EP 0393094 B1 19910807 - TELESCOPIC WELL OR COLUMN PIPE
Title (en)
TELESCOPIC WELL OR COLUMN PIPE
Publication
Application
Priority
SE 8704544 A 19871119
Abstract (en)
[origin: WO8904895A1] Telescopic well or column pipe comprising an outer tube and an insert tube (B) axially displaceable therein, and a covering which receives in a socket (12) thereof the upper end of the insert tube. Between the socket and the insert tube there is provided as an axially locking rotary mounting an extruded rib (18) having round cross section and smooth surface and consisting of a plastic material having good bearing properties, said rib being received in an annular groove (15, 16) which is located partly in the curved surface of the socket and partly in the curved surface of the insert tube, said groove being available for the insertion of the rib through a passage (17) joining the annular groove substantially tangentially and opening at the outside or the inside of the socket of the insert tube. The insert tube engages at the upper end surface (14) thereof an annular shoulder surface (13) on the covering.
IPC 1-7
IPC 8 full level
E02D 29/12 (2006.01); E02D 29/14 (2006.01); E03F 5/02 (2006.01)
IPC 8 main group level
CPC (source: EP)
E02D 29/12 (2013.01); E02D 29/1409 (2013.01); E03F 5/02 (2013.01); E03F 5/024 (2013.01)
Citation (examination)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
WO 8904895 A1 19890601; AT E66034 T1 19910815; AU 2729188 A 19890614; DE 3864146 D1 19910912; DK 122790 A 19900517; DK 122790 D0 19900517; DK 167542 B1 19931115; EP 0393094 A1 19901024; EP 0393094 B1 19910807; FI 86569 B 19920529; FI 86569 C 19920910; FI 902460 A0 19900518; NO 165884 B 19910114; NO 165884 C 19910502; NO 902201 D0 19900518; NO 902201 L 19900628; SE 459592 B 19890717; SE 8704544 D0 19871119; SE 8704544 L 19890520
DOCDB simple family (application)
SE 8800627 W 19881118; AT 88910170 T 19881118; AU 2729188 A 19881118; DE 3864146 T 19881118; DK 122790 A 19900517; EP 88910170 A 19881118; FI 902460 A 19900518; NO 902201 A 19900518; SE 8704544 A 19871119