EP 0014776 B1 19820120 - ROCK CUTTER JIB
Title (en)
ROCK CUTTER JIB
Publication
Application
Priority
EP 79200090 A 19790222
Abstract (en)
[origin: EP0014776A1] 1. A cutting arm for a rock cutting apparatus, comprising a frame structure (1) bordered by longitudinal members (2, 3), at the ends of which there are respectively mounted a drive wheel (17) and a return wheel (26) of an endless member (37) which externally carries cutting members (40) and which internally carries guide shoes (38) slidable in a groove (10), characterized in that the endless member comprises a belt (37) which internally carries guide shoes (38), each of which comprises a block extending over the entire width of said groove (10), the bottom (9 and 16) of which has injectors (11) for supplying a fluid which is spread out therein by the shoes (38) in movement thereof to form a layer of fluid which completely covers said groove (10), for permitting sliding movement of the shoes on said layer of fluid.
IPC 1-7
IPC 8 full level
B27B 17/12 (2006.01); B28D 1/08 (2006.01); E21C 25/28 (2006.01); E21C 35/00 (2006.01)
CPC (source: EP)
B27B 17/12 (2013.01); B28D 1/082 (2013.01); E21C 25/28 (2013.01); E21C 35/00 (2013.01)
Designated contracting state (EPC)
BE CH DE FR GB IT LU NL SE
DOCDB simple family (publication)
EP 0014776 A1 19800903; EP 0014776 B1 19820120; DE 2961849 D1 19820304
DOCDB simple family (application)
EP 79200090 A 19790222; DE 2961849 T 19790222