(19)
(11) EP 1 795 660 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
12.12.2007 Bulletin 2007/50

(43) Date of publication A2:
13.06.2007 Bulletin 2007/24

(21) Application number: 06125651.7

(22) Date of filing: 07.12.2006
(51) International Patent Classification (IPC): 
E03D 1/14(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK YU

(30) Priority: 09.12.2005 IT MI20052353

(71) Applicant: Oliveira & Irmao S.A.
3800 Aveiro (PT)

(72) Inventors:
  • Moura de Oliveira, Antonio Manuel
    3800-25 Aveiro (PT)
  • Lopes Dias de Figueiredo, Noé
    3800-716 Aveiro (PT)
  • Pacheco Teixeira, Pedro Miguel
    8600-775 Lagos (PT)

(74) Representative: Jorio, Paolo et al
Studio Torta S.r.l. Via Viotti, 9
10121 Torino
10121 Torino (IT)

   


(54) Flush tank drain valve assembly


(57) In a flush tank drain valve assembly (1), in particular a dual-flush drain valve assembly, a supporting structure (2), extending along an axis (A) and including a vessel (6), houses a valve body (3) which slides along the axis (A) and has a shutter (26) cooperating with a fluidtight seat (10); the vessel (6) houses a top float (41) and a bottom float (42), which are located at different heights along the axis (A), and cooperate with the valve body (3); the floats (41, 42) are movable independently of each other with respect to the valve body (3) alongside variations in the water level inside the vessel (6), so as to selectively and independently engage the valve body (3) at different heights along the axis (A).







Search report