There is described a pig suspension system adapted to fit a pig shaft (2) and comprising a plurality of wheels (8) characterised in that the wheels (8) are concentrically mounted and individually connected to a circumferentially acting biasing means.
申请公布号
WO0172439(A1)
申请公布日期
2001.10.04
申请号
WO2001GB01345
申请日期
2001.03.27
申请人
FTL SEALS TECHNOLOGY LIMITED;SMITH, STEVE;SYKES, SIMON
