B - Operations – Transporting – 25 – D
Patent
B - Operations, Transporting
25
D
255/49
B25D 17/26 (2006.01) B25D 17/08 (2006.01)
Patent
CA 1195684
Abstract of the Disclosure A lubrication system for a drill rod shank in a percussion drilling machine, said drilling machine com- prising a frame (1), a rotating sleeve (2) rotatably mounted in the frame and provided with a housing (5) for the shank (7) of the drill rod (6a, 6b), a tooth ring (10) in the sleeve in axially slideable and rota- ting engagement with a tooth ring (11) in the shank, rotating means (4) for rotating the sleeve around the axis of its tooth ring, and percussion means (9) for applying axial percussions on the drill rod shank. The drilling machine comprises a lubricant supply channel system (14-17) terminating in that flank of each tooth of the tooth ring (10) of the sleeve which is located forward in the direction of rotation of the sleeve for conducting lubricant under pressure between those flanks of the teeth of the tooth rings (10, 11) which are in pairs pressed against each other when the sleeve rotates the drill rod shank. (Fig. 1)
426440
Muuttonen Timo
Salmi Pekka
Wisakanto Risto
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Oy Tempella Ab
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