(19)
(11) EP 0 950 772 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
15.03.2000 Bulletin 2000/11

(43) Date of publication A2:
20.10.1999 Bulletin 1999/42

(21) Application number: 99302798.6

(22) Date of filing: 09.04.1999
(51) International Patent Classification (IPC)7E03F 5/02
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 09.04.1998 GB 9807895

(71) Applicant: HEPWORTH BUILDING PRODUCTS LIMITED
Sheffield S36 4HG (GB)

(72) Inventors:
  • Ellam, Peter G.
    Shepley, Huddersfield HD8 8BB (GB)
  • Brook, Alan
    HuddersfieldHD 7 1TE (GB)

(74) Representative: Mounteney, Simon James 
MARKS & CLERK, 57-60 Lincoln's Inn Fields
London WC2A 3LS
London WC2A 3LS (GB)

   


(54) Branch connection


(57) A branch connection suitable for use in a manhole, an access chamber, a gully or a pipe junction. A main channel (2) of the connection communicates with a branch channel (8). The branch channel (8) is declivitous and has a cross-sectional shape that varies along its length. This reduce turbulence, back-flow and ponding. In another aspect, the main channel (2) is declivitous and is provided with a gradient greater than a feed pipe, to counteract decelerating effects upon fluid flow resulting from differences in diameter between the feed pipe and the main channel (2). In another aspect, the main channel is provided with an accelerating weir in a region where the branch channel (8) joins the main channel (2).







Search report