Title:
NOISE REDUCTION DEVICE OF IMPACT DRIVER
Document Type and Number:
Japanese Patent JPH0828170
Kind Code:
A
Abstract:
PURPOSE: To eliminate a large scale facility for movement of an enclosure and to make it possible for a worker of a stroking apparatus to carry out opening and closing work of the enclosure.
CONSTITUTION: An outer enclosure 17 and an inner enclosure 19 are supported on a vehicle 16, a facility for movement of the enclosures to reduce noise is eliminated, constraint of a jobsite is reduced and facility cost is reduced. Opening and closing of the enclosures are carried out by moving the enclosure 19 by operating an operation lever of a switch valve on a control console, working time is shortened, opening and closing work of the enclosures is carried out by a worker operating a drilling machine 11 and a special worker is eliminated.
More Like This:
| WO/2021/072467 | NOISE CONTROL DEVICE |
| JPH04118407 | SOUND-INSULATING PANEL AND SOUNDPROOF WALL FOR CURVED SURFACE |
Inventors:
KAWAMOTO KENJI
SATO MAKOTO
SUDO MITSUO
SATO MAKOTO
SUDO MITSUO
Application Number:
JP16175194A
Publication Date:
January 30, 1996
Filing Date:
July 14, 1994
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
E01F8/00; B60P3/00; E01F8/02; E21B7/02; (IPC1-7): E21B7/02; B60P3/00; E01F8/00; E01F8/02
Attorney, Agent or Firm:
Toshiro Mitsuishi (1 person outside)
Next Patent: 回路しや断器