Non-return closure for sewer system ducts

(19)

(11)

EP 1 239 091 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	20.11.2002 Bulletin 2002/47

(43)	Date of publication A2:
	11.09.2002 Bulletin 2002/37

(21)	Application number: 02380051.9

(22)	Date of filing: 05.03.2002

(51)	International Patent Classification (IPC)⁷: E03F 7/04

(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:

05.03.2001 ES 200100504 U

(71)	Applicant: Sanchez Aranega, Pedro
	43480 Vilaseca (Tarragona) (ES)

(72)	Inventor:
	Sanchez Aranega, Pedro 43480 Vilaseca (Tarragona) (ES)

(74)	Representative: Davila Baz, Angel et al
	c/o Clarke, Modet & Co., Goya, 11 28001 Madrid 28001 Madrid (ES)

(54)	Non-return closure for sewer system ducts

(57) Non-return closure for sewer system ducts, that comprises a tubular body (1) of cylindrical general section, finished at one of its ends in a length of square seccion (2) that terminates in an oblique open base (3), on which is monted a cover (4) that is hinged to the innermost non oblique edge (6), in accordance with an axis parallel to said edge, the cover of which covers the whole open base and is provided with lateral skirts (7) that abut on the outside, in the closed position, against the adjacent walls.

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