Title:
油圧ハンマ
Document Type and Number:
Japanese Patent JP4795698
Kind Code:
B2
Abstract:
The invention relates to a hydraulic hammer comprising a percussion piston (12) for delivering strokes to a tool (8). The lower part of the percussion piston is sealed to the frame (9) by means of a sealing bushing (31) comprising one or more lower seals (15). The sealing bushing does not contribute to the bearing of the percussion piston and it is arranged in place through the lower end of the hydraulic hammer (1). Further, the invention relates to a tool bushing (28) into which the sealing bushing (31) is integrated.
Inventors:
Arbo Full Skynen
Esco Yubonen
Esco Yubonen
Application Number:
JP2005026121A
Publication Date:
October 19, 2011
Filing Date:
February 02, 2005
Export Citation:
Assignee:
SANDVIK MINING AND CONSTRUCTION OY
International Classes:
B25D9/00; B25D9/02; B25D9/04; B25D9/06; B25D9/14; B25D9/18; E02B3/16
Domestic Patent References:
| JP55156885U | ||||
| JP57151489U | ||||
| JP6229278U | ||||
| JP166988U | ||||
| JP8141939A |
Foreign References:
| US5893419 |
Attorney, Agent or Firm:
Takao Katori