnetisation and provided with an upstanding surface. Guide means (15) are provided between the casing (12) and the bollard (20) to guide the bollard (20) during its aforesaid motions. Drive means (22) is provided within the hollow bollard (20) to move the bollard (20) as aforesaid, said drive means (22) including a magnetic body (45) magnetically coupled to the said member (21) and having a surface in rolling contact with said upstanding surface.






Search report