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    FILTER ELEMENT
    21.
    发明专利
    FILTER ELEMENT 未知

    公开(公告)号：CA2264661A1

    公开(公告)日：1998-03-12

    申请号：CA2264661

    申请日：1997-09-02

    Applicant: FLEISCHHACKER GERHARD

    Inventor： FLEISCHHACKER GERHARD

    IPC: E01C11/22 ,  E03F1/00 ,  E03F5/06 ,  E01C5/00 ,  E01C7/00

    Abstract: A filter element (1) for liquid permeable floor area fastening (17), a floor covering plate (15), a manhole cover (15), a sewage cavity or the like, with at least one pre-filtering layer (3) in the direction of the through-flow (2) and at least one following filter layer (4,4'), wherein the free through-flow sections (a, b, b') of each layer (3, 4, 4') increase from layer to layer in the direction of the through-flow. The filter also comprises a housing (5) which surrounds the filter layers (4,4') in a framelike manner and maintains them, wherein each filter layer (4,4') is formed from granular material and the grains are available in loose form or linked to each other by a weak binding agent.

    Covering for a sewer manhole
    27.
    发明专利
    Covering for a sewer manhole 未知

    公开(公告)号：AU717709B2

    公开(公告)日：2000-03-30

    申请号：AU1916497

    申请日：1997-03-18

    Applicant: FLEISCHHACKER GERHARD

    Inventor： FLEISCHHACKER GERHARD

    IPC: E02D29/14 ,  E03F5/06 ,  E03F5/14 ,  E01C11/22

    Abstract: PCT No. PCT/AT97/00057 Sec. 371 Date Nov. 16, 1998 Sec. 102(e) Date Nov. 16, 1998 PCT Filed Mar. 18, 1997 PCT Pub. No. WO97/35076 PCT Pub. Date Sep. 25, 1997A cover for a sewage shaft comprising a shaft lid (1) including apertures (2) for the passage of sewage, a filtering element (3) spanning the region of the apertures (2) being arranged at the lower side of this lid, wherein the filtering element (3) projects into the apertures (2) and, at its upper side, ends substantially flush with the upper side of the shaft lid (1).

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