EP 0341394 B1 19921209 - DEVICE FOR ENLARGING A CHIMNEY WHICH IS TO BE LINED AT THE INTERIOR BY MILLING AND APPLICATIONS
Title (en)
DEVICE FOR ENLARGING A CHIMNEY WHICH IS TO BE LINED AT THE INTERIOR BY MILLING AND APPLICATIONS
Publication
Application
Priority
DE 3808376 A 19880312
Abstract (en)
[origin: WO8908802A2] A device for grinding a chimney to be lined comprises a grinding cutter (16) which can be raised and lowered, together with its drive motor, in the open cross-section of the chimney. The drive motor is a fluid motor (12) supplied via a fluid hose (14) by a fluid source (10) located outside the chimney (2). Also described is a process for grinding the chimney to be lined using a grinding cutter (16) which can be lowered through the open cross-section of the chimney prior to grinding and whose effective cross-section expands radially as cutting proceeds axially outward. As the grinding cutter (16) is lowered through the open cross-section of the chimney to be lined prior to grinding, the drive motor (12) is entrained through said cross-section together with said cutter.
IPC 1-7
IPC 8 full level
B08B 1/04 (2006.01); B08B 7/02 (2006.01); B08B 9/02 (2006.01); B08B 9/043 (2006.01); B28D 1/18 (2006.01); F23J 3/02 (2006.01)
CPC (source: EP US)
B08B 9/051 (2013.01 - EP US); B28D 1/18 (2013.01 - EP US); B28D 1/181 (2013.01 - EP US); F23J 3/026 (2013.01 - EP US); Y10T 29/4528 (2015.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI LU NL
DOCDB simple family (publication)
WO 8908802 A2 19890921; WO 8908802 A3 19891228; AT E83305 T1 19921215; DE 3808376 A1 19890928; DE 58902935 D1 19930121; DE 8903096 U1 19891026; EP 0341394 A2 19891115; EP 0341394 A3 19900131; EP 0341394 B1 19921209; EP 0341394 B2 19950913; HU 208574 B 19931129; HU 891823 D0 19910429; HU T55898 A 19910628; RU 2071580 C1 19970110; US 5096262 A 19920317
DOCDB simple family (application)
EP 8900265 W 19890313; AT 89104394 T 19890313; DE 3808376 A 19880312; DE 58902935 T 19890313; DE 8903096 U 19890313; EP 89104394 A 19890313; HU 182389 A 19890313; SU 4742558 A 19890313; US 45780490 A 19900112