(19)
(11) EP 0 124 500 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
19.03.1986 Bulletin 1986/12

(43) Date of publication A2:
07.11.1984 Bulletin 1984/45

(21) Application number: 84870047

(22) Date of filing: 29.03.1984
(84) Designated Contracting States:
AT BE CH DE FR GB IT LI LU NL SE

(30) Priority: 31.03.1983 US 480657
31.03.1983 US 480990
31.03.1983 US 481104

(71) Applicant: MONSANTO COMPANY
 ()

(72) Inventors:
  • Dempsey, Barry Joseph
     ()
  • Liu, Keh-Chang
     ()
  • Mantarro, Joseph
     ()

   


(54) Elongated bendable drainage mat


(57) Elongated, bendable drainage mat having a rectangular transverse cross section and comprising a polymeric core having a plurality of substantially rigid fingers extending from one side of a layer and an enveloping water permeable fabric having a permittivity from 0.2 s-1 to 2.0 s-1 and a dynamic permeability after 106 loadings of at least 10-4cm/s.
Apparatus and systems using such drainage mat.






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