EP 0370280 B1 19920115 - DEVICE FOR DEMOLISHING CHIMNEYS
Title (en)
DEVICE FOR DEMOLISHING CHIMNEYS
Publication
Application
Priority
DE 3839677 A 19881124
Abstract (en)
[origin: US4955457A] An arrangement for the demolition of smokestacks includes a demolition tool for successively demolishing the smokestack shaft. A work platform is suspended from the smokestack wall by suspension devices distributed over the circumference of the work platform. Each suspension device includes at least one vertically guided lowering piston which can be locked in different vertical positions. A suspension arm is mounted at the upper end of each piston and can be swung inwardly and outwardly. In the outwardly swung position, the suspension arm engages over the smokestack wall. A mechanical shovel with the demolition tool works on the work platform. The demolition is carried out in the area of a suspension arm which is swung inwardly. After the demolition work has been carried out, the suspension arm is again moved to the outwardly swung position. This is repeated with all suspension arms until the work platform can be lowered by the stroke of the lowering piston and a new demolition cycle can begin.
IPC 1-7
IPC 8 full level
E04H 12/28 (2006.01); E04G 23/08 (2006.01)
CPC (source: EP US)
E04G 23/08 (2013.01 - EP US); E04G 2023/087 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE FR GB IT NL
DOCDB simple family (publication)
EP 0370280 A1 19900530; EP 0370280 B1 19920115; AT E71690 T1 19920215; DE 3839677 A1 19900531; DE 3839677 C2 19920305; JP H02243878 A 19900927; JP H06105013 B2 19941221; US 4955457 A 19900911
DOCDB simple family (application)
EP 89120240 A 19891101; AT 89120240 T 19891101; DE 3839677 A 19881124; JP 30229389 A 19891122; US 44090089 A 19891122