(19)
(11) EP 1 319 764 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
17.03.2004 Bulletin 2004/12

(43) Date of publication A2:
18.06.2003 Bulletin 2003/25

(21) Application number: 02425755.2

(22) Date of filing: 09.12.2002
(51) International Patent Classification (IPC)7: E03F 5/04
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR
Designated Extension States:
AL LT LV MK RO

(30) Priority: 10.12.2001 IT RM20010224 U

(71) Applicant: Ghisafon s.n.c. di Adami Giovanni & C.
37135 Verona (IT)

(72) Inventor:
  • Adami, Roberto
    37134 Verona (IT)

(74) Representative: Leone, Mario et al
Società Italiana Brevetti S.p.A. Piazza di Pietra 39
00186 Roma
00186 Roma (IT)

   


(54) Syphon operating sump pit structure for manholes and the like


(57) Syphon operating sump pit structure (4), for effectively preventing outflows of foul odours and exhalations generated in a sewer underlying a manhole, having: a surface grid (3) inserted in a road manhole frame (2); a first vessel (5), supported by said road manhole frame (2) or located therebelow, having a top inlet (6) juxtaposed to the port of the surface grid (3), an open bottom (7) and solid walls (8) which occlude, with the exception of the open bottom (7), the entire manhole section; and a second vessel (9) located below the open bottom (7) of the first vessel (5), having a closed bottom (10) and a top edge (11) located at a level above the open bottom (7), so that the filling up of the second vessel (9) with water or other liquid does not obstruct the flow path of further liquid, concomitantly stemming any exhalation underlying the sump pit structure (4).






Search report