EP 1167637 A3 20020515 - Trenching apparatus
Title (en)
Trenching apparatus
Title (de)
Grabenbaggervorrichtung
Title (fr)
Excavateur de tranchées
Publication
Application
Priority
GB 0014348 A 20000612
Abstract (en)
[origin: GB2363407A] A trenching unit is used to cut trenches in the seabed for laying pipelines or cables. The unit comprises: a jetting arm 3 with a plurality of sections, each section having at least one nozzle 8; means for supplying fluid to nozzles in at least two sections; and valves 4 for separately controlling the flow characteristics of the fluid supplied to each individual section of the jetting arm. Two or more units of such apparatus can be used in tandem to extend the fluidisation period of a localised area of the seabed. This is particularly useful when pipes or cables are relatively stiff. The fluidisation period depends upon the distance between the units which is calculated as a function of the characteristics of the seabed and the capabilities of the individual units. The distance between the units is determined by the length of an adjustable linkage. Preferably there are two arms 3 which can be moved vertically and horizontally.
IPC 1-7
IPC 8 full level
E02F 3/92 (2006.01); E02F 5/00 (2006.01); E02F 5/10 (2006.01)
CPC (source: EP US)
E02F 3/9206 (2013.01 - EP US); E02F 5/006 (2013.01 - EP US); E02F 5/104 (2013.01 - EP US); E02F 5/107 (2013.01 - EP US)
Citation (search report)
- [A] US 3673808 A 19720704 - VOLBEDA JOHAN H
- [A] US 3659425 A 19720502 - GEETER PIETER J DE
- [A] WO 8002169 A1 19801016 - PRESTEGARDEN M
- [A] GB 1379147 A 19750102 - BROWN & ROOT
- [A] GB 2075085 A 19811111 - HOAD DESIGN & ENG LTD
- [A] US 4330225 A 19820518 - GLASGOW JAMES S
- [A] WO 9528529 A1 19951026 - OORD ACZ B V VAN [NL], et al
- [YA] PATENT ABSTRACTS OF JAPAN vol. 007, no. 159 (M - 228) 13 July 1983 (1983-07-13)
- [YA] PATENT ABSTRACTS OF JAPAN vol. 007, no. 098 (M - 210) 26 April 1983 (1983-04-26)
- [A] PATENT ABSTRACTS OF JAPAN vol. 006, no. 240 (M - 174) 27 November 1982 (1982-11-27)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
GB 0014348 D0 20000802; GB 2363407 A 20011219; EP 1167637 A2 20020102; EP 1167637 A3 20020515; NO 20012823 D0 20010608; NO 20012823 L 20011213; US 2002017041 A1 20020214
DOCDB simple family (application)
GB 0014348 A 20000612; EP 01305068 A 20010611; NO 20012823 A 20010608; US 87840201 A 20010612