Title:
BALANCING DEVICE FOR TOOL SUPPORT DEVICE
Document Type and Number:
Japanese Patent JP2003236773
Kind Code:
A
Abstract:
To provide a balancing device for tool support device formed in a simple structure and capable of holding a higher lifting force at a bolt tightening height.
This balancing device for tool support device comprises a parallel link mechanism 21 having a working tool 23 fitted to the tip thereof and having a base end supported rotatably, a compressive elastic body 28 holding the parallel link mechanism 21 always in equilibrium state, and a working force altering mechanism for increasing a working force on the parallel link mechanism 21 by moving the supporting point of the compressive elastic body 28 when the parallel link mechanism 21 having the tool at the tip thereof is displaced from a first position to a second position.
Inventors:
YONEZAWA SHUICHI
Application Number:
JP2002039553A
Publication Date:
August 26, 2003
Filing Date:
February 18, 2002
Export Citation:
Assignee:
ATLAS COPCO KK
International Classes:
B25H3/00; (IPC1-7): B25H3/00
Attorney, Agent or Firm:
Shigeru Yagita (3 outside)