Title:
スリーブ装置
Document Type and Number:
Japanese Patent JP4769813
Kind Code:
B2
Abstract:
Sleeve arrangement for a drill rig, especially adapted for damping sound and sealing to the ground, said drill rig comprising a feed beam (4) having a drill end (41) and a rear end (42), said feed beam (4) comprising a first and a second part (411, 412) near the drill end (41), the first part (411) near the drill end (41), the first part (411) being fixed in relation to the feed beam (4), and the second part (412) being movable in relation to the feed beam (4) in a longitudinal direction. The invention is characterized in that said sleeve arrangement comprises a first flexible element (100) attached to the first part (411), and a second flexible element (200) attached to the movable second part (412), such that said first and second flexible elements (100, 200) are movable in relation to each other, wherein said second flexible element (200) is capable of taking an upper and a lower position, as well as all positions therebetween.
Inventors:
Hagrund, Yang
Application Number:
JP2007535633A
Publication Date:
September 07, 2011
Filing Date:
September 27, 2005
Export Citation:
Assignee:
Atlas Copco Rock Drills Activolag
International Classes:
E21B7/02; B25D17/11; E21B15/04; E21B21/00; E21B21/015; E21B
Domestic Patent References:
| JP2002533597A | 2002-10-08 | |||
| JPH08177370A | 1996-07-09 | |||
| JPH08270348A | 1996-10-15 | |||
| JPH0367369U | 1991-07-01 | |||
| JPS62169092A | 1987-07-25 | |||
| JPS6032487A | 1985-02-19 |
Attorney, Agent or Firm:
Takao Hamano
Teruichi Hirai
Teruichi Hirai