Title:
破砕装置および工具
Document Type and Number:
Japanese Patent JP4011880
Kind Code:
B2
Abstract:
A breaking apparatus, which comprises a percussion device (1), and in the extension thereof, a tool (3) to which a percussion piston (2) belonging to a percussion device delivers impacts. In the axial direction, the movement of the tool is limited by means of a stopper element (15) if the movement of the tool exceeds a predetermined range of movement (B) in the direction of the impact (A). The stopper element (15) is a piece made of elastic material, which is arranged in a space between the tool and a supporting surface (16). During the stopping of the tool, the capacity of the space for the stopper element reduces, whereby the element is subjected to pressing. By the effect of the tool movement, the stopper element thus rotates about its cross-sectional central axis (21) and at the same time changes its cross-sectional shape in the reducing space. The invention further relates to a tool used in the above-described breaking apparatus.
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Inventors:
Yuha Intonen
Ossi Kahala
Spear Corqueira
Ilkka Niemi
Timo Ships
Ossi Kahala
Spear Corqueira
Ilkka Niemi
Timo Ships
Application Number:
JP2001311330A
Publication Date:
November 21, 2007
Filing Date:
October 09, 2001
Export Citation:
Assignee:
SANDVIK TAMROCK OY
International Classes:
B25D17/24; B02C1/00; B25D9/04; B25D17/00; E21B10/36
Domestic Patent References:
| JP10202553A | ||||
| JP8229851A | ||||
| JP57110190U | ||||
| JP1240278A | ||||
| JP61148580U | ||||
| JP1066988U |
Foreign References:
| US4336848 |
Attorney, Agent or Firm:
Takao Katori